Z643/943 Series Wedge Gate Valve

Z643/943 series electric/pneumatic wedge gate valve, fluid resistance small, sealing surface impact erosion is small, the flow direction of medium does not change, not disturbed flow, small pressure drop, open-close torque is small, shorter structure, process performance is good, suitable pressure and temperature range is wide, at the same time, it has since the structure characteristics of tight sealing medium pressure, can easily realize industrial pipeline medium tight shut off and on.

Product Description

Lining Wedge Gate Valve

A Lining Wedge Gate Valve is a type of industrial valve that incorporates a lining or coating on the inner surfaces of the valve body and gate. This lining is typically made from materials resistant to corrosion, erosion, and other harsh operating conditions, providing additional protection to the valve internals and ensuring longevity in challenging environments.

The key components of a Lining Wedge Gate Valve are:

Valve Body: The outer shell of the valve, usually made of a robust material such as carbon steel or stainless steel.

Lining Material: A protective layer applied to the inner surfaces of the valve body. The lining is typically made of materials like rubber, polytetrafluoroethylene (PTFE), or other corrosion-resistant alloys, depending on the specific application requirements.

Wedge/Gate: The gate is a movable element inside the valve that controls the flow of the fluid when lowered or lifted. In a Lining Wedge Gate Valve, the gate is also coated or lined with the same material as the valve body to provide consistent protection.

The primary purpose of using a lining in a Wedge Gate Valve is to safeguard the valve from the effects of corrosive fluids, abrasive particles, or other aggressive substances present in the process media. By protecting the valve's internal components, the lining helps prevent premature wear and damage, ensuring the valve operates smoothly and efficiently over an extended period.

Advantages of Lining Wedge Gate Valves:

Corrosion Resistance: The lining protects the valve's internal surfaces from chemical attacks, making it suitable for handling corrosive fluids and gases.

Erosion Resistance: The lining material helps to mitigate the effects of erosion caused by high-velocity flows or abrasive particles in the media.

Extended Valve Life: With enhanced protection against corrosive substances, the valve can have a longer service life, reducing downtime and maintenance costs.

Reliable Shut-Off: The wedge design of the gate provides a tight seal, ensuring effective shut-off and minimal leakage when the valve is fully closed.

Lining Wedge Gate Valves are commonly used in industries such as chemical processing, oil and gas, mining, wastewater treatment, and any application where there is a need to handle corrosive or erosive fluids while maintaining reliable shut-off capabilities.

Z643/943 Series Wedge Gate Valve


Nominal SizeDN15~DN1000
Pressure RatingPN6/PN10/PN16;CL150(PN20)
Operateing Temperature-30℃~150℃
CharacteristicsQuickly open
Seat Leakage ClassGB/T13927-2008: D,AA
Body MaterialWCB/WCC/LCB/LCC;WC6/WC9;CF8/CF8M;4A/5A etc.
Trim Material16Mn+ENP+Stellite/304spraying Stellite/304nitriding/304+WC etc.
Seal MaterialPTFE, Flexible graphite