piston valves
Piston Valve Features
Armstrong Piston Valves are full port forged steel isolation valves with a maximum operating pressure of 1973 psig/136 Barg and a maximum operating temperature of 800°F/427°C. The burnished piston and metal reinforced graphite rings provide leak-proof shut off and allow Armstrong Piston Valves to be operated at higher temperatures, while also extending operating life. Armstrong Piston Valves are available in Socket Weld, BSPT, and NPT end connections. Flanged ends can be supplied upon request. Armstrong Piston Valves are ideal for saturated and superheated steam, and hot water applications.
- Leak-proof isolation
- Sizes from 1/2”/15mm to 1-1/2”/40mm
- Choice of socket weld or threaded connections
- Compatible with ASME, IBR, and DIN standards
- Resistant to cavitation
- All sealing valve components may be easily replaced in-line
- Long-term operation. Piston valve design ensures actuation even after many years without operation
- Fire-proof performance
Design Standards
- ASME (B16.34, B16.5)
- IBR 1950
- DIN (3202, 10226-1)
- Inspection and testing (API 598)
- Leak test (ANSI/FCI 70-2 )
- Fire test (API SPEC 6FA : 1999)
