Heavy Duty Pneumatic Actuated Abrasion Resistant Pinch Valve with Rubber Sleeve

• Customization: Available
• Media: Granular Solids, Liquids, Slurries and Gasses
• Temperature: -10 ~ 80 ºC
• Model NO.: HRZ-P
• Actuator: Manual
• Connection Form: Flange
• Type: Direct Acting
• Material: Cast Iron
• Pressure: 0 ~ 2.5 MPa
• Valve Structure: Rubber
• Power Supply: Pneumatic Actuated
• Usage: Flow Control
• Standard: GB
• Application: Industrial Usage, Water Industrial Usage
• Transport Package: Exported Standard Packaging
• Specification: 5 ~ 600 mm
• Trademark: HUAYUN
• Origin: China
• Production Capacity: 50000sets/Year

Product Description

High-performance Heavy Duty Pneumatic Actuated Pinch Valve

Our high-performance Heavy Duty Pneumatic Actuated pinch vave is a 2/2-way valve designed to shut off or control the flow of corrosive, abrasive, or granular media. It is manually operated to open or close the valve. In the open position, the valve has no restrictions and allows a wide range of media to pass through the bore. The flexible internal rubber sleeve in the valve keeps the media isolated from the rest of the valve, preventing contamination or damage to the valve's other components.  Designed with advanced technology and robust materials, these valves are cost-effective, reliable, and easy to use, making them desirable in various industrial applications.

Specification

Applicable Industries

1.Chemical Industry: Pinch valves are used for dosing, isolating, and regulating dyes, pigments, additives, fertilizers, and other chemicals. They are also suitable for handling acids, abrasive slurries, and viscous materials. 

2.Food and Beverage Industry: Pinch valves are used in food and beverage processing for handling ingredients like flour, cake mix, cereal, animal feed, and even food waste. Their ability to handle dry powders and liquids makes them ideal for various food applications. 

3.Pharmaceutical Industry: Pinch valves are employed in pharmaceutical processes for dosing, isolating, and controlling the flow of powders, liquids, and other materials. Their ability to provide a clean flow path makes them suitable for sterile environments. 
4.Environmental Technology: Pinch valves are used in wastewater treatment, sewage treatment, and other environmental applications for managing sludge, slurries, and other waste materials. 
5.Mining Industry: Pinch valves are used in mining for isolating and regulating the flow of minerals, ores, coal, and other materials during extraction and processing. 

6.Pneumatic Conveying: Pinch valves are used to control the flow of materials in pneumatic conveying systems, including powders, granules, and other bulk materials.  
7.Water Treatment: Pinch valves are used as shut-off and control valves for various liquids and suspensions in water treatment plants, including limewash.  
8.Other Industries: Pinch valves find applications in various other sectors, including the plastics industry, ceramic industry, construction industry, and more. 

Specific Applications:

Shut-off and Control: Pinch valves can be used for on/off control of flow or for throttling (controlling the flow rate).  
Dosing: They can be used to accurately dispense a specific amount of material.  
Vacuum Systems: Pinch valves are used in vacuum systems to seal off or control the flow of materials.  
Tanker Filling: They are used to control the flow of materials when filling tankers.  
Bagging Machines: Pinch valves can be integrated into bagging machines to control the flow of material into bags.  
Spraying: Pinch valves can be used in spraying applications to control the flow of liquid or powder.  
Silo Applications: They are used in silos for overfill protection, controlling discharge, and other applications. 

Materials Handled

Liquids:
Pinch valves can handle a wide range of liquids, including those with suspended solids, slurries, and viscous fluids.  
Powders and Granules:
They are effective for controlling the flow of powders, granules, pellets, and other particulate materials.  
Slurries:
Pinch valves are well-suited for handling slurries, which are mixtures of solids and liquids.  
Abrasive and Corrosive Media:
Their rubber sleeve construction protects the valve body from damage caused by abrasive and corrosive materials.  
Other Media:
Pinch valves can also handle other types of materials, including sludge, chemicals, food products, and more. 

Drawings & Dimensions

Technical Specifications

(Custom configurations available upon request.)

Product Model	Nominal Diameter  (mm)	Nominal Pressure  (Mpa)	Working Temperature   (℃)	A(mm)	B(mm)	C(mm)	D(mm)	Drive mode
HRZ25-P	DN25	0-2.5	-10 ~ 80℃	180	190	400	35	Pneumatic type
HRZ32-P	DN32	0-2.5	-10 ~ 80℃	210	220	480	45	Pneumatic type
HRZ50-P	DN50	0-2.5	-10 ~ 80℃	250	240	574	75	Pneumatic type
HRZ65-P	DN65	0-2.5	-10 ~ 80℃	300	280	645	98	Pneumatic type
HRZ80-P	DN80	0-2.5	-10 ~ 80℃	350	310	694	106	Pneumatic type
HRZ100-P	DN100	0-2.5	-10 ~ 80℃	434	340	748	126	Pneumatic type
HRZ125-P	DN125	0-2.5	-10 ~ 80℃	460	390	781	142	Pneumatic type
HRZ150-P	DN150	0-2.5	-10 ~ 80℃	375	430	887	163	Pneumatic type
HRZ200-P	DN200	0-2.5	--10 ~ 80℃	505	509	997	190	Pneumatic type
HRZ250-P	DN250	0-2.5	-10 ~ 80℃	625	584	1130	204	Pneumatic type
HRZ300-P	DN300	0-2.5	-10 ~ 80℃	764	655	1243	228	Pneumatic type

Company Profile

Hefei Huayun Machinery Manufacturing Co.,Ltd   

Hefei Huayun Machinery Manufacturing Co.,Ltd, with 15,000m² factory, is a China based company and a key player in the peristaltic pumps and pinch valves market.Our hose pumps and pinch valve are used globally and are known for low energy consumption,low and easy maintenance and exceptional bulit quality.Huayun is the national standard setter of hose pump in China,we have invention patent of hose pumps.We produce a range of different sizes of peristaltic pump and different material of hose for your choice.

