Abstract: A Y-strainer operable to strain debris and/or particles from a fluid in a flowing system is disclosed. The Y-strainer includes a body, a nut, a retainer, a strainer, and a retainer seal positioned about the retainer. The body includes an inlet port, an outlet port, a central portion, and a barrel leg. The nut is removably fastened to the barrel leg, while the retainer is coupled to the nut and positioned within the barrel leg. The strainer is engaged with the retainer and positioned within the barrel leg. The barrel leg interconnects with the central portion at an angle, which can be an acute angle. The retainer, nut, strainer, and retainer seal can form a strainer insert subassembly that is removable from the barrel leg as a single unit. A method of assembling the foregoing Y-strainer is also provided.

Abstract: Exemplary embodiments are directed to Y-check valves, generally including a body, nut, retainer, cage subassembly, disc, and spring. The retainer, cage subassembly, disc, and spring are positioned within a barrel leg of the body, with the disc positioned within the cage subassembly. The disc is movable between a first position in which it sealingly engages a sealing surface of the cage subassembly and prevents fluid backflow through the body and a second position in which it does not sealingly engage the sealing surface and permits fluid flow through the body. The spring biases the disc into the first position. The nut, retainer, cage subassembly, disc, and spring can be provided as an insert subassembly that is removable from the barrel leg as a single unit. The disc can be provided as a poppet valve stem and plug. Methods of assembling the exemplary Y-check valves are also provided.

Abstract: A check valve assembly includes a body, a valve assembly configured to engage a port of the check valve assembly, and a handle integrally formed with the body and extending from a substantially cylindrical exterior surface thereof. The handle includes a first vertical support member having a first interior surface, a second vertical support member having a second interior surface, and a horizontal support member that has a third interior surface and extends between the first and second vertical support members. The first, second, and third internal surfaces, and the exterior surface of the body member, define a handle aperture. The first and second interior surfaces of the handle aperture are configured to accommodate first and second bolts of a pipe flange fitting extending through the handle aperture.

Abstract: A check valve assembly includes a body, a valve assembly configured to engage a port of the check valve assembly, and a handle integrally formed with the body and extending from a substantially cylindrical exterior surface thereof. The handle includes a first vertical support member having a first interior surface, a second vertical support member having a second interior surface, and a horizontal support member that has a third interior surface and extends between the first and second vertical support members. The first, second, and third internal surfaces, and the exterior surface of the body member, define a handle aperture. The first and second interior surfaces of the handle aperture are configured to accommodate first and second bolts of a pipe flange fitting extending through the handle aperture.

Abstract: A check valve assembly includes a body, a valve assembly configured to engage a port of the check valve assembly, and a handle integrally formed with the body and extending from a substantially cylindrical exterior surface thereof. The handle includes a first vertical support member having a first interior surface, a second vertical support member having a second interior surface, and a horizontal support member that has a third interior surface and extends between the first and second vertical support members. The first, second, and third internal surfaces, and the exterior surface of the body member, define a handle aperture. The first and second interior surfaces of the handle aperture are configured to accommodate first and second bolts of a pipe flange fitting extending through the handle aperture.

Abstract: A segmented pipe coupling includes traction bolts that permit movement of shanks of the traction bolts into an attitude in which the head and nut of the traction bolts engage their respective bolting faces in continuous engagement, thus to eliminate a drop in tensile stress in a shank of the traction bolt due to shifting of the head of the bolt or the nut subsequent to initial torquing down of the nut.

Abstract: A knife gate valve having modular ends for attachment to pipe ends is disclosed. A knife gate is movable transversely to a fluid flow path and constrained by guide plates positioned along opposite edges of the gate. Pairs of spacer rings each supporting a respective valve seat are positioned on opposite sides of the guide plates, the seats sealingly interfacing with the knife gate and the guide plates. Modular ends formed from tubes with flanged ends extend outwardly from the valve in opposite directions for connection to the pipe ends. The flanged ends of the tubes interface with the seats. End plates are attached on opposite sides of the guide plates. The end plates have openings which receive the tubes and surfaces around the openings which engage the flanged ends of the tubes and capture the modular ends, seats and spacer rings against the knife gate and the guide plates.