PU Lined Elastomer Sleeve Flanged Round Port Pneumatic Actuation Knife Gate Valve

Automated Isolation with Zero-Wear Technology for Severe Service

This valve is the premium solution for automating demanding processes that involve highly abrasive, high-density slurries and corrosive chemicals. It combines the efficiency of Pneumatic Actuation with the unparalleled protection of a Full Polyurethane (PU) Elastomer Sleeve.

The PU liner completely isolates all metallic body components from the flowing media, virtually eliminating wear, erosion, and corrosion caused by aggressive particles. The result is a system that provides rapid, high-cycle automation without compromising structural integrity or service life, secured by a robust Flanged connection.

Key Features & Extreme Automation Advantages

Feature Category	Technical Detail	Core Operational Benefit
Wear Protection	Full PU Elastomer Sleeve	Unmatched resistance to abrasive wear and corrosion; the resilient liner shields the body, drastically extending service life in severe slurry applications.
Automation	Pneumatic Cylinder Actuator	Enables rapid, high-frequency on/off cycling, essential for automated batch sequencing, filter press feed, and quick process control.
Sealing Security	Sleeve-to-Gate Sealing (Bi-Directional)	Provides a reliable, tight shut-off in both directions by compressing the flexible elastomer sleeve around the gate when closed.
Structural Integrity	Flanged Connection	Offers the highest structural strength and security, ideal for resisting pipe stresses and ensuring a reliable, leak-proof seal in automated, high-pressure systems.
Flow Efficiency	Round Port & Full Bore	The full opening prevents flow restriction, minimizing turbulence, head loss, and localized wear.
System Integration	Rising Stem Design (Typically)	Facilitates the easy mounting of limit switches and positioners onto the actuator yoke for accurate feedback to the Plant Control System (PCS).

Technical Specifications (Standard Pneumatic Model)

Parameter	Specification Range
Liner Material	Polyurethane (PU) (Superior Abrasion Resistance)
Actuation Method	Pneumatic Cylinder (Standard Double-Acting)
Connection Type	Flanged (ANSI 150/300 or PN10/16)
Stem Design	Rising Stem (Standard) or Non-Rising Stem (Optional)
Port / Flow	Round Port / Full Bore
Body Material	Ductile Iron (Standard), Cast Steel, or Stainless Steel (Protected by PU Liner)
Gate Material	Stainless Steel (SS316) with specialized finishing for smooth cycling.
Service Media	Highly abrasive slurries, mineral concentrates, mine tailings, dense media separation (DMS), and abrasive chemicals.

Target Industry Applications

This automated, zero-wear valve is critical for maintaining efficiency and safety in the most aggressive fluid processes:

Mining & Mineral Processing: Automated control of high-concentration slurry transfer, filter press feed lines, and flotation circuits.
Chemical Processing: High-cycle isolation of abrasive catalysts, fine powders, and corrosive slurries.
Wastewater Treatment: Automated control of high-grit sludge, dewatering systems, and chemical dosing.

Integration Package: The pneumatic actuator is fully configured for automation. We offer complete accessory packages, including Solenoid Valves, High-Resolution Positioners, and Limit Switch Boxes, for immediate and reliable integration with your DCS or PLC system.