TCS – swing check valve, 1/2–48″, ASME 150–2500 / API 6A up to 15000
Swing check valve with a one-piece body and bolted bonnet, sizes from 1/2 to 48 inch, ASME classes 150–2500. To API 6A it is available up to 15000 psi. Temperatures from −196 to +400 °C.
- Model
- TCS
- DN
- 1/2–48″; API 6A 1 13/16–11″
- Pressure
- ASME 150–2500; API 6A 2000–15000 psi
- Temperature
- −196…+400 °C
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
TCS swing check valves have a one-piece body and a bolted bonnet, inside which a disc is suspended on a hinge. Forward flow deflects the disc and opens the passage; when the flow stops or reverses, the disc under its own weight and the back pressure sits on the seat and closes the pipeline, protecting compressors, pumps and equipment from reverse flow.
In this design the seat is made integral with the body, with a slope that presses the disc and gives tightness even at low differential pressure. The valve is repaired in the line: access to the disc and hinge is through the bonnet without cutting out the body. The bore is full; a primary metal seat and BX metal gaskets are standard.
The valves are designed to API 6D, API 6A and ASME B16.34. The range is from 1/2 to 48 inch for ASME classes 150–2500 and from 1 13/16 to 11 inch for API 6A at pressures of 2000–15000 psi. Operating temperatures are from −196 to +400 °C, so the valve is also suitable for cryogenic LNG systems. Face-to-face length is to API 6D, API 6A or the manufacturer standard.
The seat and disc are overlaid with tungsten or chromium carbide or Ultimet alloy. Sealing is by BX metal gasket, lip seals, O-rings or a chevron V-packing. Fasteners are ASTM A193 B7/B7M/B16, A320 L7/L7M, B8/B8M, duplex UNS S31803, super duplex UNS S32760 and A453 Gr.660. On request, overlay of sealing and wetted surfaces, compliance with NACE MR0175/MR0103, PED 2014/68/EU and ATEX 2014/34/EU, and a V-port version are available.
Connections are flanged to ASME B16.5/B16.47 and 6B/6BX, socket weld (ASME B16.11) and butt weld (ASME B16.25) ends, threaded, hub, and ISO 27509 compact flanges. The subsea version to API 6DSS/17D has a system for locking in the open position by an ROV for reverse cleaning with pigs. The valve is used on discharge lines of compressor stations and pumps, on gas pipeline branches, in the piping of gas distribution stations and UGS facilities, in pipeline transport, at fields, on FPSOs and at LNG terminals.
Technical specifications
| Model | TCS |
|---|---|
| DN | 1/2–48″; API 6A 1 13/16–11″ |
| Pressure | ASME 150–2500; API 6A 2000–15000 psi |
| Temperature | −196…+400 °C |
| Design | one-piece body with bolted bonnet, hinged disc; seat integral with the body, sloped for sealing at low pressure; in-line repair |
| Standards | API 6D, API 6A, ASME B16.34 |
| Seat/disc overlay | TC or CrC, Ultimet alloy |
| Sealing | BX metal gasket standard, lip seals, rings, chevron packing |
| Connections | flanges ASME B16.5/B16.47, 6B/6BX; SW/BW; thread; hub; ISO 27509 |
| Options | overlay, NACE MR0175/MR0103, PED, ATEX, V-port |
Request a price and lead time
TCS – swing check valve, 1/2–48″, ASME 150–2500 / API 6A up to 15000. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What sizes and pressure classes does the TCS valve have?
From 1/2 to 48 inch for ASME classes 150–2500 and from 1 13/16 to 11 inch for API 6A at pressures of 2000–15000 psi.
Can the valve be repaired without removing it from the line?
Yes, access to the disc and hinge is through the bonnet without cutting out the body.
What is the temperature range of the valve?
From −196 to +400 °C, so the valve is also suitable for cryogenic LNG systems.
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