Business License
Contact Us
Your inquiry content must be between 10 to 5000 characters
Please enter Your valid email address
The working principle of gate valves
A gate valve is a type of valve in which the opening and closing element (the gate plate) moves up and down along the sealing surface of the valve seat, driven by a valve stem. This movement allows the valve to either open or close the flow channel through which the fluid passes. When the valve is partially open, vortices are generated on the back of the gate plate, which can cause erosion and vibration of the gate plate itself, as well as damage to the sealing surface of the valve seat. Such damage makes repairs difficult. Gate valves are generally suitable for applications where frequent opening and closing are not required, and where the gate plate needs to remain either fully open or fully closed at all times. They are not suitable for use as regulating or throttling devices. The valve body and the valve cover are usually connected using flanges. The cross-sectional shape of the valve body depends mainly on the nominal pressure: low-pressure valves have a flat cross-section, while high- and medium-pressure valves have an elliptical or circular cross-section.
The sealing ring between the gate plate and the valve seat:
The sealing surface of the wedge-shaped gate plate is inclined relative to the vertical centerline of the gate plate; this angle is known as the wedge angle. This inclination is designed to prevent the gate plate from getting stuck due to temperature changes. The typical wedge angles are 2°52’ or 5°. The higher the temperature of the medium and the larger the diameter of the valve, the larger the wedge angle should be.
Recently Posted
-
How to use a lift-type valve
December 19, 2025The method of using a lift-type valve varies depending on the specific application scenario and type. Preparations before use: Che
Read More -
Principle of lift-type valves
December 19, 2025The lift-type valve is an automatic valve that relies on the flow of the medium to automatically open and close the valve disc, th
Read More -
Sewer valve check valve
December 19, 2025Sewer check valves can effectively prevent the backflow of sewage, the spread of unpleasant odors, and the invasion of mosquitoes,
Read More -
How to install a sewer valve?
December 18, 2025Installing sewer valves requires following specific steps depending on the type of valve (such as check valves, flush valves, etc.
Read More
Contact Us
Recommended Products
-
DIN F4 Flange Gate Valve Cast Iron Body DN50-600 Material GGG40 GG25 GGG50 Resilient Seat for Water Control ApplicationsNegotiableMOQ: 100 Pieces -
ANSI Rising Cast Steel WCB Flange High Pressure Gate ValveNegotiableMOQ: 100 Pieces
-
GOST Hard Seat Cast Iron Gate Valve, DN50-400 Size, PN10/PN16 Pressure, for Water Control ApplicationsNegotiableMOQ: 100 Pieces
-
DIN3352 Compliant F4 Flange Pump Gate Valve PN10/PN16 Cast Iron Body for High Sealing PerformanceNegotiableMOQ: 100 Pieces
-
ANSI DN150 150LB Cast Iron Cast Steel WCB Strainer Flange Y-Type Strainer Stainless Steel Central Heating FilterNegotiableMOQ: 100 Pieces
-
Wide Size Range ANSI Flanged Foot Valve, Ductile Iron, API 598 Tested, for High Sealing PerformanceNegotiableMOQ: 1 Piece
-
Float Valve DN100 PN25 High-Pressure Ball Type Non Return Valve Valvula Check Tipo WaferNegotiableMOQ: 100 Pieces
-
API 598 Certified Cast Steel Globe Valve for Oil/Gas Pipelines, Size 1/2" to 12" 300LB RatingNegotiableMOQ: 1 Piece
-
Industrial Globe Valve Shutoff Valves for ASME B16.5 Flanges Pressure Rated 150LB-300LBNegotiableMOQ: 1 Piece
-
API 6D Certified Globe Valve With ASTM A216 WCB Body and Corrosion-Resistant Stem OptionsNegotiableMOQ: 1 Piece
-
Reliable DIN Cast Iron Globe Valve With Brass Seat, PN16 Pressure Rating, DN50-250NegotiableMOQ: 1 Piece
-
DIN Standard Compliant Globe Valve for Flange Systems, Size Range DN50 to DN250NegotiableMOQ: 1 Piece
-
Durable Cast Iron ANSI Grooved Butterfly Valve, Manual/Worm/Electric Operation, NBR/EPDM Seat OptionsNegotiableMOQ: 1 Piece
-
ANSI Grooved End Butterfly Valve, AWWA C606 Flange Standard, Ideal for Water Treatment ApplicationsNegotiableMOQ: 1 Piece
-
Manual Grooved End Cast Iron Butterfly Valve for Water Fire FightingNegotiableMOQ: 1 Piece
-
AWWA Butterfly Valve Grooved End Butterfly Valve for Industrial Use ANSI Full Lift Safety FlangNegotiableMOQ: 1 Piece
-
Multi-Drive BS 5155 Flange Butterfly Valve for General Industry Applications, DN50 to DN800 RangeNegotiableMOQ: 1 Piece
-
BS 5155 Butterfly Valve Meeting BS4504/EN1092-2 and API 598 StandardsNegotiableMOQ: 1 Piece
-
ANSI B16.1 Compatible Strainer Featuring Ductile Iron Body and Cast Iron Bonnet, Size 1/2"-24"NegotiableMOQ: 1 Piece
-
Industrial-Grade Cast Iron Strainer With SS304 Screen for Pipeline Filtration SystemsNegotiableMOQ: 1 Piece
