Claims:
1. A system for pressure testing of valves by hydraulic multi valve test bench comprising:
a main manifold (110) configured with plurality of openings (115, 120, 125, 130, 135, 140, 145) wherein said main manifold (110) is rotatable to 360 degrees about an axis (280);
plurality of valves (205, 210, 215, 220, 225, 230, 235) configured to be mounted on said openings (115, 120, 125, 130, 135, 140, 145) of the main manifold (110);
an inlet valve (250) configured to be mounted on an inlet of the main manifold (110) to supply fluid and to control pressure of the said fluid in the main manifold (110);
a vent valve (240) configured for venting an excess pressure of the main manifold (110);
an auxiliary manifold (245) securely mounted on stand (105 a) configured with plurality of sockets (245 b to 245 i) adapted to selectively establish connection to other side of the plurality of valves (205, 210, 215, 220, 225, 230, 235) mounted on the main manifold (100) and for mounting of pressure gauge on the auxiliary manifold (245);
plurality of hoses (260, 260 a to h) adapted to selectively establish connection between the auxiliary manifold (245) and the plurality of valves (205, 210, 215, 220, 225, 230, 235) mounted on the main manifold (110);
an inlet valve (255) configured to be mounted on an inlet of the auxiliary manifold (245) to supply fluid and to control pressure of the said fluid in the auxiliary manifold (245); and
at least one pump (100) configured to selectively supply a pressurised fluid to the main manifold (110) or the auxiliary manifold (245).

2. The system for pressure testing of valves by hydraulic multi valve test bench as claimed in claim 1, wherein the main manifold (110) is configured to be rotatable to 360 degrees about the axis (280) by a handle (185) mounted on a vertical support (105 a) and the main manifold (110) is lockable at four positions by nut and bolt locking arrangement (200 a, 200 b).

3. The system for pressure testing of valves by hydraulic multi valve test bench as claimed in claim 1, wherein the main manifold (110) is configured to be mounted horizontally between two vertical supports (105 a & b).

4. The system for pressure testing of valves by hydraulic multi valve test bench as claimed in claim 1, wherein the plurality of openings (115, 120, 125, 130, 135, 140, 145) are mounted at 90 degrees to the main manifold (110);

5. The system for pressure testing of valves by hydraulic multi valve test bench as claimed in claim 1, wherein the openings (115, 120, 125, 130, 135, 140, 145) are selectively configured to be of varying sizes for mounting valves of variable sizes.

6. The system for pressure testing of valves by hydraulic multi valve test bench as claimed in claim 1, wherein the said openings (115, 120, 125, 130, 135, 140, 145) are configured from pipe and flange assembly adapted for mounting of valves of variable sizes.

7. The system for pressure testing of valves by hydraulic multi valve test bench as claimed in claim 1, wherein the main manifold (110) is configured to test a seat of the valves and the auxiliary manifold (245) is configured to test a body of the valves during testing of non-return valves.

8. The system for pressure testing of valves by hydraulic multi valve test bench as claimed in claim 1, wherein the system is configured with a pressure gauge (265) for monitoring the pressure of the main manifold (110) and a pressure gauge (246) for monitoring the pressure of the auxiliary manifold (245).

9. The system for pressure testing of valves by hydraulic multi valve test bench as claimed in claim 1, wherein the non-return valves are configured to be tested both in flow direction and in return flow direction without dismantling of valves.

10. The system for pressure testing of valves by hydraulic multi valve test bench as claimed in claim 1, wherein the multiple testing valves are configured to be of straight type, angle type, stop valve type and check valve type configured to be tested at a time on a single test bench.

