Globe Valves

Globe Valve is wedge disc, Seals surface appears plane or cone, disc make linear motion along the centerline of

valve seat.
The exercise form of valve stem: lift check valve, swing check valve,
Globe Valve means the disc moves along the centerline of valve seat.
According to this exercise way of the disc, valve seat port changes in proportion relationship with the disc stroke.
As the time to open/close the globe valve is short, it can open/close in a short time. It has a very reliable cut-off function. Therefore, the globe valve is suit for the cut off of pipeline fluid.   

 Advantages:
Simple structure, manufacturing and maintenance more convenient; the working stroke is small, open/ close in a short time; good sealing, small friction between the sealing surface, longer life.

Disadvantages:
larger fluid resistance, larger force required to open and close the valve; does not suit for medium flow of partical, viscosity, and easy coking media; poor adjust performance.

Design, manufacture standard:
Stainless check valve design standard: BS1873/BS5352/API 602/ISO 15761/ASME B16.34 GB/T 12224,GB/T 12235
Structure length standard: ASME B16.10
End flange standard: ASME B16.5(for NPS≤24,not include 22),MSS SP-44(for NPS=22)ASME B16.47(for NPS>24)
Butt welding end standard: ASME B16.25
Socket welding end standard: ASME B16.11
Threaded end standard: ASME B1.20.1
Test standard: API 598

Design/produce describe:

Back seal design, the bonnet-bolt connection can be replaced or welded seat, body welding stainless steel or carbide are available and upon request increase soft seal seat ring. The 6D check valves Full bore design get small flow resistance, bonnet sealing: 150LB using strength graphite gasket, 300LB ~ 800LB using stainless steel wound graphite gaskets, above 900LB using the metal gasket ring , pressure self-sealing is available.      
Structure connection form: RF, RTJ flanges, butt welding, socket welding, threaded ends.

Mode of operation: hand wheel, impact hand wheel, gear boxes, electric devices or pneumatic devices.