A function fitting is provided, for regulating the fluid flow in a pneumatic system, including a first connector configured to make a fluidic through connection with a pipe of the system, a second connector configured to make a fluidic through connection with a pipe of the system, a restriction element arranged between the first connector and the second connector and including a spool configured to allow or obturate the passage of fluid between the connectors, controller operationally connected to the spool and including a rotary electric motor configured to move the spool, and transmission configured to connect the motor and the spool operationally in such a way as to convert the rotary movement of the motor into a linear movement of the spool, and an electrical connector configured to electrically connect the controller to an external electrical system, wherein the controller includes an angular position transducer configured to detect the angular position of the motor.

A pluming fitting and adapter for coupling a tubing to the plumbing fitting. The adapter has first and second adapter end portion with connected fluid passageways. The second adapter end portion being insertable into the free-end portion of the tubing. A pluming fitting housing has a chamber sized to receive the first adapter end portion. When the first adapter end portion is positioned within the chamber, an outer end portion of its fluid passageway is in fluid communication with the chamber. A seal and gripper ring within the chamber seal with and releasably grip the first adapter end portion.

A valve and adapter for coupling a tubing to the valve. The adapter has first and second adapter end portion with connected fluid passageways. The second adapter end portion being insertable into the free-end portion of the tubing. A valve housing has a first chamber sized to receive the first adapter end portion and a second chamber has inward and outward fluid ports. When the first adapter end portion is positioned within the first chamber, an outer end portion of its fluid passageway is in fluid communication with the inward fluid port of the second chamber. A seal and gripper ring within the first chamber seal with and releasably grip the first adapter end portion. A valve element selectively control fluid flow between the first and second fluid passageways. The adapter may be used with a test cap and other fittings which include a seal and a gripper ring.

Overflow protection and monitoring devices capable of coupling to a drainage pan and may include: a drainage line; a base, the base including an input port; a dry section; and a wet section, the input port capable of coupling to the drainage pan; a base cover, the base cover removably coupled to the base, the base cover including a base cover output port capable of coupling to the drainage line; a fluid displacement mechanism located in the wet section, the fluid displacement mechanism including a fluid displacement mechanism output port; a fluid detection mechanism located in the wet section; and a base attachment, the base attachment coupled to the fluid displacement mechanism output port and the base cover output port, the base attachment including an air relief port and back-flow preventer; a control unit capable of energizing the fluid displacement mechanism upon receiving a signal from the fluid detection mechanism.

Overflow protection and monitoring devices capable of coupling to a drainage pan and may include: a drainage line; a base, the base including an input port; a dry section; and a wet section, the input port capable of coupling to the drainage pan; a base cover, the base cover removably coupled to the base, the base cover including a base cover output port capable of coupling to the drainage line; a fluid displacement mechanism located in the wet section, the fluid displacement mechanism including a fluid displacement mechanism output port; a fluid detection mechanism located in the wet section; and a base attachment, the base attachment coupled to the fluid displacement mechanism output port and the base cover output port, the base attachment including an air relief port and back-flow preventer; a control unit capable of energizing the fluid displacement mechanism upon receiving a signal from the fluid detection mechanism.

A pressure regulator includes a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway. An orifice is disposed between the fluid inlet and the fluid outlet. A valve seat is disposed within the fluid passageway. A movable valve plug is disposed within the fluid passageway, and the valve plug interacts with the valve seat to selectively open or close the fluid passageway. A cage is disposed in the fluid passageway, the cage surrounds the valve plug, and the cage includes a mechanical stop that limits movement of the valve plug within the cage away from the valve seat.

A choke valve comprising: a body having an axial through hole and a radial entry port; a valve seat coaxially housed in the body axial through hole on a first side of the radial entry port; a pressure balanced valving member axially reciprocable within the body axial through hole between a first sealing position bearing against the valve seat and a second position spaced away from the seat; an actuator housing operably connected to the valving member; and a detachably connected reinforcement member detachably connected to the actuator housing and increasing the axial load that the actuator housing can take before failure of the actuator housing.

In at least one embodiment, the present invention provides a self-cleaning valve having a valve body defining an internal cavity and having a first end, a second end, a perimeter wall extending between the first end and a second end, an inlet fluidly communicating with the internal cavity, an outlet fluidly communicating with the internal cavity and a stem bore fluidly communicating with the internal cavity, a valve stem having a first end and second end and operable for linear movement between a first open position and a second closed position, the valve stem received in the stem bore, the first end of the valve stem having a plug, the plug adapted to seal the inlet of the valve body when in the second closed position.

A fluid end is formed from a first body attached to a separate second body. Each body includes an external surface. When the bodies are attached, their respective external surfaces are in flush engagement. A plurality of bores are formed in the second body that are alignable with a plurality of corresponding bores formed in the first body. The fluid end may be used with seals disposed within recesses within each bore to seal against corresponding sealing surfaces. Further, retaining closures may be bolted to the fluid end bodies, such that the closures have a threadless connection to the fluid end bodies. Various combinations of such components may be utilized.

A control valve pneumatic actuator using a transparent casing includes a casing having a cylindrical shape and made of a transparent material to enable an inside of the casing to be observed from outside, a driveshaft penetrating the inside of the casing, a diaphragm fixedly connected to the driveshaft inside the casing and vertically moving in the casing according to a movement of the driveshaft, a ring holder attached to an outer circumferential of the diaphragm and having a groove having a C-shape, a rubber ring inserted into the groove of the ring holder, a control valve connected to a lower portion of the drive shaft extending below the casing, and a yoke arranged below the casing and connecting the casing to the control valve.