Piston Valves

Armstrong Piston Valves are full port forged steel isolation valves with a maximum operating pressure of 136 barg1973 psig and a maximum operating temperature of 427°C800°F. The burnished piston and metal reinforced graphite rings provide leak-proof shutoff 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.
Armstrong Piston Valves Features:
Leak-proof isolation
Sizes from 15mm12” NB to 40mm1-12” NB
Choice of socket weld, screwed or flanged end connections
Compatible with API, 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