SSX 176 — diaphragm type gas slam-shut valve, up to 102 bar
SSX 176 is a diaphragm type slam-shut valve with a design pressure of up to 10.2 MPa (102 bar). It quickly shuts off the gas supply when the downstream pressure goes beyond the set points. It is used in high pressure trunk systems, medium pressure distribution networks, gas distribution stations, compressor stations and LNG terminals.
- Type
- slam-shut valve with a diaphragm
- Design pressure
- up to 10.2 MPa (102 bar)
- OPSO set point
- 0.2–9 MPa (2–90 bar)
- UPSO set point
- 0.005–9 MPa (0.05–90 bar)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
SSX 176 is a diaphragm type slam-shut valve (SSV) for high pressure trunk systems and medium pressure distribution networks. It quickly stops the gas supply when the monitored pressure goes beyond the set points. The valve is installed at gas distribution stations, compressor and booster stations, in underground gas storage, at liquefaction and regasification plants, in marine LNG terminals, at power plants, in heavy industry and at district pressure reduction stations. By purpose, SSX 176 works together with ASX 176 series pilot regulators and similar high pressure regulators.
Tripping takes less than 1 second. The setting is made by a pressostatic device that monitors the pressure downstream of the valve. The valve can also be closed manually with a button on the pressure switch or remotely by a signal from the control system. Reopening (resetting) is done by hand only, after the cause of tripping has been found and eliminated. The design pressure is up to 10.2 MPa (102 bar). The over pressure set point (OPSO) is set from 0.2 to 9 MPa (2–90 bar), and the under pressure set point (UPSO) from 0.005 to 9 MPa (0.05–90 bar). The AG accuracy class is up to 2.5 for both functions.
The valve is made in sizes DN 25, 50, 80, 100 and 150 (1″–6″). The connection is flanged, ANSI 150, 300 and 600 per ASME B16.5 or PN 16 per EN 1092, and the face-to-face length complies with EN 14382. The ambient and gas temperature is from −20 to +60 °C.
The design differs from the SBC series. The body and obturator are made of ASTM A350 LF2 steel, and the sealing surface of the obturator is nickel plated. The seat is polyurethane, the diaphragm is rubberized fabric formed by hot pressing, and the seals are NBR. The compression fittings are galvanized steel per DIN 2353, or stainless steel on request. The valve is designed to EN 14382 and certified to PED 2014/68/EU. Bubble-tight sealing is better than class VIII per ANSI/FCI 70-3. A built-in bypass, a trip test button, a limit switch and remote tripping are provided. The valve is compatible with biomethane, and special versions exist for hydrogen blends and for 100 % hydrogen.
Technical specifications
| Type | slam-shut valve with a diaphragm |
|---|---|
| Design pressure | up to 10.2 MPa (102 bar) |
| OPSO set point | 0.2–9 MPa (2–90 bar) |
| UPSO set point | 0.005–9 MPa (0.05–90 bar) |
| AG accuracy class | up to 2.5 |
| Nominal sizes | DN 25, 50, 80, 100, 150 |
| Connections | ANSI 150/300/600 per ASME B16.5; PN 16 per EN 1092 |
| Temperature | from −20 to +60 °C |
| Materials | body and obturator ASTM A350 LF2 steel (nickel plated sealing surface); seat polyurethane; diaphragm rubberized fabric |
| Standards | EN 14382, PED 2014/68/EU |
| Options | limit switch, remote tripping; hydrogen versions |
Request a price and lead time
SSX 176 — diaphragm type gas slam-shut valve, up to 102 bar. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What range of set points does SSX 176 have?
The over pressure set point (OPSO) is from 0.2 to 9 MPa (2–90 bar) and the under pressure set point (UPSO) from 0.005 to 9 MPa (0.05–90 bar). The AG accuracy class is up to 2.5 for both functions.
Which sizes and connections are available for SSX 176?
Nominal sizes DN 25, 50, 80, 100 and 150 (1″–6″). The connection is flanged, ANSI 150, 300 and 600 per ASME B16.5 or PN 16 per EN 1092.
Is the valve suitable for biomethane and hydrogen?
The valve is compatible with biomethane. Special versions are made for hydrogen blends and for 100 % hydrogen.
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