What is the Features of Knife Gate Valve

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What is the Features of Knife Gate Valve?

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Knife Gate Valve Features:

Wafer lug-type body;

Beveled knife on metal or resilient seats;

Self-cleaning mechanism;

Uni-direction and bi-direction design;

Rising stem and non-rising stem;

Optional bolted bonnet design for non-leakage through packing chamber;

Deflection cone for protecting seat ring;

If you want to know more,please enter the following link:http://www.kolink-valve.com/

The pressure valve (gate valve) opening and closing the gate, the gate's direction of motion and flow direction perpendicular to the gate valve can only be fully open and fully closed, can not be adjusted and the throttle. Gate two sealing surface, the most common mode of gate valve sealing surface formed two wedge-shaped wedge angle with the valve parameters, usually 50, the medium temperature is not high, 2 ° 52 '. Wedge gate valve can be made into a whole, called the rigid damper; trace deformation of the gate can also be made ??to improve their craft, to make up for the sealing surface angle deviation in the process, this The gate is called the elastic damper.http://www.zzpv-valves.com

The Alloy Valve Stockist (http://alloy-valves.com) is a great resource for exotic alloy valves, while Wikipedia offers the following explanation for gate valves: The gate valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar, so gate valves are often used when a straight-line flow of fluid and minimum restric­tion is desired. The gate faces can form a wedge shape or they can be parallel. Gate valves are primarily used to permit or prevent the flow of liquids, but typical gate valves shouldn't be used for regulating flow, unless they are specifically designed for that purpose. Because of their ability to cut through liquids, gate valves are often used in the petroleum industry. For extremely thick fluids, a specialty valve often known as a knife valve is used to cut through the liquid. On opening the gate valve, the flow path is enlarged in a highly nonlinear manner with respect to percent of opening. This means that flow rate does not change evenly with stem travel. Also, a partially open gate disk tends to vibrate from the fluid flow. Most of the flow change occurs near shutoff with a relatively high fluid velocity causing disk and seat wear and eventual leakage if used to regulate flow. Typical gate valves are designed to be fully opened or closed. When fully open, the typical gate valve has no obstruction in the flow path, resulting in very low friction loss.

Super duplex gate valves

The Alloy Valve Stockist

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