Recently, JONLOO has finished the production for 1500LB globe valves. The valves were designed with throttling function upon customer’s requirement.
JONLOO valves can adopt pressure seal bonnets to allow high-pressure service, typically in excess of 15 Mpa (2250 psi). The main feature about the pressure seal bonnet is that the body-bonnet joints seal improves as the internal pressure in the valve increases, compared to other constructions where the increase in internal pressure tends to create leaks in the body-bonnet joint.
Internal pressure forces the bonnet upwards against the gasket, creating forces in the contact areas between the gasket and the bonnet and between the gasket and the body.
Leaks most commonly arise at the contact surface between the gasket and the body. The area where the body is in contact with the joint is covered by stainless steel, improving surface’s quality and avoiding corrosion issues. Gaskets are carefully designed to produce a tight seal regardless of the line conditions, that can easily be dismantled for maintenance operations.
Each globe valve was given a pressure test three or four times, to ensure zero leaking.
