Wegman Valves is constantly pursuing the best service for its customers.If you do not find your answer in this section, please do not hesitate to contact us!
The standard delivery time is in many cases the factory delivery time.
The factory delivery time or lead time depends on several things:
A floating ball valve has fixed seats and a ball that can "floats" between the seats. This movement is initiated by the medium pressure.
A trunnion mounted ball valve has a fixed ball. It is fixated by the trunnions. The seats move towards the ball due to the medium pressure and supported by springs.
Basically valves are made from casting and forgings. With gate, globe & check valves valves are typically forged till 2", from 2" and bigger they are normally made from cast material. For ball valves it is more depandant on the type of construction. Smaller valves can be either cast or forged but with bigger ones the 2 piece desing is cast and the 3 piece desing is made from forged material.
Of course there are exeptions and differenses with specific designs.
A "API 600" check valve does not fully open. The disc does not go out of the flow path. The roung bore is flattened at the top if you look from one side to the other. An API 6D check valve fully open. This is often required to let a pig pass though the valve.
Often called a API 600 check valve but formally this incorrect.
Some times people request a fire safe certified gate, globe or check valve and they specify a metal seated valve. Typically these valves do not have a fire safe certification because they are inherently fire safe as there is no soft sealing parts between the closing member and the seats.
Of course there are the obvious differences in quality but also in performance. We offer a high performance gearbox that significantly reduces the amount of turns, time and force required to open or close a valve.