Abstract: An instrument manifold and pressure transducer are provided for detecting a pressure differential across an orifice fitting. Removable flanges are utilized on the output side of the orifice fitting, and on the input and the output ends of the manifold. Each flange may be structurally secured to its respective piece of equipment by special nipples, and is provided with apertures for receiving bolts to interconnect the flanges and the equipment. The versatility of the equipment is substantially increased, the response time and signal reliability is increased, and the installation costs are reduced.

Abstract: This invention is intended to solve the problem that a valve casing for use in a butterfly valve formed by press working, which is advantageous from the standpoint of productivity, thickness and weight, has such as a serious disadvantage of breakage or deformation and lowering in the sealing performance due to release on aging or the seal ring when the valve is mounted on pipe line and clamped from both sides. From this point of view, a valve casing according to this invention is formed into a double structure composed of an inner shell and an outer shell, the inner shell comprising a cylindrical part defining a bore and seal ring receiving portions formed on both ends with their diameters enlarged larger than the cylindrical part substantially forming an S-shape in cross section, the outer shell defining a space by surrounding a whole outer periphery of the inner shell, and the inner shell and the outer shell being superposed to each other at both end of the valve casing.

Abstract: An apparatus for attaching a fire hose to a fire hydrant and for facilitating remote operation of the hydrant actuator stem. A water supply module containing a length of conduit is coupled between a hydrant port and a fire hose. An articulated boom supports an upper motor assembly coupled to the actuator stem of the hydrant. A remote transmitter can be used to broadcast control signals to the water supply module to operate the motor assembly. The motor assembly rotates the actuator stem of the hydrant between fully closed and fully open positions. The apparatus frees a fire fighter normally stationed at the hydrant, permitting the fire fighter to engage in the initial fire fighting activities at the scene of a fire.

Abstract: A valve structure for an undersea pipeline including a valve cartridge received in a cage formed by a pair of thick parallel plates secured together by threaded studs. The studs entered in U-shaped rows down along the sides of the plate and in an arc near the bottom from side to side. There are no studs across the top. With the nuts loosened at one end of the studs, hydraulic rams, which connect the thick plates near the four corners thereof, may be extended to separate the plates slightly for removal and replacement of the valve module. Stop members prevent complete separation of the nuts from their studs.

Abstract: A line-removable valve structure comprising a pipeline-supporting cage and a cartridge containing the working valve components. The cage comprises a pair of thick steel end plates connected by studs and a balanced array of hydraulic rams. With nuts on the studs loosened, the rams can force the end plates apart for removal of the valve cartridge. Sliding guide means are provided to enable such axial movement of the end plates but to prevent relative radial movement thereof, thus maintaining the integrity of the pipeline.

Abstract: A synthetic resin valve in which a body is connected end-to-end in abutting relationship to a cylindrical body cap having a flange at one end and a seat at the other end by screwing the two together with a cap nut. The seat includes a ring-like element having a lesser diameter portion which is fitted into an annular groove adjacent to a front end portion of the body cap, and a greater diameter portion which engages the outer peripheral surface of the front end portion of the body cap, the front face of the larger diameter portion of the ring-like element preferably resting in the same plane as the front face of the body cap which abuts the body. The ring-like element is cut radially in one circumferential region so that it may be deformed around the body cap such that its smaller diameter region may be fitted into the annular groove, and has a rear wall for engaging the cap nut.

Abstract: A wafer-type swing check valve construction having a metallic housing body provided with an inlet and an outlet interconnected together by a valve seat that is adapted to be opened and closed by the effect of a pressure differential acting across a metallic valve disc pivotally mounted to the housing body by a pivot pin-like part of the disc that has opposed ends thereof rotatably received in cooperating recess means in the housing body to provide a pivot arrangement for the valve disc, the valve disc cooperating with the valve seat to define a seating area therewith.

Abstract: A plumbing test fitting for waste or vent pipes and stacks extending between adjacent floors of a building having a closure plate adapted to be slidably fitted between a pair of spaced adjacent ends of a pair of pipes, the joint being sealed by a detachable sealing clamp which also sealably bears against the periphery of the closure plate. A sliding valve element having an operating stem which extends outwards between the pipes and through the sealing clamp can be operated to open or close a passage in the closure plate so as to enable the pipe to be closed for testing and thereafter opened to permit testing fluid to escape down the pipes.

Abstract: The butterfly valve includes a pair of tailpieces which are threaded onto the outer ends of axially spaced pipe sections of a piping system and have a radially extending flange, a valve unit having a wafer-like body which fits between the tailpieces, and a pair of clamping members, each encircling one of the tailpiece flanges. All of these components preferably are fabricated by a powder-metallurgy process.The valve unit is supported between the tailpieces by a plurality of bolts which extend through axially alignable, circumferentially spaced apertures in the clamping members and the outer periphery of the valve body. After the butterfly valve has been installed, the valve unit can be removed without disturbing the piping system by removing the bolts or rotated 360.degree. without disturbing the piping by loosening the bolts so that the valve unit and clamping members can be rotated relative to the tailpieces.

Abstract: The flangeless valve is disposed between flange bolts of adjacent pipe flanges. The valve comprises a body which has two parts, a closing element rotatably mounted within the body and seat rings mounted in ring-shaped transverse grooves machined in both sides of the body. The valve body diameter is small enough so that the valve may be placed in the pipeline, between flange bolts of the pipe flanges. Most bolts do not contact the valve body and pass through holes in the pipe flanges; other fasteners are attached to a frame on the valve through the flanges thereby transmitting the bolt clamping force. One body construction can use a circumferential seal between the body halves in the body joint. Such seal ends at the shaft and a ring-shaped seal is located in a plane perpendicular to the circumferential seal and presses against its ends with a tightenable bushing.