Abstract: A drain valve includes an inlet plenum, a first orifice downstream from the inlet plenum, a second orifice downstream from the first orifice, and a fluid passage between the first and second orifices. A piston having a first position and a second position has a first surface area exposed to the fluid passage when the piston is in the first and second positions and a second surface area exposed to the inlet plenum when the piston is in the second position.

Abstract: A vehicle drain hole structure includes an enclosure (e.g., an air intake tube, an intake enclosure, a resonator, a cleaner, etc.) defined by at least one wall. The at least one wall has an inner surface and an outer surface. A drain hole is defined in the at least one wall for providing drainage from the enclosure. The drain hole extends from a first end defined in the inner surface to a second end defined in the outer surface. The first end of the drain hole at the inner surface has a larger cross-sectional area than the second end of the drain hole at the exterior surface to reduce the likelihood of a liquid film forming across the drain hole.

Abstract: A mechanism is adapted to clean a filter of a steam trap by opening a valve at one end of the filter by turning an adjusting screw secured to one end of the valve without shutting down a boiler in which a flow path is formed from one end of the filter to a drain via the valve and the adjusting screw after the valve opening. A stop projects into the valve for preventing the adjusting screw from disengaging the valve by stopping an annular flange of a valve cone in the valve opening operation.

Abstract: A condensate trap assembly includes a monitoring device 4 which is closely coupled to, or integral with, a condensate trap 2. The monitoring device 4 includes a flow restriction 56 and a condensate receiving chamber 48 which accommodates a sensor 66. The chamber 48 communicates with an inlet passage 52 on the upstream side of the flow restriction 56 and, via a bore 50, with an outlet passage 54 on the downstream side of the flow restriction 56. The sensor 66 provides an indication of the condition of the condensate trap 2, in accordance with whether the sensor tip 68 is submerged in condensate and in accordance with the temperature of the condensate.

Abstract: A combination steam trap and flow valve assembly including a compact housing having a steam trap chamber, valve chambers, a cover, and a body. The steam trap and valve chambers are integrally formed within the body to create a compact integral assembly. Valve assemblies are received in the valve chambers to control the flow of steam and/or condensate into and out of the assembly. A steam trap mechanism is positioned within the steam trap chamber and the valve unit of the steam trap mechanism being positioned in the cover. The cover is removably attached to the uppermost surface of the body. Passages are provided in the body and cover thereby allowing the flow of steam and/or condensate to the steam trap chamber.

Abstract: A station for mounting a steam/condensate responsive device in a condensate return line comprises a housing block having front and back faces, opposite end faces and top and bottom faces. The back face has a mount for removably mounting a steam/condensate responsive device. The end faces has inlet and outlet ports for connection in a condensate return line. The bottom face has a third port. An inlet valve and outlet valve are operatively interposed between and control flow between the mount and corresponding ones of the inlet and outlet ports. The inlet and outlet valves are located on and extending forward from the front face. The inlet and outlet valves are angled acutely upwardly along the front face. A compact manifold assembly mounts a plurality of such stations.

Abstract: A condensate trap assembly 12 includes a valve body 28 accommodating a condensate trap element 34 and a valve element 36. The valve element 36 is movable by a positioner 26 to direct flow in a condensate line 10 either through the condensate trap afforded by the trap element, or through the valve bypassing the condensate trap, or to shut off the condensate line 10. The positioner rotates the valve element 36 under the control of control means 54 which responds to signals from a sensor 24 detecting the presence or absence of condensate in a monitoring chamber 16 and the temperature within the chamber 16. The control means 54 is also responsive to the temperature sensed by a temperature sensor 22 upstream of a process 2 utilizing steam or other fluid which is applied to the condensate trap assembly 12.

Abstract: A steam trap test station includes a body connected to a source of steam, a steam trap and an object to be heated by steam. A rotor fixed for rotation in the body. The body having porting walls defining body ports, and the rotor has porting walls defining rotor ports. The body and rotor ports are adapted and arranged such that an "ON" mode is provided wherein steam passes through the station from the source of steam through the steam trap to the object to be heated. A "TEST OUTLET" mode being first reached when the rotor is turned in a first direction from the "ON" mode wherein an outlet max be tested for leakage. A "TEST INLET" mode is second reached when the rotor is turned in the first direction from the "ON" mode wherein inlet media may be tested. A "BYPASS & VENT" mode is first reached when the rotor is turned in a second direction from the "ON" mode wherein the steam trap is bypassed and vented.

