Relief valves that help to protect your plugs from over inflation.

Operator error or malfunctioning gauges can cause plugs to be over-inflated. Installing a Max-Guard relief valve on your PlugTech Plugster, Guzzler, or Tester allows your plug to continue to block flow and hold air again while protecting your plug from being over inflated. Our relief valve is reusable unlike one-time-use burst discs offered by other manufacturers that must be replaced after each use.

Max-Guard relief valves are designed to open at a designated pressure to release excess air pressure helping to avoid over-inflation. Once inflation pressure returns to normal, the valve resets. You may need to reinflate your plug to required inflation pressure after a Max-Guard relief valve has reset.

Max-Guard Specs

Our Max-Guard relief valves are optional on 12”- 18” and 12”- 24” Guzzler and Tester plugs and come standard on all 15”- 30” and larger Guzzler and Tester plugs.