A 1-way check valve permits flow in 1 direction only. Radium Engineering check valves feature a lightweight anodized aluminum body with FKM seals and stainless steel hardware.
The check valve is compatible in multiple applications including gasoline, ethanol, methanol, diesel, water, coolant, oil, etc.
20-0534 UNIVERSAL CHECK VALVEAs shown below, the internal plunger's aerodynamic shape warrants a smooth laminar stream.
![](http://www.radiumauto.com/Assets/ProductImages/20-0534_Check_Valve-3.jpg)
As seen above, all female -AN ports can accept 37 degree flare male fittings and/or ORB (O-ring boss) male fittings.
![](https://www.radiumauto.com/Assets/ProductImages/20-0534.jpg)
As depicted below, the flow direction is laser etched on the side of the part.
![](http://www.radiumauto.com/Assets/ProductImages/20-0534_Check_Valve-2.jpg)
In it's native form without adapter fittings, the universal check valve uses a 10AN male outlet and a 8AN female inlet.
![](http://www.radiumauto.com/Assets/ProductImages/20-0534_Check_Valve-1.jpg)
The 20-0534-XX kits below will cover most scenarios. Alternatively, custom adapter fittings for this check valve can be purchased
HERE.
SPECIFICATIONSBody Seal: FKM
Plunger Seal: FKM
Hardware: Stainless Steel
Spring Material: Stainless Steel
Plunger Material: Stainless Steel
Body Material: Anodized Aluminum
Check Valve Type: Spring-Loaded Piston
Large Hex: 30mm (or 1-3/16")
Length, No Adapters: 1.72" (43.6mm)
Cracking Pressure: 0.3 psi @ 70F
Max Operating Pressure: 1000+psi @ 70F
Backflow Holding Pressure: 1000+psi @ 70F
![](http://www.radiumauto.com/Assets/ProductImages/Check_Valve_Test.PNG)
20-0534-06 UNIVERSAL CHECK VALVE KIT, 6AN
The 6AN kit includes the 20-0534 check valve body but adds all the necessary adapter fittings to convert both the inlet and the outlet to 6AN male and/or 6AN female.
![](http://www.radiumauto.com/Assets/ProductImages/20-0534-06.jpg)
Shown below are all of the adapter fitting scenarios for this check valve kit.
![](http://www.radiumauto.com/Assets/ProductImages/20-0534-06_Scenarios.PNG)
SPECIFICATIONS
Body Seal: FKM
Plunger Seal: FKM
Hardware: Stainless Steel
Spring Material: Stainless Steel
Plunger Material: Stainless Steel
Body Material: Anodized Aluminum
Check Valve Type: Spring-Loaded Piston
Large Hex: 30mm (or 1-3/16")
Length, No Adapters: 1.72" (43.6mm)
Cracking Pressure: 0.3 psi @ 70F
Max Operating Pressure: 1000+psi @ 70F
Backflow Holding Pressure: 1000+psi @ 70F
![](http://www.radiumauto.com/Assets/ProductImages/Check_Valve_Test.PNG)
20-0534-08 UNIVERSAL CHECK VALVE KIT, 8AN
The 8AN kit includes the 20-0534 check valve body but adds all the necessary adapter fittings to convert both the inlet and the outlet to 8AN male and/or 8AN female.
![](http://www.radiumauto.com/Assets/ProductImages/20-0534-08.jpg)
Shown below are all of the adapter fitting scenarios for this check valve kit.
SPECIFICATIONSBody Seal: FKM
Plunger Seal: FKM
Hardware: Stainless Steel
Spring Material: Stainless Steel
Plunger Material: Stainless Steel
Body Material: Anodized Aluminum
Check Valve Type: Spring-Loaded Piston
Large Hex: 30mm (or 1-3/16")
Length, No Adapters: 1.72" (43.6mm)
Cracking Pressure: 0.3 psi @ 70F
Max Operating Pressure: 1000+psi @ 70F
Backflow Holding Pressure: 1000+psi @ 70F
![](http://www.radiumauto.com/Assets/ProductImages/Check_Valve_Test.PNG)
20-0534-10 UNIVERSAL CHECK VALVE KIT, 10AN
The 10AN kit includes the 20-0534 check valve body but adds all the necessary adapter fittings to convert both the inlet and the outlet to 10AN male and/or 10AN female.
![](http://www.radiumauto.com/Assets/ProductImages/20-0534-10.jpg)
Shown below are all of the adapter fitting scenarios for this check valve kit.
SPECIFICATIONSBody Seal: FKM
Plunger Seal: FKM
Hardware: Stainless Steel
Spring Material: Stainless Steel
Plunger Material: Stainless Steel
Body Material: Anodized Aluminum
Check Valve Type: Spring-Loaded Piston
Large Hex: 30mm (or 1-3/16")
Length, No Adapters: 1.72" (43.6mm)
Cracking Pressure: 0.3 psi @ 70F
Max Operating Pressure: 1000+psi @ 70F
Backflow Holding Pressure: 1000+psi @ 70F
![](http://www.radiumauto.com/Assets/ProductImages/Check_Valve_Test.PNG)
20-1533 CHECK VALVE, 6AN ORB TO 8.5MM BARBAs depicted below, the flow direction is laser etched on the side of the hex.
NOTE: For internal valve purposes, the length under the threads is extended. This area (shown above) adds an additional 3.4mm when compared to a standard 6AN ORB fitting.SPECIFICATIONSO-Ring Seals: FKM
Plunger Seal: FKM
Hardware: Stainless Steel
Spring Material: Stainless Steel
Plunger Material: Stainless Steel
Body Material: Anodized Aluminum
Check Valve Type: Spring-Loaded Piston
Port Threads: 6AN ORB (9/16"-18)
Compatible Hose ID: 8-9mm (5/16")
Hex Size: 19mm (3/4")
Total Length: 1.4" (46mm)
Cracking Pressure: 0.3 psi @ 70F
Max Operating Pressure: 1000+psi @ 70F
Backflow Holding Pressure: 1000+psi @ 70F
![](http://www.radiumauto.com/Assets/ProductImages/Check_Valve_Test.PNG)
20-1534 CHECK VALVE, 6AN ORB TO 10MM BARBAs depicted below, the flow direction is laser etched on the side of the hex.
NOTE: For internal valve purposes, the length under the threads is extended. This area (shown above) adds an additional 3.4mm when compared to a standard 6AN ORB fitting.SPECIFICATIONSO-Ring Seals: FKM
Plunger Seal: FKM
Hardware: Stainless Steel
Spring Material: Stainless Steel
Plunger Material: Stainless Steel
Body Material: Anodized Aluminum
Check Valve Type: Spring-Loaded Piston
Port Threads: 6AN ORB (9/16"-18)
Compatible Hose ID: 9.5-10.5mm (3/8")
Hex Size: 19mm (3/4")
Total Length: 1.4" (46mm)
Cracking Pressure: 0.3 psi @ 70F
Max Operating Pressure: 1000+psi @ 70F
Backflow Holding Pressure: 1000+psi @ 70F
![](http://www.radiumauto.com/Assets/ProductImages/Check_Valve_Test.PNG)
All tests performed by Radium Engineering in Clackamas, Oregon.