Abstract: A condensate trap assembly comprises a valve body 2 and a condensate trap 4 releaseably secured to the valve body 2. The valve body 2 has an inlet and an outlet and accommodates a valve element which is movable between three operative positions in which respectively:(i) the inlet is isolated from the condensate trap 4 and from the outlet,(ii) the inlet communicates directly with the outlet, by passing the condensate trap 4; and(iii) the inlet communicates with the outlet through the condensate trap 4.The valve element is housed for rotation within the valve body 2 so that the operative position of the valve is determined by the angular position of the valve element, which is controlled by an adjustment knob 12.

Abstract: An annular fluid seal element for use in an air drier or condenser has a section which provides lips which, when assembled to an aperture in a member, lie to either side of the aperture, one shorter lip acting as a compression seal between the latter member and another and the other longer lip sealingly covering a plurality of passages on the member but permitting fluid flow via the passages in the event of pressure build-up inside them.

Abstract: A fluid choke for controlling fluid flow, such as condensate draining from a high pressure steam line, that does not require the use of any separate filters and constructed entirely from a section of bar stock including a reduced diameter inlet section having a small orifice extending axially therethrough with a plurality of radially extending openings from the orifice to its outer diameter to prevent the accumulation of foreign matter in the orifice, and a larger diameter outlet section having a larger diameter and longer orifice extending axially therethrough communicating with the inlet section orifice that serves to provide a pressure drop permitting the inlet section orifice to be somewhat larger in diameter, further reducing the possibility of foreign matter accumulation in the inlet orifice section and also reducing the amount of flashing in the inlet section.

Abstract: A condensate removal device which includes two parallel paths for removal of condensate and gases from a fluid system is provided with a thermostatically operated valve in one path and a drain orifice of a preselected size in the other path. The combination is disclosed as it is used in drain lines of a steam system. A bellows or other thermostatically operated valve controls one path to the drain and is in the open position during warmup of the system to permit the passage of the large quantities of air, condensate, particulates and other matter which are present in the system during the warmup stage of operation. The thermostatic element is designed to be closed at operating temperatures. The drain orifice in the other path is designed to continuously pass the condensate and the like which will form in the line when the system is at or near operating temperatures while restricting the passage of working vapor.

Abstract: A steam trap allowing the escape of condensate from a working fluid of steam comprises an escape valve mounted in a chamber in which the working fluid flows. The escape valve includes a valve seat member and a deformable metal diaphragm normally closing the steam trap and preventing the escape of steam. The diaphragm closes a housing in which a control fluid of water initially only partially fills the housing to which a vacuum is later applied. The housing bears along the periphery of the diaphragm where the diaphragm is supported by a shoulder in the valve seat member. The valve seat member includes a cylindrical central chamber radially inwardly of the valve seat and an annular chamber radially outwardly of the valve seat. The cylindrical chamber is larger in diameter than and upstream of an escape passageway for carrying away condensate also in the valve seat member. The annular chamber is in communication through a check valve and passages with the chamber in which the escape valve is mounted.

Abstract: A steam trap test station includes a body connected to .[.a source of steam.]. .Iadd.an inlet for steam and condensate from an object to be heated by steam.Iaddend., a steam trap and .[.an object to be heated by steam.]. .Iadd.a condensate outlet.Iaddend.. A rotor .Iadd.is .Iaddend.fixed for rotation in the body. The body .[.having.]. .Iadd.has .Iaddend.porting walls defining body ports, and the rotor has porting walls defining rotor ports. The body and rotor ports are adapted and arranged such that an "ON" mode is provided wherein steam .Iadd.and condensate .Iaddend.passes through the station from the .[.source of steam.]. .Iadd.inlet .Iaddend.through the steam trap to the .[.object to be heated.]. .Iadd.outlet.Iaddend.. A "TEST OUTLET" mode .[.being.]. .Iadd.is .Iaddend.first reached when the rotor is turned in a first direction from the "ON" mode wherein .[.an.]. .Iadd.the .Iaddend.outlet .[.max.]. .Iadd.may .Iaddend.be tested for leakage.