Chaote - Model Q347F -Forged Steel Trunnion Ball Valves

Fixed ball valves are equipped with floating seats. After pressure from the medium, the seat is moved to press the sealing ring tightly against the ball to ensure seal. Generally, bearings are fitted on the upper and lower shafts of the ball, and the operating torque is small, suitable for high pressure and large diameter valves. To reduce the number of ball valve operating torque and increase the reliability of the sealing, appeared in recent years, oil seal ball valve, both betting special lubricant between the sealing surface, in order to form a layer of oil film, which increases the sealing, and reduce operating torque, suitable for high pressure large diameter ball valve.