11. A method of pressure testing of valves by hydraulic multi valve test bench comprises steps of:
mounting plurality of valves to be tested on a main manifold (110) of the test bench wherein the normal valves are connected to the main manifold (110) through either left side flange or right side flange and the non-return valves are connected to the main manifold (110) through right side flange;

opening an inlet valve (250) of the main manifold (110) and closing an inlet valve (255) of the auxiliary manifold (245);

pressurising the main manifold (110) to a required pressure through a pump (100);

venting an excess pressure of the main manifold (110) through an air vent valve (240);

checking the valves for leakages in a seat of the valves by monitoring the pressure through a pressure gauge (265);

for body testing of the normal valves, the left and right side opening is closed wherein any one side is closed by the main manifold (110) and the other side is closed by a blind flange to make a close volume and pressurising the valves to the required fluid pressure by the pump (100) through the inlet valve (250) of the main manifold (110);

checking for leakages in the body of the normal valves by monitoring the pressure on the pressure gauge (265);

for body testing of non-return valves without dismantling, the left side flange (for straight type valves)/bottom side flange (for angle type valves) of the valve is connected to an auxiliary manifold (245) by flexible hoses;

closing the inlet valve (250) of the main manifold (110) and opening an inlet valve (255) of the auxiliary manifold (245);

pressurising the valves to the required fluid pressure by the pump (100) through the inlet valve (255) of the auxiliary manifold (245) and the flexible hoses (260 (b to h)); and

checking the valves for leakages in the body of the valves by monitoring the pressure on the pressure gauge (245 a).
, Description:FORM 2

THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003

COMPLETE SPECIFICATION
(See Section 10 and Rule 13)

Title of the invention:
A SYSTEM FOR PRESSURE TESTING OF VALVES BY HYDRAULIC MULTI VALVE TEST BENCH AND METHOD THEREOF

Applicant:
GOA SHIPYARD LIMITED
(A Govt. of India Undertaking-Ministry of Defence)
Having address as:
GOA SHIPYARD LIMITED
Vasco-Da-Gama, GOA - 403802, India

The following specification particularly describes the invention and the manner in which it is to be performed.

TECHNICAL FIELD
[001] The present invention relates to a system and method of pressure testing of valves or pipes using hydraulic multi valve test bench and more particularly relates to a pressure testing jig for testing of valves or pipe-lines or the like.
BACKGROUND
[002] Valves are tested for leakages using a hydrostatic test or a pneumatic test wherein the valves are inspected and tested to ensure conformity of required valve leakage standards. Valves are tested at an operating pressure and temperature ranges specified by a manufacturer in accordance with standards. The testing of valves includes testing of individual components e.g. seat, disc, body, stem etc. In a valve body test, the valve is partially open and be able to hold pressure for a certain time wherein no leakage is allowed. In seat leakage or closure test, one side of the valve (either inlet or outlet) is subjected to a hydrostatic pressure and an amount of leakage is measured on opposite side of the valve.
[003] Conventionally, only one valve can be tested at a time using a test setup wherein the valve is fixed at one place for testing. The said method of testing valves is time consuming which may hamper productivity of the valve testing. Hence, there is a need to develop a method or a system which allows multiple valve testing at a time to enhance the productivity of the valve testing.
OBJECT OF THE INVENTION
[004] It is a main object of the present invention to provide testing of multiple size valves at a time.
[005] It is another object of the present invention to perform seat testing and body testing, without dismantling a valve preferably a non-return valve.
[006] It is another object of the present invention to enhance productivity of valves.
[007] It is another object of the present invention to reduce testing time of valves.
[008] It is another object of the present invention to provide rotation of a valve during testing.

