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