PRODUCT DESCRIPTION

Our Quick Couplers Pressure Test Plugs are a direct connection to the current Daystate fill coupler and our own Quick Coupler Socket as seen in our other listings. They keep the grime and dirt out of the socket protecting your gun from the ingress of nasties, and when used on a charging cylinder enable the quick and safe checking of the air pressure remaining in your cylinder. 

To read the residual cylinder pressure, simply install the plug into the socket, close the bleed valve on the cylinder and slowly open the cylinder air control valve. The pressure inside the cylinder will be indicated on the cylinder valve or charging head gauge. Close the cylinder valve, and bleed the air to release any pressure after testing. 

All of our fittings are safe for use with readily available air sources up to and including 350 BAR (5000 psi).