SUMMARY OF INVENTION
[009] Before the present system and method are described, it is to be understood that this application is not limited to the particular machine or apparatus, and methodologies described, as there can be multiple possible embodiments that are not expressly illustrated in the present disclosures. It is also to be understood that the terminology used in the description is for the purpose of describing the particular versions or embodiments only, and is not intended to limit the scope of the present application. This summary is provided to introduce aspects related to a system for multivalve testing. This summary is not intended to identify essential features of the proposed subject matter nor is it intended for use in determining or limiting the scope of the proposed subject matter.
[0010] The present subject matter relates to a system for pressure testing of valves by hydraulic multi valve test bench comprising a main manifold having plurality of openings for mounting of pipes wherein the main manifold is rotatable to 360 degrees about an axis of the main manifold and said openings are mounted at 90 degrees to the main manifold. Further, the plurality of valves to be tested are mounted on said openings of the main manifold. The openings are selectively configured to be of varying sizes for mounting valves of variable sizes and said openings are configured from pipe and flange assembly. Furthermore, an inlet side of the valve is mounted on the main manifold to supply fluid and to control pressure of the said fluid in the main manifold. Furthermore, the main manifold comprises an air vent valve for venting an excess air of the main manifold. Further, the system comprises an auxiliary manifold securely mounted on stand wherein the auxiliary manifold is configured with plurality of sockets adapted to selectively establish connection to other side of the plurality of valves mounted on the main manifold and for mounting of pressure gauge on Auxiliary manifold. Further, the auxiliary manifold comprises an inlet valve mounted to supply fluid and to control pressure of the said fluid in the auxiliary manifold. Furthermore, the system comprises at least one pump configured to selectively supply a pressurised fluid to the main manifold or the auxiliary manifold. The main manifold is mounted horizontally between two vertical supports and rotatable by a handle mounted on said vertical supports wherein, the main manifold is lockable at four positions by nut and bolt locking arrangement. Further, the system comprises separate pressure gauge for monitoring the pressure of the main manifold and for the auxiliary manifold. Preferably, the main manifold is configured to test a seat of the valves and the auxiliary manifold is configured to test a body of the valves during testing of non-return valves wherein the non-return valves are configured to be tested both in flow direction and in return flow direction for seat testing without dismantling of valves.
[0011] Further, a method of pressure testing of valves by hydraulic multi valve test bench comprises steps of : mounting plurality of valves to be tested on a main manifold of the test bench such that right hand side flange (outlet flange) of the non-return valves to be connected to the main manifold, opening an inlet valve of the main manifold and closing an inlet valve of the auxiliary manifold, pressurising the main manifold to a required pressure through a pump, venting an excess pressure of the main manifold through an air vent valve, checking the valves for leakages in a seat of the valves by monitoring the pressure through a pressure gauge. For body testing of the normal valves for example - stop valves or globe valves the left and right side flange is closed wherein any one side is closed by the main manifold and the other side is closed by a blind flange to make a closed volume and pressurising the valves to the required fluid pressure by the pump through the inlet valve of the main manifold, checking for leakages in the body of the normal valves i.e. stop valves and globe valves by monitoring the pressure on the pressure gauge. For body testing of non-return valves without dismantling, the left side flange of the valve is connected to an auxiliary manifold by flexible hoses, closing the inlet valve of the main manifold and opening an inlet valve of the auxiliary manifold, pressurising the valves to the required fluid pressure by the pump through the inlet valve of the auxiliary manifold and the flexible hoses and checking the valves for leakages in the body of the valves by monitoring the pressure on the pressure gauge.
STATEMENT OF INVENTION
[0012] Accordingly, the present invention discloses a system for pressure testing of valves by hydraulic multi valve test bench comprising a main manifold configured with plurality of openings, plurality of valves configured to be mounted on said openings of the main manifold, an inlet valve configured to be mounted on an inlet of the main manifold to supply fluid and to control pressure of the said fluid in the main manifold, an air vent valve configured for venting an excess air of the main manifold, an auxiliary manifold securely mounted on stand configured with plurality of sockets adapted to selectively establish connection to other side of the plurality of valves mounted on the main manifold, an inlet valve configured to be mounted on an inlet of the auxiliary manifold to supply fluid and to control pressure of the said fluid in the auxiliary manifold and at least one pump configured to selectively supply a pressurised fluid to the main manifold or the auxiliary manifold.
