PU Lined Elastomer Sleeve Flanged Round Port Manual Handwheel Knife Gate Valve

Ultimate Protection and Isolation for Severe Abrasive Slurries

This specialized knife gate valve is engineered as the definitive isolation solution for processes involving the most aggressive, highly abrasive, and high-concentration slurries. Unlike standard seated valves, this model incorporates a full Polyurethane (PU) Elastomer Sleeve that completely isolates all metallic body parts from the media, providing maximum service life in erosive applications。

The robust Flanged connection ensures superior pipeline integration and structural strength, while the reliable Manual Handwheel provides direct, low-maintenance control. This valve is designed to eliminate common wear and leakage issues associated with traditional slurry valve designs.

Key Features & Extreme Service Advantages

Feature Category	Technical Detail	Extreme Service Benefit
Wear Protection	Full PU Elastomer Sleeve	Unmatched resistance to abrasive wear; the thick, resilient Polyurethane liner completely shields the body from the media.
Sealing Security	Sleeve-to-Gate Sealing	Provides a bi-directional, tight shut-off by compressing the flexible elastomer sleeve around the gate when closed, eliminating particle intrusion into the seal area.
Structure	Flanged Connection	Offers the highest structural integrity and connection strength, ideal for resisting pipe stress and ensuring a secure seal in heavy industrial environments.
Operation	Manual Handwheel Control	Ensures reliable, low-cost, and independent operation without reliance on external power or complex automation systems.
Flow Management	Round Port & Full Bore	The full opening prevents flow restriction, minimizing turbulence and reducing high-velocity localized wear.
Maintenance	Minimal Clogging Design	The sleeve and bonnetless structure prevent solids from trapping the gate, ensuring smooth cycling, even with high-consistency media.

Technical Specifications (Standard Model)

Parameter	Specification Range
Liner Material	Polyurethane (PU) (Optional: Natural Rubber, EPDM)
Connection Type	Flanged (ANSI 150/300 or PN10/16)
Actuation	Manual Handwheel
Stem Design	Rising Stem (Typically)
Body Material	Ductile Iron (Standard), Cast Steel, Stainless Steel
Gate Material	Stainless Steel (SS316) with optional Hard Chrome or Ceramic Coating.
Service Media	Highly abrasive slurries, mineral concentrates, tailings, and dense media separation (DMS) flows.

Target Industry Applications

This PU-Lined valve is the industry standard for manual isolation in the most challenging applications:

Mining & Mineral Processing: High-velocity, extremely abrasive slurry transport, filter press feed lines, and thickener underflow.
Wastewater Treatment: Isolation of high-grit, dewatered sludge, and abrasive chemicals.
Chemical Processing: Handling corrosive and abrasive catalysts or process fluids.

Need Reduced Effort? For large-diameter valves, we recommend upgrading to a Bevel Gear Operator to leverage the full abrasive resistance of the PU liner while keeping operation simple.