Five (5) Premium Medical Grade One-Way Check Valves

Best Deal on shipping!! I ship all items super fast with USPS first class mail with delivery confirmation for U.S residents.

There are 5 top quality One Way Check Valves, This is a MUST have if you are building a Hydrogen Generator.

*Without this check valve to release the pressure, the HHO system might explode due to too much pressure buildup

*The blue side points up to release the pressure which builds up inside the HHO device

*Simply glue it on top of your HHO system

*Guaranteed to release pressure / If not I will accept return for refund

Specifications: 

.124 inch OD  .142 psi 

1 1/8 long       1/2' wide