Trunnion Mounted Ball Valves By Hawa Valves India Pvt Ltd

# Anti-blow out stem : This part, being assembled from the inside of the bonnet, is shouldered and does not bear the strain on the ball.
# External sealing : Tightness is achieved by O-ring with graphite gasket backup.
# Solid trunnion ball : Working under full rated differential pressure with no displacement of the ball. Reduces seat wearing. Large bushing ensure a longer life.
# Self lubricated bearing : Low and constant torque even at high pressure and for large diameters.
# Seat design : The pressure seal principle of the seat ring, ensures bi-directional Sealing, even at low pressure.The original seat ring design, with piston effect, allows the double in-line sealing (Possibility of bleed valve). Seat pockets are machined in the one-piece body, which ensures a perfect alignment of the seals on the ball. The self-relieving of the body cavity pressure is higher from 0 to 10 % of the upstream Pressure.
# Top Entry design : One-piece body construction with one single sealing joint, not affected by pipe stress. The number of components has been kept to a minimum in order to simplify assembly and minimize spare parts. Simple dismantling of the bonnet gives access to all internals ( possibility to weld the valve in line).