Cast Steel (ASTM A216 Gr. WCB) Parallel Slide Blow Off Valve With Monel / 18/8% Cr/Ni Stainless Steel (ASTM A351 Gr.CF8) Working Parts Rack and Pinion Operated Flanged BS-10 Table ‘J’ Ends With Operating Key Test Pressure Max. BOP : 350 PSIG Max. Working Temperature : 454°C Test Pressure : 700 PSIG Hyd. Brand- Neta, Qinn, Sant, Atam S.R.Associates Address- 3503, Hauz Qazi, Chawri Bazar, Delhi- 110006 Phone- 011- 49046161, 9968311543, 9953323131 Design Features These Valves embody the advantage and operation of Parallel Slide Valves offering unobstructed straight through full way flow area. The spring sandwiched between the two discs keeps the faces in sliding contact when under zero or low pressure conditions and thus removes any dirt or foreign matter from the contact faces. Effective closure is achieved by the up stream pressure forcing the disc face at the outlet end against its mating body seat. Operating Rack and Pinion arrangement gives full opening with half a turn of the operating key. Safety locking guard feature is incorporated in the gland which prevents the removal of box operating key unless the valve is closed. The pinion is provided with a stop which limits the rotary movement and eliminates straining of the tooth on rack and pinion. Certification IBR Test Certificate in FORM III-C duly signed by the Director of Boilers, Punjab is provided.