Double Block & Bleed Valve
1.It is a combination of needle & manifold valves thus redusing the number of joints.
2.Spindle : ground and thread rolled.stem tip 17-4ph for long life.
3.Dust cap protects stem threads from external contamination leak tight seal with low operating torque heat code traceability ball hard chrome plated for smooth opertions.
1. Hydrostatic shell test is performed at 1.5 times the working pressure.
2. Standard Test : each valves is tested with nitrogen at 1,000 psi for seat & packing leakage, with a max. Allowable leak rate of 0 .1 std. Cm3 / min.
3.Optional test are available upon request
Hydro Tests :
1. Performed with pure water at 1-1/2 times of the working pressure.
1.Molybdenum disulphide (mos2).
Technnical specifications :
1.Working Pressure : 6000 psi (410 bar)
2.Stem Packing : PTFE, Grafoil.
3.Panel mounting on request all valves are 100% factory tested prior to shipment
4.End Connection : bspp,jic,sae,npt,bspt
5.Material of Construction : SS 316, SS 304, C.S, F11, Hastelloy, Monel