Product
Non Return Valve – PN 400 Screwed Ends
Check Valves allow one-way fluid flow and automatically prevent reverse flow. Factory-set cracking pressures with ball or poppet designs ensure reliable, maintenance-free backflow protection.
Instrumentation Valves
Non Return Valve – PN 400 Screwed Ends
The primary objective of a check valve is to protect process systems by preventing reverse flow, maintaining system integrity, and reducing the risk of equipment damage. By allowing controlled one-way flow and automatic shutoff under backpressure conditions, check valves help ensure safe, efficient, and reliable operation in fluid handling applications. They are widely used in instrumentation, hydraulic, pneumatic, and process control systems where flow direction must be maintained without manual intervention.
- Max working pressure
- up to 6000 psi
- Body materials
- CS, SS 304, SS 316, Duplex, Super Duplex, Inconel 625, Inconel 825, Hastelloy C276
- Thread systems
- NPT, BSPP, BSPT
Features
- One-way flow control with automatic backflow prevention
- Preset cracking pressure for controlled valve opening
- Available in ball and poppet seal designs
- Reliable leak-tight shutoff under reverse pressure
- Compact and robust construction
- Low maintenance and long service life
- Suitable for liquid and gas applications
- Wide range of end connections and materials
- High-pressure capability for instrumentation systems
Applications
- Sampling Systems
- Hydraulic & Pneumatic Systems
- Oil & Gas Processing
- Chemical & Petrochemical Plants
- Power Generation
- Tube OD range
- 1/4 in, 3/8 in, 1/2 in, 3/4 in, 1 in
- Size range
- 1/4 in, 3/8 in, 1/2 in, 3/4 in, 1 in
- Max working pressure
- up to 6000 psi
- Thread systems
- NPT, BSPP, BSPT
- Body materials
- CS, SS 304, SS 316, Duplex, Super Duplex, Inconel 625, Inconel 825, Hastelloy C276
- Temperature
- -29 °C to 232 °C
CS
on requestSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
SS 304
on requestSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
SS 316
standardSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
Duplex
on requestSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
Super Duplex
on requestSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
Inconel 625
on requestSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
Inconel 825
on requestSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
Hastelloy C276
on requestSupplied with EN 10204 3.1 material certification and heat-code traceability to the melt.
Certification pack available on request for this range.
Datasheet
One field. The datasheet (or the family catalogue that includes this model) arrives in your inbox immediately.
Send to a colleagueCAD model (STEP)
Designing our part into your assembly? Request the STEP file and we’ll send it when it clears export screening.
Browse the full resource library