ANSI Class 150 metal seated WCB Gate Valve

INTRODUCTION

Yuming gate valves are designed, manufactured, and inspected in accordance with relevant US standards (such as the API and ASME series). Their core function is to fully open/close pipeline media. With their structural features of "full-bore flow path, bidirectional sealing, and high pressure resistance," they are widely used in industries requiring adaptation to stringent operating conditions, such as the petrochemical, natural gas, power generation, and water conservancy sectors. They play a particularly crucial role in conveying high-pressure, large-diameter, highly corrosive, or flammable and explosive media.

Design and Manufacturing Standards:
API 6D
API 600
Structure and Dimension Standards:
ASME B16.10
ASME B16.5
Inspection and Testing Standards:
API 598
API 607

DATA

Selection recommendations：

Class	Rated pressure（MPa，20℃时）	Applicable Scenarios	Typical materials
Class 150	1.93	Low-pressure water, steam, and civil gas pipelines	WCB carbon steel, ductile iron
Class 300	5.17	Petrochemical medium and low pressure raw material transportation, urban pipeline network	WCB carbon steel, A351 CF8 stainless steel
Class 600	10.34	High-pressure steam pipelines, process pipelines for oil refineries	WC6 chrome-molybdenum steel, A182 F316
Class 900~2500	15.51~42.03	High-pressure natural gas long-distance pipelines, hydrogenation reaction units	A182 F316L, Hastelloy

NO.	Parts Name	Material
24	Lock Nut	AISI 1035
23	HandWheel	Ductile Iron
22	Retaining Nut	AISI 1035
21	Stem Nut	ASTM A439 D2
20	Nipple	Copper Alloy
19	Bearings	Alloy Steel
18	Yoke	ASTM A216 WCB
17	Gland Flange	ASTM A216 WCB
16	Gland	ASTM A182 F6a
15	Yoke Nut	ASTM A194 2H
14	Yoke bolt	ASTM A193 B7
13	Gland Nut	ASTM A194 2H
12	Gland Eyebolt	ASTM A193 B7
11	Pin	AISI 1035
10	Packing	Flexible Graphite
9	Backseat bushing	ASTM A182 F6a
8	Bonnet	ASTM A216 WCB
7	Gasket	SS316+Flexible Graphite
6	Bolt	ASTM A193 B7
5	Nut	ASTM A194 2H
4	Stem	ASTM A182 F6a
3	Wedge	ASTM A216 WCB+STL6
2	Seat Ring	ASTM A105+STL6
1	Body	ASTM A216 WCB

Application：
Petrochemical: Shut-off valves for long-distance crude oil pipelines (Class 600, WCB carbon steel), inlet and outlet valves for fractionating towers in refineries (Class 900, WC9 chrome-molybdenum steel);
Natural Gas: Shut-off valves for distribution stations in long-distance natural gas pipelines (Class 1500, A182 F316L, resistant to sulfur corrosion);
Power: Gate valves for steam pipelines in thermal power plants (Class 600, WC6 chrome-molybdenum steel, resistant to 450°C);
Water Conservancy: Shut-off valves for trunk lines in large-scale water diversion projects (Class 300, DN 1000, double-disc structure, suitable for large flow rates).

Application