[0013] Further, the main manifold is configured to be rotatable to 360 degrees by a handle mounted on a vertical support and the main manifold is lockable at four positions by nut and bolt locking arrangement. The main manifold is configured to be mounted horizontally between two vertical supports. Said plurality of openings of the main manifold are mounted at 90 degrees to the main manifold and are configured from pipe and flange assembly wherein the openings are selectively configured to be of varying sizes for mounting valves of variable sizes. Further, the main manifold is configured to test a seat of the valves and the auxiliary manifold is configured to test a body of the valves during testing of non-return valves wherein the non-return valves are configured to be tested both in flow direction and in return flow direction for seat testing without dismantling of valves. Further, the system is configured with individual pressure gauge for monitoring the pressure of the main manifold and for the auxiliary manifold.
[0014] Moreover, a method of pressure testing of valves by hydraulic multi valve test bench comprises steps of: mounting plurality of valves to be tested on a main manifold of the test bench wherein the normal valves are connected to the main manifold through either left side flange or right side flange and the non-return valves are connected to the main manifold through right side flange, opening an inlet valve of the main manifold and closing an inlet valve of the auxiliary manifold, pressurising the main manifold to a required pressure through a pump, venting an excess pressure of the main manifold through an air vent valve, checking the valves for leakages in a seat of the valves by monitoring the pressure through a pressure gauge. For body testing of the normal valves (Stop valves/globe valves), the left and right side flange is closed wherein any one side is closed by the main manifold and the other side is closed by a blind flange to make a close volume and pressurising the valves to the required fluid pressure by the pump through the inlet valve of the main manifold, checking for leakages in the body of the normal valves (Stop valves/globe valves) by monitoring the pressure on the pressure gauge. For body testing of non-return valves without dismantling : the left side flange of the valve is connected to an auxiliary manifold by flexible hoses, closing the inlet valve of the main manifold and opening an inlet valve of the auxiliary manifold, pressurising the valves to the required fluid pressure by the pump through the inlet valve of the auxiliary manifold and checking the valves for leakages in the body of the valves by monitoring the pressure on the pressure gauge.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The foregoing summary, as well as the following detailed description of embodiments, is better understood when read in conjunction with the appended drawing. For the purpose of illustrating the disclosure, example constructions of the disclosure are shown in the present document, however, the disclosure is not limited to the specific methods and apparatus disclosed in the document and the drawing.
[0016] The detailed description is described with reference to the accompanying figure. In the figure, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawing to refer like features and components.
[0017] Figure 1 illustrates a valve testing system, in accordance with the present invention.
[0018] Figure 2 illustrates a straight type normal valve (Stop valves/globe valves), in accordance with the present invention.
[0019] Figure 3 illustrates a straight type non-return valve, in accordance with the present invention.
[0020] Figure 4 illustrates an angle type normal valve (Stop valves/globe valves), in accordance with the present invention.
[0021] Figure 5 illustrates an angle type non-return valve, in accordance with the present invention.
[0022] The figure depicts various embodiments of the present disclosure for purposes of illustration only. One skilled in the art will readily recognise from the following discussion that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION
[0023] Some embodiments of this disclosure, illustrating all its features, will now be discussed in detail. The words "comprising", “having”, and "including," and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or meant to be limited to only the listed item or items. Although any system and method similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary, systems and methods are now described. The disclosed embodiments are merely exemplary of the disclosure, which may be embodied in various forms.
[0024] Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art will readily recognize that the present disclosure is not intended to be limited to the embodiments illustrated, but is to be accorded the widest scope consistent with the principles and features described herein.
[0025] A system and method of pressure testing of valves using hydraulic multi valve test bench is described. The main object of the invention is to provide a method of pressure testing of multiple valves at a time by using a pressure testing device by internally applying fluid pressure to objects being tested. The further object of the invention is to test the bodies & seats/ sealing surfaces of the multiple valves at a time. Non-return valves can also be tested in both directions i.e., in flow and in return flow direction, for body & seat testing without dismantling the valves, after mounting on the test bench in a particular position. A straight type and angle type normal valves and non-return valves can be tested by the proposed testing device. The normal valves can be mounted in any position on the testing device as the valve opening and closing is controlled by rotating a spindle of the valve whereas the non-return valves have to be mounted at particular position as a fluid pressure is responsible for opening and closing of the valve.
