Manual Wedge Flange Gate Valve

The opening and closing member of the manual wedge flange gate valve is a gate plate, and the movement direction of the gate plate is perpendicular to the fluid direction. The wedge-shaped gate valve can only be fully opened and fully closed, and is not suitable for adjustment and throttling. The wedge gate valve generally opens and closes the valve through the valve stem moving up and down with the rotating handwheel.

Product Details

Product Description

Features

1. The manual wedge flange gate valve has compact structure, reasonable design, good valve rigidity, smooth passage, and small flow coefficient.

2. The sealing surface is made of stainless steel and hard alloy, and has a long service life.

3. Using flexible graphite filler, it has reliable sealing, light and flexible operation.

4. The driving mode is manual, pneumatic, electric, and gear transmission.

5. The structural form is elastic wedge type single gate, rigid wedge type single gate double gate type

Standard

Design specification: GB/T 12234

Structure length: GB/T 12221

Connection flange: JB/T 79.1

Test and inspection: JB/T 9092

Pressure temperature: GB/T 9131

Product identification: GB/T 12220

Specification

Nominal pressure PN (MPa)	Case	Test pressure(MPa)		Upper seal
Nominal pressure PN (MPa)	Case	Seal (liquid)	Sealed (gas)	Upper seal
1.6	2.4	1.8	0.6	1.8
2.5	3.8	2.8	0.6	2.8
4.0	6.0	4.4	0.6	4.4
6.4	9.6	7.0	0.6	7.0
10.0	15.0	11.0	0.6	11.0
16.0	24.0	18.0	0.6	18.0

Material

Case Material	Applicable medium	Applicable temperature (°C)
Carbon steel	Water, steam, oil	≤425
Chrome nickel titanium steel (P type)	Nitric acid	≤200
Chrome nickel molybdenum titanium steel (R type)	Acetic acid	≤200
Chrome molybdenum steel (I type)	Water, steam, oil	≤550

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