Screwed End Piston Valve

Full port forged steel isolation valves capable of operating at a maximum pressure of 1973 PSIG/136Barg & temperature of 800F/427C. Piston Valves with burnished pistons and metal reinforced graphite rings have leak-proof shut-off and can be operated at higher temperatures, as well as having a longer life span.

BSPT, NPT, and socket welded ends are available on piston valves. We can supply flanged ends upon request. The piston valve is ideal for saturated and superheated steam, and hot water.

Feature of Piston Valves  :

• Isolation that prevents leaks
• Available in sizes from 1/2"/15mm to 1-1/2"/40mm
• Connectivity options: threaded or socket welded
• ANSI-compliant
• Cavitation-proof
• Sealing valves can be easily replaced in-line
• Operation on a long-term basis. After many years without operation, piston valves can still actuate
• Exceptional fire-proofing

Design Standards

• ASME (B16.34, B16.5)
• Inspection and testing (API 598)
• Leak test (ANSI/FCI 70-2 )
• Fire test (API SPEC 6FA : 1999 

Design features of Piston Valves:

Materials of Construction :

• Body and Bonnet ASTM A105N / A350 LF2 Forged Steel
• Spindle SS T304
• Ring Valve SS T3016 + Graphite
• Piston SS 17-4 PH
• Spacer CA 40
• Belleville Washer ASTM A231
• Name Plate SS 304