Koncentric® Unions
Koncentrik® unions are used in applications having high-pressure and vibration conditions such as power generation, compressors, and turbines. The unique design allows frequent leak-tight assembly and reassembly.
Koncentrik® unions join pipe or tubing. Metal-to-metal contact between mating taper angles in the union is reinforced by a fully confined Teflon seal to form a leak-proof joint.
Koncentrik® Unions offer all the advantages of flanges without the disadvantages. Like flanges, Koncentrik® unions can hold high pressures and can be repeatedly disassembled and resealed. But, unlike flanges, Koncentrik® unions are light in weight and quick to assemble. Only one nut holds the union together while flanges require several bolts and cumbersome rotational alignment.
Koncentrik® unions’ four-piece assembly consist of a threaded piece, tailpiece, union nut, and PTFE seal. Metal-to-metal contact between mating taper angles in the union is reinforced by a fully confined PTFE seal to form a leak-proof joint. The PTFE seal is preinstalled in a precision-machined groove in the male cone shaped tailpiece prior to shipment. The PTFE seal cushions the metal-to-metal contact of the surfaces and prevents them from becoming galled or scratched. The unions can be taken apart and resealed many times with no damage to the union or loss of sealing effectiveness.
Specifications
- MAWP: Up to 10, 000 psig (689 bar)*
- Temperature Range: -100 to 450°F
- Body Material: 316/316L Stainless Steel, Alloy 400.
- End Connection
- Sizes: 1/8 to 2 in.
- Adapter types: NPT, SAE, pipe socket weld, tube socket weld, pipe butt weld, tube butt weld.
Resources
*Pressure ratings are based on using Schedule 40 pipe.
Suggested Applications for Koncentrik® Unions
Koncentrik® unions have been used extensively in high pressure ground support missle systems, hydraulic control systems for turbine generators, and in nuclear and conventional power plant applications.
Pipe Swivels
Pipe Swivel Fittings are used with hose assemblies to eliminate the need to rotate the entire hose when it is connected and to allow hoses to rotate freely during use.
Pipe swivels are female adapters featuring a nut with a straight thread captured on a 30° cone tapered gland. A seal occurs between the taper in the male fittiPipe Swivel fitting male elbow ng and the 30° cone tapered gland. Pipe swivels are for use with male tapered pipe thread hose fittings with a 30° seat. Pipe Swivels do not seal on the thread-like most pipe threads; they seal on the nose of the swivel and the seat of the male tapered pipe thread. This creates a metal-to-metal seal. The Pipe Swivel Fitting is first installed in the mating component. Then the hose fitting is connected to the swivel nut. The swivel nut rotates so the hose does not.
Specifications
- MAWP: Up to 6000 psig (413 bar)
- Temperature Range: -425 to 1200°F
- Body Material: 316 SS, Alloy 400.
- End Connection
- Sizes: 1/4 to 2 in.
- Adapter types: MNPT, FNPT, SAE
- Shapes: Straights, 90° elbows, 45° elbows, tees, unions, adapters, connectors.
Resources
Suggested Applications for Pipe Swivels
Pipe Swivels should be used as hose adapters only. For joining pipe, tubing, valves or other sytem components, other connection technologies should be used.
Threaded Pipe Fittings & Adapters
SSP offers NPT and BSP tapered and straight thread pipe fitting and adapters for a wide range of process and utility applications.
SSP offers a wide selection of tapered and straight thread pipe fittings and adapters for industrial applications.
Specifications:
- MAWP: 7200 psig
- Temperature Range:
- 316 SS: -425 to 1200°F
- Alloy 400: -65 to 600°F
- Brass: -40 to 400°F
- Materials:
- Bodies: 316/316L SS, Alloy 400, Brass
- O-Rings: FKM, Buna
- End Connections
- Sizes: 1/8 to 2 in.
- Threads: NPT, SAE, BSPP, BSPT
- Types: Couplings, Nipples, Plugs, Caps, Tee, Crosses, 90° Elbows, 45° Elbows, Adapters, Bulkhead Straight, Tees and Adapters, Extended, Straight, Elbows and Tees, Pipe and Tube Socket Weld and Butt Weld.
Resources
Applications
Tapered Pipe Fittings
Tapered Pipe Fittings are still widely used in industry. That is because of their relative low-cost, widespread familiarization among users, lack of alternative port designs offered by many component manufacturers, and/or when exposed to more caustic media which requires the corrosion resistance of metal-only seals.
Straight Thread Fittings
Straight threaded fittings and adapters (also known as O-Ring boss fittings and BSPP fittings) seat an O-Ring on the shoulder of the male half of the connector against a metal sealing surface on the female port. Sealing is achieved and maintained by O-Ring compression resulting from the clamping force generated by the tightening action. The straight threads do not seal; they provide the resistance (holding power) for service pressure.
Straight thread adapters feature:
- Rubber-on-metal seating does not distort any metal parts
- Provide a tangible “feel” when the connection is tight.
- Virtually unlimited disassemblies and reassemblies, though the O-Ring should always be replaced as a precaution. Variety of compounds available for compatibility with system and environmental media.
- Adjustable and non-adjustable. adjustable fittings, such as elbows and tees, allow the user to orient the shape in the desired direction before tightening to assemble.