Anti-Lock Shunt Gate Valve

The Anti‑Lock Shunt Gate Valve is a specialized industrial valve integrating anti‑blockage shearing and flow‑diversion functions,designed for pipelines handling fibrous,viscous,or solids‑laden media(e.g.,sludge,pulp,slurry,wastewater).It combines the features of a knife gate valve and a shunt valve,enabling reliable isolation,diversion,and anti‑clogging performance in demanding conditions.

1.Core Design&Construction

Body:Wafer/flanged connection,short‑body compact design(ductile iron,carbon steel,stainless steel)for easy installation and space savings.

Anti‑Lock Jaw Gate:Sharp,thickened knife‑edged gate(304/316 SS)with a self‑cleaning guide slot;shears fibers,rags,and solids to prevent jamming or locking during operation.

Shunt Structure:Built‑in bypass/shunt port allows partial flow diversion or pressure balance,avoiding pipeline overload and improving system flexibility.

Sealing:Bidirectional soft seals(EPDM/FKM/PTFE)or metal seats;replaceable seals for easy maintenance and long‑term tight shut‑off.

Actuation:Manual handwheel/gear,or electric/pneumatic actuator for automated remote control(customizable for frequent operation).

2.Working Principle

Full Close:The jaw gate descends vertically,shearing debris and sealing tightly against seats to block main flow.

Full Open:Gate retracts fully,creating a straight,unobstructed full‑bore path with minimal pressure drop.

Shunt Mode:The built‑in shunt port opens independently to divert partial flow for sampling,pressure relief,or branch supply—without interrupting mainline operation.

Anti‑Lock Mechanism:The sharp gate edge cuts through tangled fibers/solids during each stroke,preventing debris accumulation and gate locking.

3.Key Features

Anti‑Clogging&Anti‑Locking:Jaw‑type shearing gate eliminates jamming from fibrous/abrasive media;self‑cleaning design reduces maintenance.

Dual‑Function(Isolation+Shunt):Combines shut‑off and diversion in one valve,simplifying piping and reducing costs.

Bidirectional Sealing:Seals reliably in both flow directions,allowing flexible installation.

Full‑Bore Flow:Straight‑through passage minimizes pressure loss and supports pigging.

Robust&Durable:Heavy‑duty materials and wear‑resistant seats ensure long service life in harsh media.

4.Applications

Wastewater&Sewage Treatment:Sludge,sewage,gritty water,and fibrous wastewater.

Pulp&Paper Mills:Paper pulp,black liquor,and fiber suspensions.

Mining&Minerals:Tailings,slurry,and coal ash handling.

Chemical&Process Industries:Viscous fluids,slurries,and corrosive media.

Power Plants:Fly ash,bottom ash,and cooling water with suspended solids.

5.Material Options

Body:Ductile Iron(DI),Carbon Steel(WCB),Stainless Steel(CF8/CF8M).

Gate:304/316 Stainless Steel,Hardened Steel.

Seals:EPDM(‑20°C to 120°C),FKM(‑20°C to 200°C),PTFE(‑20°C to 260°C),Metal Seat(high temp/pressure).

6.Standards

Design:MSS‑SP81,JB/T 8691,ISO 5752.

Flange:GB/T 9113,ANSI B16.5.

Pressure:PN10/PN16,Class 150.

Summary

The Anti‑Lock Shunt Gate Valve is a cost‑effective,multi‑purpose solution for anti‑clogging isolation and flow diversion in media with fibers,solids,or viscosity.Its compact design,reliable shearing action,and integrated shunt function make it ideal for wastewater,pulp&paper,mining,and power industries.