Electric Knife Gate Valve

An electric knife gate valve is a robust,automated shut‑off valve integrating an electric actuator with a knife‑edge gate,designed for reliable isolation of slurries,viscous fluids,and media containing suspended solids or fibers.It delivers remote,precise on/off control in harsh industrial environments where standard gate or butterfly valves risk clogging or failure.

Working Principle

The valve’s core component is a sharp‑edged“knife”gate driven by an electric actuator via the stem.

Open:The gate retracts fully into the bonnet,creating a full‑bore,unobstructed flow path with minimal pressure drop.

Closed:The actuator drives the gate downward,shearing through solids/fibers and pressing tightly against the seat to form a tight,leak‑proof seal.

Function:Designed for full open/full close isolation only;not for throttling or flow regulation.

Key Features

Superior Shearing&Self‑Cleaning:The sharp stainless‑steel gate cuts through slurries,pulp,and debris,scraping seat surfaces to prevent buildup and clogging.

Compact&Lightweight:Simple,space‑saving structure with low weight for easy installation and maintenance.

Reliable Sealing:Resilient seats(EPDM,PTFE)for bubble‑tight shutoff;metal seats available for high‑temperature or abrasive services.

Electric Actuation:Enables remote operation,automated control,and integration with PLC/DCS systems;reduces manual labor and improves safety.

Wide Material&Size Range:

Sizes:DN50(2″)to DN600(24″),custom sizes available.

Materials:Cast iron,ductile iron,carbon steel(WCB),stainless steel(304/316).

Pressure:PN6/PN10/PN16,ANSI Class 150.

Temperature:−29°C to 425°C(−20°F to 797°F).

Connection Options:Wafer,lugged,or flanged ends for flexible piping integration.

Applications

Ideal for demanding media and industries:

Wastewater Treatment:Sludge,sewage,and gritty water.

Mining&Minerals:Tailings,slurry,and ore‑processing fluids.

Pulp&Paper:Pulp stock,fiber suspensions,and black liquor.

Chemical&Petrochemical:Viscous fluids,slurries,and corrosive media.

Power Plants:Ash slurry,cooling water,and wastewater.

Food&Beverage:Viscous products and waste streams.