Heavy Duty Pneumatic Actuated Abrasion Resistant Pinch Valve with Rubber Sleeve

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Heavy Duty Pneumatic Actuated Abrasion Resistant Pinch Valve with Rubber Sleeve

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Product Description

Product Overview

Our high-performance Heavy Duty Pneumatic Actuated pinch valve is a 2/2-way valve designed to shut off or control the flow of corrosive, abrasive, or granular media. 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 other components.

Model NO.HRZ-P

ActuatorPneumatic / Manual

ConnectionFlange

MaterialCast Iron

Pressure0 ~ 2.5 MPa

Valve StructureRubber Sleeve

UsageFlow Control

ApplicationIndustrial & Water Industrial

Applicable Industries

Heavy Duty Pneumatic Actuated Pinch Valve

Chemical Industry: Dosing and regulating dyes, pigments, and abrasive slurries.
Food and Beverage: Handling ingredients like flour, cereal, and animal feed.
Pharmaceutical: Controlling flow in sterile environments with a clean path.
Mining Industry: Regulating minerals, ores, and coal during extraction.
Water Treatment: Ideal for managing sludge and limewash suspensions.

Drawings & Dimensions

Technical Specifications

Model	Diameter (mm)	Pressure (Mpa)	Temperature (℃)	A (mm)	B (mm)	C (mm)	D (mm)	Drive Mode
HRZ25-P	DN25	0-2.5	-10 ~ 80	180	190	400	35	Pneumatic
HRZ50-P	DN50	0-2.5	-10 ~ 80	250	240	574	75	Pneumatic
HRZ100-P	DN100	0-2.5	-10 ~ 80	434	340	748	126	Pneumatic
HRZ150-P	DN150	0-2.5	-10 ~ 80	375	430	887	163	Pneumatic
HRZ200-P	DN200	0-2.5	-10 ~ 80	505	509	997	190	Pneumatic
HRZ300-P	DN300	0-2.5	-10 ~ 80	764	655	1243	228	Pneumatic

Materials & Operations

Materials Handled

Liquids & Slurries: Capable of handling suspended solids and viscous fluids.
Powders & Granules: Highly effective for pellets and particulate materials.
Abrasive Media: The rubber sleeve absorbs impact, ensuring a longer service life compared to metal valves.

Production Excellence

Knowledge Center

Pinch Valve vs. Conventional Valves

In conventional valves like ball or gate valves, particles can trap around the disc and cause clogging. In contrast, a pinch valve's rubber sleeve closes around particles and allows them to flow through once opened. The resilient properties of the elastomer ensure slower wear and minimal turbulence.

Key Advantages

Low weight and compact design
No clogging or dead spots
Very fast opening/closing times
Self-cleaning and permanent tight shutoff
Only one replaceable part (elastomer sleeve)

Frequently Asked Questions

Q: What is a pinch valve? A: A pinch valve is a cost-effective solution ideal for shutting off or controlling the flow of abrasive, granular, or corrosive media by using a flexible sleeve.

Q: How does a pneumatic pinch valve work? A: Compressed air is applied to the valve housing, which forces the internal sleeve to collapse and pinch tight, stopping the flow entirely. When air is released, the sleeve's elasticity and fluid pressure reopen the valve.

Q: What are the main selection criteria for these valves? A: Key factors include sleeve material compatibility (Natural rubber, NBR, EPDM, Silicone), operating pressure differentials, and temperature ranges of the application.

Q: Why are pinch valves better for abrasive media? A: Because the rubber sleeve absorbs the impact of abrasive particles and deflects energy back, resulting in much slower wear than metal-seated valves.

Q: What is the typical lead time for orders? A: Standard models are typically ready for shipment in about 15 days, while customized units require between 30 to 45 days depending on the specifications.

Q: Do pinch valves require frequent maintenance? A: No. They are known for low and easy maintenance because they have no mechanical parts like bearings, seals, or packing that require regular replacement. Only the elastomer sleeve may eventually need replacing.