Description
Rubber Lined Clamp Valves (also known as manual pinch valves, heavy-duty clamp sleeve valves, or tube clip valves) are robust, full-port isolation valves specifically engineered for handling viscous slurries, abrasive powders, sludge, and corrosive industrial fluids. Utilizing a heavy-duty mechanical clamping mechanism that squeezes an internal reinforced rubber sleeve, these valves deliver bubble-tight, bi-directional shut-off without bringing metallic components into contact with the process medium.
Designed for severe material handling and abrasive lines, these valves operate reliably alongside our industrial butterfly valves and connect securely into industrial piping loops via precision-machined industrial flanges or quick-clamp ends.
Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Nominal Diameter Range | DN25 to DN400 (1" to 16") |
| Nominal Pressure | PN6 / PN10 / PN16 / Class 150 |
| Valve Body Material | Ductile Iron (QT450-10), WCB (Carbon Steel), Cast Aluminum, Stainless Steel (CF8 / 304 SS) |
| Rubber Sleeve Material | Natural Rubber (NR), EPDM, NBR (Nitrile), FKM (Viton), Food-Grade Silicone |
| Operation Type | Handwheel Manual Clamping / Gear Operated / Bevel Gear Mechanism |
| Working Temperature | -20°C to 120°C (-4°F to 248°F, depending on rubber sleeve elastomer) |
| Connection Standard | Flanged Ends (ASME B16.5 Class 150, EN 1092-1, DIN) / Quick-Clamp Connection |
| Testing & Inspection | 100% Sleeve Flexure Test & Shell Hydrostatic Pressure Test |
Key Features & Mechanical Clamping Mechanics
Mechanical rubber lined clamp valves offer exceptional durability and simplicity in aggressive industrial environments:
- 100% Full-Port Unobstructed Flow: In the fully open position, the sleeve geometry matches the internal pipe diameter, minimizing head loss, turbulence, and clogging.
- Zero-Leakage Mechanical Shut-Off: The heavy-duty dual-bar clamping mechanism compresses the flexible rubber sleeve evenly from center-line, forming a tight seal even when closing over suspended solids or fibers.
- Zero Corrosion & Contamination: Fluid media touches only the inner lining of the flexible sleeve, keeping metal handwheels, spindles, and body housings completely isolated from chemical attack and mechanical wear.
Target Applications & Industries
Our rubber-lined clamp valves excel in heavy solids, chemical slurry, and bulk powder handling:
- Mining & Mineral Processing: Ore tailings transport, mineral slurry lines, sand washing, and lime milk distribution.
- Wastewater & Environmental Engineering: Municipal sewage sludge, abrasive grit channels, and industrial effluent management.
- Bulk Material & Powder Handling: Cement, fly ash, dry powder conveying, and ceramic slurry transport.
Frequently Asked Questions (FAQ)
Q1: How do I select the proper rubber elastomer for my clamp valve sleeve?
Choose Natural Rubber (NR) for high physical abrasion and slurry wear; EPDM for hot water, steam, and mild acids; NBR for oil and grease applications; and FKM (Viton) for high chemical compatibility.
Q2: Can the inner rubber sleeve be replaced without buying a new valve?
Yes. The modular design allows easy field replacement of the rubber sleeve, lowering lifecycle maintenance costs and reducing system downtime.
Q3: Does Oucang Valve supply custom flange dimensions or pneumatic/gear operators?
Yes. As a direct manufacturer, Oucang Valve produces manual handwheel, bevel gear, and pneumatic/electric driven clamp valves with ANSI/DIN/JIS companion flanges.
About the Manufacturer: Oucang Valve
Oucang Valve is an ISO-certified direct manufacturer specializing in rubber-lined valves, pinch valves, clamp valves, and forged pipe flanges. Operating our own casting foundry, elastomer vulcanization workshop, and pressure testing laboratory, we supply full material certification and custom OEM engineering for global process projects.
- Core Capability: Precision rubber sleeve vulcanization, severe slurry valve design, custom sleeve production, and rapid direct export.
- Quality Compliance: ASME B16.5, DIN, EN, and ISO standards.
- Factory Inquiry: Contact our engineering sales team for direct factory quotations, elastomer compatibility charts, and 2D/3D CAD drawings.
