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Forged Gate Valve

Forged gate valves are maily used for high-temperature, high-pressure applications such as boiler, petroleum, chemical, metallurgy, energy systems and critical power-industry etc.

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Description

Forged gate valves are maily used for high-temperature, high-pressure applications such as boiler, petroleum, chemical, metallurgy, energy systems and critical power-industry etc.

The range of GZP Forged steel gate valves design is as follows:

● Size: 1/2” to 2” DN15 to DN50

● Pressure: Class 150lb to 2500lb PN16-PN420

● Connection ends: Socket weld end to ASME B16.11
Screwed end (NPT,BS[) to ANSI/ASME B 1.20.1/BS21

Butt weld end (BW) to ASME B 36.10

Flanged end (RF, FF, RTJ) to ASME B 16.5

● Temperature: -50℃ to 600 ℃

GZP valves can be manufactured in all kinds of materials to meet different requirements from clients, especially in NACE standard.

GZP valves can be equipped with gear operator, pneumatic actuators, Hydraulic actuators, Electric actuators, bypasses, locking devices, chainwheels, extended stems and many others are available to meet the customers’ requirements.

Forged flanged gate valve

MATERIAL GRADES	A105N, F316, F316L, A 20, Hastelloy C, and other exotic materials
TRIM MATERIALS	Trim 5, 8, 12, 16, & Special Materials
DESIGN	Metal-Seated-Design
BONNET DESIGN	Bolted Bonnet & Welded Bonnet
PORTS	Standard & Full
PACKING & GASKET	Graphite (Low Fugitive Emissions)
END CONFIGURATIONS	Raised Face & RTJ
FEATURES	NACE Compliant, OS&Y, Rising Stem, Solid Wedge

MATERIAL A105N

CLASS	TEMPERATURE
150#~2500	-50~425 ℃

MATERIAL SS316

CLASS	TEMPERATURE
150#~2500#	-50~600 ℃

A105N MATERIAL LIST

A182-F316 MATERIAL LIST

Forged GATE VALVES THREADED & SOCKET WELDED

SIZE RANGE	1/4” -2”
MATERIAL GRADES	A105N, F316, F316L, A 20, Hastelloy C, and other exotic materials
TRIM MATERIALS	Trim 5, 8, 12, 16, & Special Materials
DESIGN	Metal-Seated-Design
BONNET DESIGN	Bolted Bonnet & Welded Bonnet
PORTS	Standard & Full
PACKING & GASKET	Graphite (Low Fugitive Emissions)
END CONFIGURATIONS	Threaded, Socket Weld,& Threaded X Socket Weld
FEATURES	NACE Compliant, OS&Y, Rising Stem, Solid Wedge

CLASS	TEMPERATURE
800#~1500#	-50~600 ℃

A105N MATERIAL L

SS316 MATERIAL

How to Tell If a Gate Valve is Open or Closed

Unlike with certain other flow valve types, it is not always easy to tell whether a gate valve is open or not. Ball valves and butterfly valves, for example, will usually be closed when the handle is perpendicular to the pipeline or flow direction.

Since gate valve wheels sit above or to the side of the pipe and rotate through 360 degrees to open and close, you cannot always tell which position they are in at a glance. In most cases, turning a gate valve anticlockwise will open it, while turning it clockwise will close it. These directions will normally be marked on the handwheel or elsewhere on the outer body of the valve.

Unless you know for a fact that a gate valve is jammed or bound, you should always stop turning them when you start to feel significant resistance. Continuing to turn a gate valve against resistance can damage it, or the plumbing or ducting it is installed on. It may therefore be necessary to try turning a gate valve in either direction to ascertain which position it is currently in

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