Pinch Valve -- Pneumatic & Manual Mining Slurry
Technical Datasheet -- Flexible Sleeve Pinch Valves for Abrasive and Corrosive Slurry
Document No.SV-DATA-PNV-001
RevisionA
DateMay 2026
ManufacturerSupreme Valves India, Ahmedabad, Gujarat, India
Pinch valves for abrasive slurry, mining tailings, cement, powder handling, and wastewater applications. Flexible rubber sleeve is the only wetted part -- no metal components contact the process fluid. Full-bore cylindrical flow path when open provides zero pressure drop and prevents clogging. Tight shutoff even with suspended solids and fibrous material. Pneumatic diaphragm or manual handwheel/lever operation. In-line sleeve replacement without removing valve from pipeline. ISO 16138 compliant.
Technical Specifications
| Parameter | Specification |
|---|
| Product Type | Pinch Valves |
| Category | Pinch Valves |
| Size Range | 1" to 48" (DN25 to DN1200) |
| Pressure Rating | PN10 / PN16 / Class 150 |
| End Connections | Flanged RF / EN 1092-1 PN10/PN16 / ASME B16.5 Class 150, threaded NPT / BSP (small sizes), tri-clamp (sanitary) |
| Body / Casing Material | ASTM A216 WCB / ASTM A351 CF8M (SS316) / Aluminium alloy (lightweight option) |
| Sleeve Material | Natural rubber / EPDM / NBR / Viton (FPM) / Neoprene / Butyl / Food-grade NR / Wear-resistant compound (mining) |
| Sleeve Reinforcement | Multi-ply fabric reinforcement (nylon / polyester / aramid) for pressure rating and abrasion resistance |
| Closing Mechanism | Pneumatic: rubber diaphragm actuator with air pressure 4--6 bar -- Manual: handwheel with screw mechanism or lever |
| Face-to-Face | Manufacturer standard or EN 558 short pattern |
| Operation | Pneumatic (air-to-close or air-to-open) / Manual handwheel or lever / Electric actuator with mechanical pinch mechanism |
| Leakage Class | Zero visible leakage when closed -- sleeve pinches completely shut even with solids present |
| Temperature Range | -20 deg C to +80 deg C (natural rubber) -- up to +120 deg C (EPDM / NBR) -- up to +200 deg C (Viton FPM sleeve on request) |
Materials of Construction
| Component | Material |
|---|
| Carbon Steel | ASTM A216 WCB body/casing (standard industrial) |
| Stainless Steel | ASTM A351 CF8M (SS316) body/casing (corrosive / hygienic service) |
| Aluminium | Aluminium alloy casing (lightweight, portable installations) |
| Sleeve Options | Natural rubber (general), EPDM (water / steam), NBR (oil / hydrocarbon), Viton FPM (chemical / high temp), wear-resistant compound (mining) |
Testing & Inspection
| Test | Requirement |
|---|
| Testing | Hydrostatic shell test 1.5 x WP per API 598 / EN 12266-1; Seat leakage test per API 598 / EN 12266-1; Functional test -- full stroke, torque; Material certificates per EN 10204 3.1 |
| Certification | ISO 9001:2015 QMS, EN 10204 3.1 material certificates, hydrostatic and seat test reports |
Applicable Standards
| Standard | Description |
|---|
| Design Standard | ISO 16138 Industrial Valves -- Pinch Valves, manufacturer's standard |
Notes
- Sleeve material must be specified by the purchaser based on chemical compatibility, abrasion level, and temperature.
- For highly abrasive mining slurry, wear-resistant compound sleeve with multi-ply aramid reinforcement is strongly recommended.
- For pneumatic actuation, confirm available air pressure (4--6 bar typical) and air quality (filtered, lubricated) with the purchaser.
- For high-temperature service (> 120 deg C), Viton FPM or silicone sleeve with SS316 casing is required.
- All valves are manufactured by Supreme Valves India as per our standard specifications.
