API Cast Steel Welded Globe Valve

Description
API cast steel welded globe valves are a type of valves used for regulating flow in pipelines, consisting of a movable disk-type element and a stationary ring seat in a generally spherical body. These cast steel globe valves are widely used in those applications requiring throttling and frequent operation.

Application
API cast steel welded globe valves are utilized as regulation and cut-off device in such pipelines as tap water, sewage, construction, petroleum, chemical products, foodstuff, medicine, textile, electricity, ship, metallurgy, energy system, etc.

Advantages
1. Good sealing performance, small friction between sealing faces and long service life.
2. Low opening torque.
3. Simple structure, and convenient installation and maintenance.

Features
1. When starting or stopping API cast steel welded globe valves, the disc stroke is short. Therefore, its height is a bit lower than that of gate valves, but the structure length is longer.
2. Medium passway of this kind of cast steel globe valves is quite zigzag, so the hydraulic resistance is large, leading to big power consumption.
3. When in use, the medium flow direction in API globe valves is unidirectional and its flow direction can not be changed.

Technical Parameters of API Cast Steel Welded Globe Valve

No.	Part Name	Carbon Steel	Stainless Steel	Alloy Steel	Low Temperature Steel
1	Body	A216 GR WCB	A351 GR CF8	A217 GR WC6	A352 GR LCB
2	Seat	A105	/	A182 GR F304	A182 GR F304
3	Disk	A216 GR WCB	A351 GR CF8	A217 GR WC6	A352 GR LCB
4	Stem	A276 TYPE410	A276 TYPE304	A182 GR F22	A276 TYPE 304
5	Bolt	A193 GR B7	A193 GR 8	A193 GR B7	A193 GR 8
6	Nut	A194 GR 2H	A194 GR B8	A194 GR 4	A194 GR B8
7	Back Seat	A182GR F6a	A182 GR F304	A182 GR F304	A182 GR F304
8	Gasket	Graphite+SS304
9	Packing	Graphite
10	Pin	A194 GR 2H	A276 TYPE304	A276 TYPE 410	A276 TYPE 304
11	Packing Bushing	A182GR F6a	A182 GR F304	A182 GR F6a	A182 GR F304
12	Eyebolt	A193 GR B7	A193 GR 8	A193 GR B7	A193 GR 8
13	Eyebolt Nut	A194 GR 2H	A194 GR B8	A194 GR 4	A194 GR B8
14	Gland	A216 GR WCB	A351 GR CF8	A216 GR WCB	A352 GR LCB
15	Bonnet	A216 GR WCB	A351 GR CF8	A216 GR WCB	A352 GR LCB
16	Stem Nut	B148 UNS C95600	B148 UNS C95600	B148 UNS C95600	B148 UNS C95600
17	Handwheel	A197	A197	A197	A197
18	Handwheel Nut	A108 GR 1020	A182 GR F304	A108 GR 1020	A182 GR F304