Product Description

Pinch Valve Product Introduction & Technical Specifications

1. Product Introduction

A pinch valve (also known as a hose pinch valve, tubing valve, or squeeze valve) is a flexible valve that controls fluid on/off or regulates flow by externally squeezing an internal elastic hose (valve sleeve/tubing). It relies on the elastic deformation and reset of the hose to achieve its function.

Its core feature is that the fluid only comes into contact with the elastic hose, while the valve body, actuator, and other components do not directly touch the medium. This structurally avoids common issues with traditional valves such as corrosion, wear, and jamming, making it especially suitable for controlling complex fluids containing particles, high viscosity, or strong corrosives.

2. Technical Specifications

 Nominal Diameter (DN): DN15DN1500 (common range DN25DN300)

 Pressure Rating (PN): PN6, PN10, PN16, PN25, PN40 (mainstream PN10/PN16, low-pressure oriented)

 Working Temperature: -20200 (depending on the hose material)

 Flow Characteristic: Quick-opening

 Leakage Class: Class VI (soft seal, bidirectional zero leakage)

 Connection Type: Flanged, threaded, quick-clamp, ferrule, direct insertion

 Actuation Type: Manual, worm gear, bevel gear, pneumatic, electric, hydraulic

3. Main Component Materials

Valve Body (Frame)

 Cast Steel (WCB/A105): High strength and pressure resistance, for general industrial applications.

 Stainless Steel (304/CF8, 316L/CF3M): Acid and alkali corrosion-resistant, ideal for hygienic and chemical applications.

 Aluminum Alloy: Lightweight and low-cost, suitable for low-pressure and light-load conditions.

 Engineering Plastics (PP, PVC, POM): Strong corrosion resistance at a low cost, for corrosive low-pressure media.

Elastic Hose (Core Component)

 Natural Rubber (NR): Good elasticity, average wear resistance, suitable for neutral water and slurry.

 Nitrile Rubber (NBR): Wear-resistant and oil-resistant, used for mineral slurry and oily wastewater.

 EPDM: Aging and acid/alkali resistant, suitable for general wear-resistant applications.

 FKM/Viton: High-temperature and strong corrosion-resistant, suitable for strong acids, alkalis, and organic solvents.

 Food-Grade Silicone: FDA/USP compliant, odorless, for food and pharmaceutical applications.

 Polyurethane (PU): Ultra-high wear resistance (2-3 times that of natural rubber), for high-wear mineral slurry.

 PTFE Composite Hose: Strong corrosion and high-temperature resistant, for extremely corrosive media.

4. Product Features

 Zero Leakage Sealing: When closed, the flexible hose encapsulates particles and fibrous impurities, achieving dead-angle-free bidirectional zero leakage.

 Full Bore & Low Flow Resistance: When open, the hose fully resets, creating a smooth straight-through flow path with minimal pressure loss and low energy consumption.

 Anti-Clogging & Self-Cleaning: No spool or seat obstructions, allowing media to flow freely without residue or scaling.

 Media Isolation Protection: The fluid only contacts the hose, protecting the valve body and actuator from corrosion and wear, extending service life.

 Easy Maintenance & Low Cost: The only wearing part is the elastic hose, which is quick to replace without disassembling the pipeline. Maintenance costs are far lower than traditional valves.

 Wide Media Compatibility: Suitable for various complex media including particles, powders, fibers, high-viscosity fluids, strong corrosives, and hygienic-grade materials.