API Cast Steel Gate Valve: 

>> Standards

API 6D   Pipeline valve

JB/T 5298 Steel flat gate valve for pipeline

ANSI B16.5a  Pipe flange and flanged fitting

JB/T79.1-79.2 Integral casting steel pipe flange

GB/T13927  Pressure test of general valve

JB/T9092  Valve inspection and test

JB/TQ814  Product quality class of steel flat gate valve

>> Pressure

Class 150-Class1500

Bolted bonnet

Flexible wedge gate

8" and above: split type yoke

Class900,16"and above

Class1500,12"and above

Gear operated

>> Actuation

Hand wheel, impact hand wheel & gear box is usually used for gate valve actuation.

Chain wheel and electric actuator can be also used for gate valve actuation if being requested by the customers.

>> Body & Bonnet Connection

Class150 ~ Class900: The body and bonnet of Class150 ~ Class900 globe valves are usually with studs and nuts.

Class1500 ~ Class2500: The body and bonnet of Class1500 ~ Class2500 globe valves are usually of pressurized seal design.

>> Gasket Of Cover Flange

Class150 ~ Class300: Stainless Steel + Flexible Graphite Wound Gasket

Class600: Stainless Steel + Flexible Graphite Wound Gasket / Ring Joint Gasket

Class900: Ring Joint Gasket

Class1500 ~ Class2500: Pressurized Seal Design

>> Features Of Gate Valve

Bolted Bonnet

Outside Screw & Yoke

Rising Stems

Metallic Seating Surfaces

>> Stem Design

Our valve stems is integral forged design. The minimum diameter of our valve stem is according to standard requirements.

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