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Wedge Gate Valve

Description

Wedge gate valve is a linear motion, multi-turn general service valve.

Table of Contents

Gate valve Types as per Type of Closing Element

What is a Wedge Gate Valve?

Types of Wedge Gate Valve

Solid Wedge Gate Valve

Flexible Wedge Gate Valve

Applications of Wedge Gate Valves

Features of Wedge Gate Valve:

Material of Wedge Gate Valve:

ZECO Wedge Gate Valve Licence & Approvals

Gate valve Types as per Type of Closing Element

Parallel disk Gate Valve

Wedge Gate Valve

What is a Wedge Gate Valve?

ZECO wedge gate valve is one of the gate valve types. Wedge gate valves are named because the two sealing surfaces resemble wedges in the body. In general, the two wedge gate valve sealing surface and the Angle of the vertical center line of 2 ° 52 ‘, 3 ’30 °, 5 °, 8 °, and so on. Wedge gate valves can be divided into rising stem gate valve and non-rising stem gate valve according to the stem structure, and wedge gate valve and double disc gate valve according to the gate structure. ZECO is one ofprofessional flexible wedge gate valve manufacturersin China, with nearly 30 years of experience and history in the production of gate valves.

Types of Wedge Gate Valve

Solid Wedge Gate Valve

he solid, or single wedge gate valve is the most widely used and the lowest cost used-type in the process industry for oil, gas and air services. The purpose of the wedge shape is to introduce a high supplementary seating load. Solid-Wedge Gate Valve can be installed in any position, suitable for almost all fluids and practical for turbulent flow services.

In some situations, the valve cannot be reopened until the system temperature reheats the valve; this phenomenon is known as “Thermal blinding”. Wedge gate valves can be further described as inside screw or outside screw patterns. Solid wedge gate valves in waterworks industry are popular as Sluice valves.

Flexible Wedge Gate Valve

The flexible wedge is a one-piece solid disk with a cut around the perimeter. These cuts vary in size, shape, and depth. A shallow, narrow cut on the wedge perimeter gives less flexibility but retains strength. A cast-in recess or deeper and wider cut on the wedge perimeter gives more flexibility but compromises the strength.

This design improves seat alignment and offers better leak tightness. It also improved performance in situations where thermal binding possible. Flexible wedges Gate valves are used in steam systems.

Applications of Wedge Gate Valves

Suitable for general application as on/off and isolation valves, not recommended for throttling and/or regulating purposes. They have excellent resistance to earthquake, shocks, vibration, pressure & strokes and can be operated soundly between -196°C to 595°C.

Features of Wedge Gate Valve:

ZECO wedge gate valve adopts wedge type gate, because the Angle of the gate is wedge type with the vertical center line, it can be closed more and more tightly in the closing process, further ensuring the sealing effect;

ZECO wedge gate valve adopts lifting stem, which can visually see the opening or closing state of the valve from a distance and is easier to judge. The stem and gate are connected by t-groove, and the t-head of the stem is forged as a whole to ensure sufficient connection strength;

ZECO wedge gate valve is designed with a sealed design that allows replacement of the packing when fully open. This design ensures that the packing can be replaced online when it needs to be replaced if the packing is damaged, preventing personnel waste caused by disassembly of the valve;

ZECO wedge gate valve is designed with anti-collision protection on the flange surface when it leaves the factory, which can protect the convex surface connected with the pipe flange during transportation and prevent damage of the valve in collision.

Material of Wedge Gate Valve:

No

Part

Material

1

Body

ASTM A216 WCB

2

Seat Ring

ASTM A105 + 13Cr

3

Wedge

ASTM A216 WCB + 13Cr

4

Stem

ASTM A276 410

5

Bonnet Gasket

Graphite + SS304

6

Bonnet Bolt

ASTM A193 B7

7

Bonnet Nut

ASTM A194 2H

8

Bonnet

ASTM A216 WCB

9

Backseat

ASTM A182 F6a

10

Stem Packing

Reinforced Graphite

11

Handwheel

KTH330-08

ZECO Wedge Gate Valve Licence & Approvals

CERTIFICATE NAME

INSTITUTION

API 600-0351

American Petroleum Institute

API 6D-1225

American Petroleum Institute

ISO 9001:2015

TQCS INTERNATIONAL (GROUP) PTY LTD

ISO 14001:2015

TQCS INTERNATIONAL (GROUP) PTY LTD

ISO 45001:2018

TQCS INTERNATIONAL (GROUP) PTY LTD

Fire Test Certificate API 6FA

TUV SUD SERVICE GMBH

CE-2810

PRESSURE EQUIPMENT DIRECTIVE 2014/68/EU

There are many china globe valve manufacturersin China, but we are one of the best choices for you.

ZECO Valve Group is established in 1991, as an industrial valve manufacturerin Shanghai, China. We have 5 valve factories in China, which are located in Shanghai, Yancheng, and Wenzhou, which mainly produce and supply wedge gate valves, through conduit gate valves, floating ball valves, trunnion mounted ball valves, globe valves, swing check valves, swing check valves, dual plate check valves, and forged steel valves.



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