Swing Check Valve
Overview
Crown/Crown-Judd (USA) Swing Check Valves are designed to provide long-term reliability to ensure safe, dependable operation of pipelines and other systems.
Applications
- Gas and liquids pipelines
- Field gathering systems
- Wellhead injection lines
- Gas export facilities
- Product tank farms
- Pulp and paper mills
- Mining
- Chemical processing
- Gas storage caverns
- Power generation
Design
- Simple, dependable design
- Full bore for passage of pigs
- All industry-standard end connections such as butt weld, raised face, RTJ and threaded-end. Custom configurations available
- Available in flow up or down service
- Wide range of options and accessories
Specifications
Sizes
- 1/2” – 48”
Pressure Rating
- Class 150 to 2500
Materials
- Carbon steel
- Stainless steel
- Exotic materials available upon request
Compliance/Certifications
- API 6A / 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
- Removable seat
- Exotic seals
- Fire-safe designs
- Hydraulic rotary damper
- Counter weights
- Lock open levers
- Worm gear operators
- Conduit clapper
- Stem extensions
- Limit switches
- Pneumatic, hydraulic and electric actuators
- Various gland designs
Literature
Crown / Crown-Judd Swing Check Valve Accessories
Crown / Crown-Judd Swing Check Valves for High-Temperature Service
Crown / Crown-Judd Swing Check Valve API 6A Flanged End
Crown Swing Check Valves ANSI Class Flanged End
Crown-Judd Swing Check Valves ANSI Class Flanged End
Crown Swing Check Valves Threaded End/Socket Weld End ASME B16.11
Crown-Judd Swing Check Valves Threaded End/Socket Weld End ASME B16.11
Crown Swing Check Valves Threaded End/Socket Weld End ASME B16.34
Crown-Judd Swing Check Valves Threaded End/Socket Weld End ASME B16.34
Crown Swing Check Valves Weld End