[0026] Referring to figure 1, a valve testing system comprising a test bench is illustrated. The proposed system comprises a main manifold (110) mounted horizontally between two vertical supports (105a & b) wherein the main manifold (110) may have multiple openings for pipes. Further, the main manifold (110) is rotatable to 360 degrees about an axis (280) and is lockable to required position by nut and bolt locking arrangement (200 a, 200 b) wherein the rotation of the main manifold (110) is provided to perform seat testing and body testing of the valve without dismantling the valve. In an embodiment, the main manifold (110) can be locked at 4 positions. Plurality of pipes are configured to be mounted on the main manifold (110) wherein plurality of valves are mounted on the said pipes for testing. In an embodiment, the pipes are configured to be of different size to accommodate different sizes of valves. In an embodiment, the pipes are configured to be seam-less steel pipe with sizes 65 NB, 50 NB, 40 NB, 32 NB, 25 NB, 20 NB, 15 NB. Further, in an embodiment, the said valves are configured to be flange ended valves (205, 210, 215, 220, 225, 230, 235) and rests on plurality of flanges (205 (a), 210 (a), 215 (a), 220 (a), 225 (a), 230 (a), 235 (a)). Furthermore, the system comprises a hydro pump (100) configure to be connected to an inlet valve (250) which may be operated to control/supply a pressure in the main manifold (110). The excess air in the system is vented through an air vent valve (240) and an applied pressure is monitored through a pressure gauge (265). On supplying the pressure to the main manifold, all fitted valves are tested for leakages. Furthermore, the system comprises an auxiliary manifold (245) configured for testing of non-return valves wherein the auxiliary manifold (245) comprises plurality of sockets (b to i) for flexible hoses. For monitoring the pressure of the auxiliary manifold, a pressure gauge (245 a) is provided. Further, the mounted valves are required to be connected to the auxiliary manifold (245) by flexible hoses during testing of the non-return valves on the same setup and without dismantling it. The system comprises an inlet valve (255) for the auxiliary manifold (245) wherein the inlet valve (250) may be closed, and the inlet valve (255) may be opened while testing the body of the non-return valves. Furthermore, the system comprises a handle (185) for rotating the test bench wherein the handle may be supported in a holder (190). Furthermore, the normal valves can be mounted at any direction (+Z, -Z, +Y, -Y) with respect to the main manifold (110) mounted in +X direction and the non-return valves can be mounted in preferably two directions (+Z and –Z which is horizontal plane perpendicular to the main manifold) with respect to the main manifold (110) in order to keep a clack seated on a clack seat properly. After seat testing of the non-return valves, the body testing of the valves is performed without dismantling the valves and by connecting the valves to the auxiliary manifold (245) wherein one side of the non-return valve is connected to the main manifold (110) and other side is connected to the auxiliary manifold (245).
[0027] Referring to figure 2, a straight type normal valve (208) is shown. The said valve (208) mainly comprises a clack (201), a clack seat (202) and a spindle (203) wherein the clack (201) is connected to the spindle (203) through a clack Nut. The spindle (203) may be rotated to close or open the valve (208) by moving the clack (201) up and down. On opening the valve (208), the clack (201) moves up thereby creating gap to allow a fluid to flow from left to right. Further, for seat testing of the valve (208), the valve is mounted on the main manifold (110) such that the left side flange (inlet flange) (206) of the valve (208) is connected to one of the flanges (205 (a), 210 (a), 215 (a), 220 (a), 225 (a), 230 (a), 235 (a)) of the main manifold (110) as per size of the valve (208) and the clack (201) remains seated as shown in figure, further, a predetermined fluid pressure is applied by a hydro pump (100) and a pressure is observed on the pressure gauge for predefined time duration. If the pressure drop occurs, then a leakage in the valve (208) is determined by observing the pressure gauge reading. The leakage if any, can also be determined by observing the right side flange (outlet flange) (207) of the valve. Furthermore, for body testing of the valve (208), the left and right side flanges(206, 207) of the valve are closed to make a close volume, the valve (208) is fully open i.e. the clack (201) is in lifted position and then the valve (208) is pressurised to the predetermined fluid pressure for a predefined time duration and the pressure gauge is observed to check the pressure drop which indicates the leakage in the body of the valve (208). In an embodiment, the valve may be mounted in +Z or -Z direction or +Y direction (perpendicular) with respect to the main manifold (110) which is mounted in X direction.
[0028] Referring to figure 3, a straight type non-return valve (300) is shown. The said valve mainly comprises a clack (301) and a spindle (303) wherein the clack (301) is seated on a clack seat (302). In this type of valve, there is no connection between the spindle (303) and the clack (301) wherein the clack (301) moves up by a fluid pressure only. Hence, for seat testing of such valves, the right side flange (306) of the valve is connected to one of the flanges (205 (a), 210 (a), 215 (a), 220 (a), 225 (a), 230 (a), 235 (a)) of the main manifold (110) as per size of the valve (300) wherein if there is no leakage, the clack (301) and clack seat (302) will not allow the fluid to flow from right to left and the applied fluid pressure keeps the clack (301) seated. In an embodiment, a predetermined fluid pressure is applied by a hydro pump (100) and a pressure is observed on the pressure gauge for predefined time duration. If the pressure drop occurs, then a leakage in the valve is determined by observing the pressure gauge reading. The leakage if any, can also be determined by observing the left side opening (305) of the valve. Furthermore, for body testing of the valve (300), the left side opening (305) of the valve is connected to the auxiliary manifold (245) (with any of the sockets provided 245 (b to h) through flexible hoses wherein the right side opening (306) of the valve is already connected to the main manifold (110). Further, the valve (300) is pressurised to the predetermined fluid pressure for a predefined time duration from the left side opening (305) by opening the valve (255) and closing the valve (250). Furthermore, the pressure gauge (246) is observed to determine the leakage in the body of the valve (300) by observing the pressure drop. In an embodiment, the valve may be mounted on +Z or -Z direction (horizontal plane perpendicular to the main manifold) with respect to the main manifold (110) which is mounted in X direction to provide proper seating of the clack (301) on a clack seat (302).
