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Cast Steel Globe Valve

1. Product Overview

Cast steel globe valve

A typical cast steel globe valve, API 600, WCB body, 3″ 150LB.

 

Metals Valve’s cast steel globe valves are designed & manufactured according to relative BS, ISO, API and ASMR standards. Globe valves are closing down valves in which the closure member (disc) is moved squarely on and off the seat. It is a linear-motion valve characterized by a body with longer face-to-face that accommodates follow passage sufficiently long enough to ensure smooth flow through the valve without any sharp turns. Cast steel globe valves can be used in both on-off and throttling applications. Because of the short travel of the disc between the open and closed positions and the robust wear-resistant seating design, globe valves are ideally suitable for frequent stroking services. The cast steel globe valves, can be made from various materials covering carbon steel, high-temperature alloy steel, stainless steel, low temperature steel, and special alloys, etc.

2. Design Standards and Design Features

design features of cast steel globe valves

The illustration of design features of cast steel globe valve

Design/Inspection standards: API 6D, API 600, ASME B16.34, BS EN13709, BS 1873, ASME B16.10, ASME B16.5.

(1) Handwheel operated with OS&Y and rising stem.
(2) Gland eyebolts are applied to facilitate packing maintenance and easy dismantling.
(3) Body/Bonnet joint design: male and female matching joint for 150LB~600LB; metallic ring gasket seal for 900LB and above.
(4) T-shaped anti blow-out stem design.
(5) Plug-shaped disc and seating face design allows particular flow characteristic.
(6) Seating surface shall be hardened by stellite 6 overlay.

3. G.A Drawings & Typical Material Selection

G.A Drawings

G.A drawing of cast steel globe valve, BS 1873 / API 602.

G.A drawing of the cast steel globe valve, BS 1873/ API 602.

Typical Material Selection

No.Part NameCarbon SteelAlloy SteelStainless Steel
1BodyASTM A216 WCBASTM A217-WC9ASTM A351 CF8M
2DiscASTM A182 F6aASTM A182-F22/STL.OVERLAYASTM A182 F316
3Disc SleeveASTM A182 F6aASTM A182-F22/STL.OVERLAYASTM A182 F316
4StemASTM A182 F6aASTM A182 F6aASTM A182 F316
5Bellow SealASTM A276 304ASTM A276 304ASTM A276 316
6Bonnet GasketSoft IronSoft SteelASTM A276 316
7BonnetASTM A216 WCBASTM A217-WC9ASTM A351 CF8M
8BoltASTM A193 B7ASTM A193 B16ASTM A193 B8
9NutASTM A194 2HASTM A194 4ASTM A194 8
10PackingSS316+GraphileSS316+GraphileSS316+Graphile
11GlandASTM A182 F6aASTM A276 316ASTM A276 420
12Gland FlangeASTM A216 WCBASTM A216 WCBASTM A351 CF8
13Stem NutASTM A439 D2ASTM A439 D2ASTM A439 D2
14HandwheelDuctile IronDuctile IronDuctile Iron

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Flanged Globe Valve

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