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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