high pressure needle valve,Thread:NPT,BSPT,UNEF,PT Material ... 2. Metal-to-Metal Seal, Harden treatment to prevent high temp 2. Packing Cap realize packing outside.3. ... Flat Plate stable bolt are feasible. 3. Bolt in the plate help fix needle valve on it, no ... . Ferrule fittings are used for transferring.6. Highest Pressure: 3000PSI(206BAR) 200°C forged steel high pressure needle valve, hex gauge valve ...