1、Can be joined under system pressure, and the connection before the steel ball is opened has good sealing performance. 2、Comply with pipe pattern design, can be easily connected with measuring, testing and switching instruments. 3、The metal protective cap is not easy to loosen, no pressure loss and has a long life. 4、The surface and the whole have been treated, with corrosion resistance, heat resistance, and excellent process performance. 5、The adapter is mainly used for pressure monitoring, exhaust and sampling in high/low/negative pressure system. 2 x Hydraulic Test Adapter Item Type: Hydraulic Test AdapterMaterial: Carbon steel, plastic, nitrile butadiene rubberPurpose: Lubrication, exhaust, pressure system, hydraulic system pressure detection and samplingWorking Pressure: 63MPa (630 bar)Burst Pressure: > 2520barWorking Medium: Hydraulic oil and mineral oilWorking Temperature: -30℃～+120℃ nitrile butadiene rubber sealWith Rubber Cap: -30℃～+100℃ Specifications  M1(Head End)  M2(tail end)  PT1  M10 x 1  M12 x 1.25  PT3  M14 x 1.5  M16 x 2  PT5  M12 x 1.5  M16 x 2  PT7  1/4in  M16 x 2