Plug with a shut-off valve quick coupling diagnostic, with thread external NPT, used for measuring pressure in systems hydraulics power. made according to standards ISO 15171-1 and SAE J1502, interchangeable are of couplings other manufacturers. plugs quick coupling with hardened steel, standard mounted are on fixed in system hydraulic, a socket quick coupling remain connected line with pressure gauge. connection socket with a plug should take place only at non-operating system, at the absence pressure or very low pressure a few bar. pressure working for disconnected with socket plug is 400 bar a minimal pressure bursting 1600 bar. pressure working for connected socket and plug, is also 400 bar, whereas minimal pressure bursting to 1300 bar. socket and plug equipped are in valves ensuring Leak-free connection and disconnection and tightness. Ich flat surfaces limit for minimum residual leakage oil and inclusion air for the system (leakage ok. 0.1 ml at disconnection, inclusion air ok. 0.02 ml at connecting). Dla correct operation important is retention purity surface valves. Working pressure: 400 bar. pressure bursting: 1300 bar. Vacuum: for 0.9 bar. Flow rate oil hydraulic at Δp = 3 bar: 4.2. Material: steel galvanized. sealing: NBR. Operating temperature: od -40°C up to +120°C.