[0029] Referring to figure 4, an angle type normal valve (400) is shown. The said valve mainly comprises a clack (401), a clack seat (402) and a spindle (403) wherein the clack (401) is connected to the spindle (403) through a clack nut. The spindle (403) is rotated to close or open the valve (400) by moving the clack (401) up and down. On opening the valve (400), the clack (401) moves up thereby creating gap to allow a fluid to flow from bottom side flange (405) to right side flange (406). Further, for seat testing of the valve (400), the valve is mounted on the main manifold (110) such that the bottom side opening (inlet) (405) of the valve is connected to one of the flanges (205 (a), 210 (a), 215 (a), 220 (a), 225 (a), 230 (a), 235 (a)) as per size of the valve and the clack (401) remains seated i.e. the valve is completely closed as shown in figure, then a predetermined fluid pressure is applied by a hydro pump (100) and a pressure is observed on the pressure gauge (265) for predefined time duration. If the pressure drop occurs, a leakage in the valve (400) is determined by observing the pressure gauge reading. The leakage if any, can also be determined by observing the right side flange (outlet flange) (406) of the valve. Furthermore, for body testing of the valve (400), the bottom side flange is mounted on the main manifold and the right side flange(406) of the valve is closed by blind flange to make a close volume, the valve is fully open i.e. the clack (401) is in lifted position and then the valve (400) is pressurised to the predetermined fluid pressure using hydro pump (100) by opening valve (250) and by closing valve (255) for a predefined time duration and the pressure gauge (265) is observed to check the pressure drop which indicates leakage in the body of the valve. In an embodiment, the valve (400) may be mounted in +Z or -Z direction or +Y direction (perpendicular) with respect to the main manifold (110) which is mounted in X direction.
[0030] Referring to figure 5, an angle type non-return valve (500) is shown. The said valve mainly comprises a clack (501), a clack seat (502) and a spindle (503) wherein the clack (501) is seated on a clack seat (502). In this type of valve, there is no connection between the spindle (503) and the clack (501) wherein the clack (501) moves up by the fluid pressure only. Hence, for seat testing of such valves, the right side flange (506) of the valve is connected to one of the flanges (205 (a), 210 (a), 215 (a), 220 (a), 225 (a), 230 (a), 235 (a)) of the main manifold (110) as per size of the valve wherein if there is no leakage, the clack (501) and the clack seat (502) will not allow the fluid to flow from right (506) to bottom (505) and the applied fluid pressure from the right side of the valve keeps the clack (501) seated. In an embodiment, a predetermined fluid pressure is applied by a hydro pump (100) by opening valve (250) and by closing valve (255) and a pressure is observed on the pressure gauge (265) for predefined time duration. If the pressure drop occurs, then a leakage in the valve (500) is determined by observing the pressure gauge reading. The leakage if any, can also be determined by observing the bottom side opening (505) of the valve. In an embodiment, the valve (400) may be mounted in +Z or -Z direction with respect to the main manifold (110) which is mounted in X direction. Furthermore, for body testing of the valve (500), the bottom side opening (505) of the valve is connected to the auxiliary manifold (245) (with any of the sockets provided 245 (b to h) through flexible hoses wherein the right side opening (506) of the valve is already connected to the main manifold (110). Further, the valve (500) is pressurised to the predetermined fluid pressure for a predefined time duration through the bottom side opening (505) by opening the valve (255) and closing the valve (250). Furthermore, the pressure gauge (246) is observed to determine the leakage in the body of the valve by observing the pressure drop. In an embodiment, the valve may be mounted on +Z or -Z direction (horizontal plane perpendicular to the main manifold) with respect to the main manifold (110) which is mounted in X direction, to provide proper seating of the clack (501) on the clack seat (502).
[0031] Exemplary embodiments discussed above may provide certain advantages. Though not required to practice aspects of the disclosure, these advantages may include those provided by the following features.
• The present invention reduces a time required for testing of multiple valves.
• The present invention provides rotation of a main manifold about its axis and hence with the help of one test bench, different types of valves can be tested including angle type and straight type valves.
• The present invention provides testing of non-return valves in flow direction and in reverse flow direction without dismantling the valve by using an auxiliary manifold which saves a lot of time in testing of non-return valves.
• The present invention provides air vent arrangement for venting of excess air present inside the manifold.
• The present invention provides pressure monitoring arrangement for sensing any pressure change in a system.
[0032] Following is the list of reference numerals referred in the present invention.

