
Radium Engineering Check Valve - 6AN ORB to 10mm Barb
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Description
Radium Engineering Check Valve - 6AN ORB to 10mm Barb
Application: Universal – fuel, oil, coolant and water lines
Part Type: One-way check valve, 6AN ORB to 10mm barb
Part Number: 20-1534
A one-way check valve permits flow in one direction only. The Radium 20-1534 threads into a 6AN ORB port and provides a 10mm barb outlet, with the flow direction laser etched on the hex.
Inside is a spring-loaded stainless steel plunger with an aerodynamic shape for smooth, laminar flow, sealed with FKM and housed in a lightweight anodised aluminium body. The threaded section is extended 3.4mm compared with a standard 6AN ORB fitting to give the internal valve clearance. Suitable for petrol, ethanol, methanol, diesel, water, coolant, oil and similar fluids.
Key Features
- One-Way Flow: Spring-loaded piston valve permits flow in one direction only
- Port Thread: 6AN ORB (9/16"-18) with FKM O-ring seal
- Barb Outlet: 10mm barb
- Flow Direction Marked: Direction of flow is laser etched on the hex
- Low Cracking Pressure: Opens at just 0.3 psi
- High Holding Pressure: 1000+ psi maximum operating and backflow holding pressure
- Laminar Flow Plunger: Aerodynamically shaped stainless steel plunger
- Fluid Compatibility: Petrol, ethanol, methanol, diesel, water, coolant and oil
What's Included
- Check valve, 6AN ORB to 10mm barb
Important Notes
- Flow is one direction only – check the etched arrow on the hex before installing
- The threaded section is 3.4mm longer than a standard 6AN ORB fitting to clear the internal valve
- Radium specifies the 20-1534 on several of its fuel hangers for pumps without an internal check valve (for example Walbro F90000295 and Ti Automotive E5LM pumps)
Vehicle Fitment
- Universal – see Application
Not sure if this suits your vehicle? Email sales@coore.com.au and our team will confirm fitment.

