The HJST-011 is a fully automatic pneumatic safety relief valve tester designed for precise performance verification of high-pressure valves (DN15-DN400). It integrates a dual pressurization system (gas/liquid), a hydraulic clamping device (adjustable to 30 tons), and a computer control unit. It supports pressure testing from 0 to 480 bar with an accuracy of up to ±1% F.S.