Reference Numerals Part Name
100 Hydro pump
105 (a & b) Vertical Support for valve testing bench.
110 Main Manifold
115 Branch pipe with flange– Size: 65 NB – ASTM 40 Seam-less steel pipe.
120 Branch pipe with flange – Size: 50 NB – ASTM 40 Seam-less steel pipe
125 Branch pipe with flange – Size: 40 NB – ASTM 40 Seam-less steel pipe
130 Branch pipe with flange – Size: 32 NB – ASTM 40 Seam-less steel pipe
135 Branch pipe with flange – Size: 25 NB – ASTM 40 Seam-less steel pipe
140 Branch pipe with flange – Size: 20 NB – ASTM 40 Seam-less steel pipe
145 Branch pipe with flange – Size: 15 NB – ASTM 40 Seam-less steel pipe
185 Handle for rotating the Multi valve test bench
190 Holder for placing the handle
195 Base of the Multi valve test bench
200 Rotating & locking arrangement of Main manifold
200 (a & b) Nut & bolts for locking arrangement of Main manifold
205 65 NB flange ended valve (DIN ND 10 STD)
205 (a) 65 NB flange with hose connection
210 50 NB flange ended valve (DIN ND 10 STD)
210 (a) 50 NB flange with hose connection.
215 40 NB flange ended valve (DIN ND 10 STD).
215 (a) 40 NB flange with hose connection
220 32 NB flange ended valve (DIN ND 10 STD).
220 (a) 32 NB flange with hose connection
225 25 NB flange ended valve (DIN ND 10 STD).
225 (a) 25 NB flange with hose connection
230 20 NB flange ended valve (DIN ND 10 STD).
230 (a) 20 NB flange with hose connection
235 15 NB flange ended valve (DIN ND 10 STD).
235 (a) 15 NB flange with hose connection
240 Air vent valve
245 Auxiliary Manifold
245 (a to i) Sockets for auxiliary Manifold
246 Pressure gauge for auxiliary Manifold
250 Inlet valve for Main manifold
255 Inlet valve for Auxiliary Manifold
260 Flexible hose
260 (a to h) Flexible hoses for auxiliary manifold connection
265 Pressure gauge for main manifold
270 Isolation valve for pressure gauge
280 Axis of rotation of manifold