Full Bore Ball Valves By Delval Flow Controls Pvt. Ltd.

Key Features

1. Highly smooth surface finish for bubble tight leak tightness and reduced operating torque and extended seat life.
2. Rounded and smooth edges ?CC? to reduce seat wear during rotation of ball over seat. High cycle life.
3. Perfectly spherical, for smooth operation and extended seat life.
4. Hole in the ball stem slot equalizes pressure in the valve body cavity with the line pressure when the valve is in open position. Extends seat and gland life by avoiding undue pressure acting on both components.
5. Seats with pressure relief slots to relieve pressure build up from the valve cavity into the line when the valve is closed. This enhances seat life and gland life.
6. Special ?curved? seat design to balance sealing forces and eliminate squeezing of seat material, which occurs with flat seats supplied by other manufacturers. Seat life is enhanced.
7. Antistatic devices incorporated to ensure grounding of ball with stem and stem with body. Avoids static electricity buildup in valve and explosion/fire hazard.
8. a Blow-out proofa design to ensure no accidental stem push-out takes place under pressure.
9. Stem design is contoured at the stem engagement in body and supported by two bearings to ensure that gaps do not get created due to side loading of stem.
10. Precision machined parts ensure excellent surface contact for sealing on stem packing and O-ring.