Description

Natural Rubber Pinch Valve: Working, Components, and Applications

A natural rubber pinch valve, also known as a squeeze valve, is a reliable and cost-effective alternative to traditional valve solutions. It offers excellent wear resistance, corrosion resistance, and fatigue resistance, making it ideal for handling abrasive and corrosive materials. In this article, we will discuss how a natural rubber pinch valve works, its components, and applications.

How a Natural Rubber Pinch Valve Works

Pinch valves operates by applying pneumatic or hydraulic pressure to pinch and close a flexible tube (also known as a sleeve) made of natural rubber or other elastomeric material. When pressure is applied, the rubber sleeve collapses, effectively blocking the flow of material through the valve. When pressure is released, the sleeve returns to its original position, allowing for the flow to resume.

Components of a Natural Rubber Pinch Valve

The main components of a sleeves for air pinch valve include:

Body: The valve body houses the pinch mechanism and the rubber sleeve. It is typically made of aluminum alloy, cast iron, or stainless steel for enhanced durability and longevity.

Rubber Sleeve: The rubber sleeve serves as the sealing element and is made from wear-resistant natural rubber, food-grade high-temperature resistant rubber, ethylene-propylene rubber, or other suitable elastomeric materials.

Actuator: The actuator applies pressure to the sleeve for pinch operation. It can be either pneumatic or hydraulic, depending on the specific application.

Flanges: Flanges are used to connect the pinch valve to the piping system. They are compatible with various standards, including EN 1092, ASME Class 150, AS 4087, and JIS 5K/10K.

Applications of Natural Rubber Pinch Valves

Pneumatic pinch valve are widely used for controlling the flow of abrasive, corrosive, and particulate-laden materials in various industries, such as:

Cement and concrete manufacturing
Silo and bulk material handling
Mining and mineral processing
Food and beverage processing
Chemical and pharmaceutical processing

Advantages

Advantages:

Excellent wear and corrosion resistance, making them suitable for abrasive and aggressive applications.
Smooth flow path minimizes clogging and reduces maintenance requirements.
Bi-directional, allowing for flow control in both directions.
Simple design with fewer moving parts, reducing the likelihood of mechanical failure.

Comparison to Other Types of Valves

There are several types of valves available in the market, such as butterfly valves, ball valves, and diaphragm valves. However, natural rubber pinch valves offer unique advantages, particularly for handling abrasive and particulate-laden materials.

Key differences between natural rubber pinch valves and other types of valves include:

Natural rubber pinch valves provide better wear and corrosion resistance, whereas other valve types may require special coatings or lining to handle abrasive materials.
Pinch valves have no moving parts in contact with the process fluid, reducing the chance of mechanical failure, while other valves may wear

Body: Aluminum alloy Cast Iron, Stainless Steel
Pressure: PN6 PN10
Size: 1/2″ -12″ (15mm – 300mm)
Flange accommodation:
EN 1092 PN 6/PN10/PN16
ASME Class 150
AS 4087 PN 10/ PN 16
JIS 5K/10K
Body style: flange
The sealing ring :
wear-resistant natural rubber
natural rubber
food industry of high temperature resistant natural rubber
ethylene-propylene rubber
Ding Qing Nitrile three EPDM, /VITON/FPM Silicone
silicone
fluorine rubber chloroprene rubber /Neoprene
chlorosulfonated polyethylene rubber Hypalon/CSM butyl acrylate /Butyl and other materials such as other material needs please tips.
Applications: cement, silo, sand, mineral materials, limestone, clay, marl, sand, slurry

Features:
pinch valve is mainly the channel smooth, wear resistance, corrosion resistance and fatigue resistance, no pressure loss, no blockage, no leakage, water hammer shock, has good physical and chemical properties. Lining sleeve for ease of replacement, low maintenance cost.

Valves with Actuator
with both pneumatic and electric actuator
with gear operator for actuator
Limit switch box or solenoid valves are available
for high working temperature condition, pov valve will help to build suitable bracket and coupler