Piston/Lift check valve is equipped with a hole plates to control the flows of the Piston. Orifice plates for liquids are much larger than for gases, therefore the piston check valves designed for gas piping system application should not be used for liquids unless the orifice plates in the piston are replaced. Piston check valves are used in large diameter pipelines with low flow rates and in constant flow such as reciprocating compressors and pump outlets. Bolted bonnet piston check valves are small bore check valves, durable, forged and equipped with a bolted bonnet cover design to enable easy maintenance.

PERFECT provides a complete line of Piston/Lift check valve for sale that is supplied to various industries. We are a fully stocked manufacturer and distributor of the piston check valve and we make the valve easy to find for your need. Our bolted bonnet piston check valve is available from 600 up to 2500 pressure. We can also accept the OEM design, so whether you need special valves or have a large order to place, we can provide you with the customized service for you. Please review the charts below for available sizes & pressure & material or fill the contact form below.

Features
  • Easy installation and lower maintenance costs due to the bolted bonnet design;
  • Increased uptime from the use of anti-thrust O-rings in the body-guided disc which eliminates misalignment and galling;
  • Good performance of heavy duty spring providing instantaneous response to system change;
  • Greater process control due to the integral hard-surfaced seat, which allows positive shutoff and seat life
  • Longer service life from positive metal to metal stop design that prevents over-compression of the gasket
Specification

Bolted bonnet piston check valve design
Application Non-Return Flow
Design Standard
  • API 6D
  • ASME B16.34
  • BS 1868
F to F Standard ASME B16.10
Testing Standard API 598
End Connection Standard ASME B16.5
Size
  • NPS 1/2 to 2
  • DN 15 to 50
Pressure Class Range
  • 600 to 1500
  • PN 110 to 260
Ends Flange End, Wafer End
Materials
  • Body: ASTM A216 Gr.WCB, ASTM A352 LCB, LCC, A217WC9, C5, A351 CF8M,CF3, CF3M,CN7M
  • Disc: 13% Cr, 18%Cr8%Ni, Stellite, Monel Alloy20, Bronze, etc
  • Seat-ring: EPDM, Nitrile, PEEK, PTFE, etc

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