Piston (Non-Slam) Check Valve

Piston (Non-Slam) Check Valve

Overview

Crown/Crown-Judd (USA) Non-Slam Piston Check Valves utilize a simple design that provides long-term reliability, superior performance, and low operating costs. 

Applications

  • Gas and liquids pipelines
  • Field gathering systems
  • Wellhead injection lines
  • Gas export facilities
  • Product tank farms
  • Chemical processing
  • Gas storage caverns
  • Power generation

Design

  • Axial flow
  • Raised face, butt weld and RTJ ends
  • Simple, dependable design
  • Available for vertical flow-up or down service
  • Helical compression spring is engineered to effect valve closure automatically at zero velocity (before reverse flow begins)

Specifications

Sizes

  • 2” – 12”

Pressure Rating

  • Class 150 to 2500

Materials

A range of materials are available to meet your service-specific requirements, including:

  • Carbon steel
  • Stainless steel
  • Exotic materials available upon request

Compliance/Certifications

  • API 6D 
  • API Q1
  • ISO 9001
  • CSA Z245.15
  • ASME B16.34
  • NACE MR0175/ISO 15156

Temperature

  • -45°C to 204°C/-50°F to 400°F
  • Custom temperature applications available

Options/Accessories

  • Exotic seals
  • Variable cracking pressures
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