Why Choose Us?

Other Products

OEM/ODM capabilities
Strong R& D
Fast shipping & Excellent After-sales Service
Turnkey project solutions

Electric Actuated & Pneumatic Actuated Pinch Valves

Mixers, Dispersers, Bead Mills

Peristaltic Hose Pumps

Paint Production Lines

Knowledge Center

How does a pinch valve work?
The pinch valve diagram below illustrates a pinch valve's important components. Three major components are the housing (labeled D), the sleeve (labeled E), and the end connections (labeled G). The rubber sleeve is fitted into the housing from inlet to outlet and is the only component that contacts the media. The end connections are bolted, screwed, or threaded at each end to provide support and connection to the valve.

Pinch valve operation can be either mechanical or automatic. A mechanical pinch valve is a multi-turn valve, meaning the handwheel (labeled A) turns more than 360° during the opening and closing of the valve. The valve's normal position is open (labeled A). While the handwheel turns, the valve stem (labeled B) lowers. A pinch bar (labeled C) presses against the mid-section of the pinch valve's sleeve until the sleeve is pinched tightly (labeled B) and flow stops. Another mechanical pinch valve design has a lowering pinch bar and a rising pinch bar from the bottom (labeled F).

Automatic pinch valves operate using compressed air, hydraulic fluid, or a solenoid. While the medium operating the pinch valve differs slightly between the three automatic pinch valve types, the result is the same. A pneumatic pinch valve uses compressed air to pinch tight the center of the sleeve. A hydraulic pinch valve uses hydraulic fluid to do the same. Finally, a solenoid pinch valve uses an electric current to control the movement of a plunger that pinches down the sleeve.

Pinch Valve Vs. Conventional Valves

In conventional valves, such as ball valves and gate valves, particles can get trapped around the ball or disc and clog the valve. However, the pinch valve's rubber sleeve closes around and traps particles, ensuring that these particles will flow through the system once the pinch valve opens.
When force is no longer applied to the rubber sleeve, the sleeve's elastic rebounding property, along with the force of the upstream flow, fully opens the valve. The fully opened valve provides free flow passage to the media, preventing the valve from clogging or blockage. When abrasive media strikes the rubber pinch valve sleeve, the sleeve absorbs the impact and deflects its energy back to the media. This resilient property ensures slower wear and longer service life than valves using metal surfaces.

Advantages of Pinch Valves

The Pinch Valve is proven to be the most reliable, cost effective and easy to use valve on the market for some time, in many different applications.
The Pinch Valve does not have any additional parts that will need replacing every so often such as rings, seals and packing etc, giving the Pinch Valve a very good total cost of ownership. Other advantages of the Pinch Valve include: 
· Low & easy maintenance
· Low weight
· No clogging or dead spots
· Compact, simple, robust & straight through design
· Very fast opening/closing times
· Less air consumption
· Self cleaning
· Permanent seal with tight shutoff
· Minimal turbulence & friction
· No mechanical parts, and no bearings, seals or packing required.
· Only one replaceable part (elastomer sleeve)

Selection criteria

Consider the following criteria while selecting a pinch valve for an application:
1. Material:
The valve body material should be lightweight for easy handling. The material does not need to be compatible with the media since they do not come in contact.
The rubber sleeve should be given careful consideration because it is the only component that comes in contact with the media.
The pinch valve sleeve material may include natural rubber, NBR (nitrile), EPDM (ethylene propylene diene monomer), silicon, food quality rubber, etc.
The material should have good abrasion resistance to avoid damage by the media.
2. Pressure: To prevent a failure to open/close, take the following pressure differentials into account:
Opening: The operating pressure needs to be greater than the control pressure. If the pressure difference is not big enough, the operating pressure will not be able to open the sleeve. Control pressure is typically 0 bar when opening.
Closing: The control pressure needs to be greater than the operating pressure. If the pressure difference is not big enough, the control pressure will not be able to close the valve.
3.Temperature: Ensure that the valve materials can withstand the application's minimum and maximum operating temperatures.
4.Certification: Some applications may require certification for safety and no media contamination (e.g., food grade, drinking water, etc.).

FAQs

Q: What is a pinch valve?
A: Pinch valve is ideal for shutting off or controlling the flow of abrasive, granular, or corrosive media.

Q: How does a pinch valve work?
A: The valve's actuator pushes down at the middle of the sleeve to close the valve. This pinching traps any media still in the middle and stops flow entirely.

Q: What is a pinch valve used for?
A: Pinch valves are suitable for many different applications. Most noteworthy, pinch valves are exceptional at controlling and stopping the flows of abrasive and solid media.

Q: Are you a factory or a trading company?
A: We are a firm factory, located in the capital of Anhui province, China. Customers are warmly welcomed to visit our factory! 
Q: What's the lead time for orders?
A: Standard models will be ship in about 15 days; customized units require 30–45 days. 
Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.