WE CLAIM:
[Claim 1]
A composite valve that is attached to a port of a fluid pressure apparatus, the composite valve comprising:
a valve body!
a first valve module attached to the valve body; and
a second valve module attached to the valve body,
wherein the valve body includes a first body portion having an attachment hole that is used for attaching the first valve module to the first body portion, a second body portion having an attachment hole that is used for attaching the second valve module to the second body portion, a third body portion having an input port that is used for injecting a pressure fluid into the third body portion, and a fourth body portion having an output port that is used for outputting the pressure fluid, the first body portion, the second body portion, the third body portion, and the fourth body portion being formed in such a manner as to be integrally coupled to one another,
wherein the fourth body portion includes an attachment portion that is formed in such a manner as to be directly screwed into and attached to a port of a fluid pressure apparatus, the port having a shape of a threaded hole,
wherein the first body portion and the second body portion respectively extend along a first axis and a second axis that are parallel to each other,
wherein the third body portion is located in a plane including either or both of the first axis and the second axis, or is located in a separate plane that is parallel to the plane and extends along a third axis that is at 90 degrees with respect to the first axis and with respect to the second axis,
wherein the fourth body portion extends along a fourth axis that is at 90 degrees with respect to all the first axis, the second axis, and the third axis,
wherein the first valve module includes a module body that is attachable

to the first body portion by being inserted into the attachment hole of the first body portion and a valve mechanism that is assembled to the module body, and the second valve module includes a module body that is attachable to the second body portion by being inserted into the attachment hole of the second body portion and a valve mechanism that is assembled to the module body,
wherein the first valve module and the second valve module have different fluid control functions, and
wherein a fluid flow path that allows the input port and the output port to communicate with each other is formed in such a manner as to extend from the third body portion to the fourth body portion by sequentially passing through the first body portion, the first valve module, the second body portion, and the second valve module from one side to another side. [Claim 2]
The composite valve according to Claim 1,
wherein the first body portion, the second body portion, the third body portion, and the fourth body portion each have a hollow cylindrical shape,
wherein the first body portion and the second body portion are disposed at positions that are adjacent to each other in such a manner that the first body portion and the second body portion overlap each other, and
wherein a first attachment hole of the first body portion and a second attachment hole of the second body portion are open along the first axis and the second axis, respectively, and are oriented in opposite directions. [Claim 3]
The composite valve according to Claim 1,
wherein the third body portion and the fourth body portion are disposed at positions located on opposite sides with the first body portion or the second body portion interposed between the third body portion and the fourth body portion. [Claim 4]

The composite valve according to Claim 1,
wherein the first body portion, the second body portion, and the third body portion are arranged in such a manner that the entire first body portion, the entire second body portion, and the entire third body portion are fit into an area having a height of the fourth body portion. [Claim 5]
The composite valve according to Claim 1,
wherein the fourth body portion includes a hollow outer body and an inner body that has a cylindrical shape and that is accommodated in the outer body in such a manner as to be rotatable about the fourth axis,
wherein an upper end of the inner body is exposed to the outside from an upper end of the outer body, and a lower end of the inner body projects outward from a lower end of the outer body,
wherein an output hole is formed in the inner body, and an attachment portion and an output port are formed at a lower end portion of the inner body, and
wherein an operation portion that is used for performing a turning operation by using a wrench is formed at an upper end portion of the inner body [Claim 6]
The composite valve according to Claim 1,
wherein the first valve module and the second valve module are each attachable to the first body portion and to the second body portion. [Claim 7]
The composite valve according to Claim 1,
wherein a combination of the first valve module and the second valve module is a combination of a speed controller and a pilot check valve, a combination of the pilot check valve and a residual pressure discharge valve, or a combination of the speed controller and another speed controller,

wherein a valve mechanism of each of the speed controllers includes a check valve body that controls a flow direction of the pressure fluid that flows through the fluid flow path and a needle valve that controls a flow rate of the pressure fluid,
wherein a valve mechanism of the pilot check valve includes a check valve body that controls a flow direction of the pressure fluid that flows through the fluid flow path, a pilot valve body that displaces, by an action of a pilot fluid, the check valve body to a position where the check valve allows a flow of the pressure fluid in a forward direction and a flow of the pressure fluid in a backward direction, and a pilot port that is used for supplying the pilot fluid to the pilot valve body, and
wherein a valve mechanism of the residual pressure discharge valve includes a discharge flow path that branches off from the fluid flow path and that communicates with the outside and a discharge valve body that opens and closes the discharge flow path.