3psi one way check valves
3psi one way check valves
3psi one way check valves
3psi one way check valves
3psi one way check valves
3psi one way check valves
3psi one way check valves
3psi one way check valves

3psi one way check valves

3psi one way check valve

$29.99

Running an open system without pressure and losing coolant?

Well slip this in the overflow tube and voilà; you have mild pressure to keep the fluid in your system. 

In an non pressure system the fluid evacuates due to:

  • excess coolant
  • thermal expansion 
  • excessive flow from higher speeds 
  • blocked and clogged tubes 
  • water pump impeller designed flaws

This handy dandy little check valve will not suck back but it is a great tool for keeping the fluid in for longer.

We make to order. Please allow adequate time for us to build.

Build time estimates [November 2023]

Brass Model Ts 2 months 

Black Model Ts FT 1-3 weeks - RT is 6 weeks

Model As 2-4 weeks

Heater cores 6 weeks

Common street rods 3.75 months

Tricky customs & restorations 4-4.5 months

We appreciate your patience as we continue to recruit and train new fabricators.