Pneumatic pinch valve Advantages & Types

PARAMETER

ADVANTAGE

Solution for controlling the flow of corrosive, abrasive, and granular media in a variety of industrial applications. Designed to shut off or regulate flow with precision, utilizing pressurized air for effortless operation.

Main property of the sleeve

Rubber quality	Application examples	Temperature range	Typical media
EPDM	Chemical applications: Applicable to 75% of all industrial chemical applications.	-40℃ – ＋110℃	Concentrated and oxidiziing chemicals.
NR	High wear applications.	-40℃ – ＋80℃	Abrasive materials, diluted acids, alkali & chemicals.
NBR	Applications involving oils, fats and hydrocarbon.	-30℃ – ＋100℃	Oil, fats, fuels hydrocarbon, lubricants.
CR	Special-purpse chemical application: Resilient to ozone and averse weather	-40℃ – ＋100℃	Chemicals, acids, several solvents, aliphatic oils, fats, lubricants
IIR	Special-purpse chemical application: Impermeable to gas	-40℃ – ＋100℃	Concentrated and acidic chemicals, vegetable oil.

Sleeve design

Main material of parts

Name	Material
Body	Aluminium alloy, Cast iron, Cast steel, Stainless steel
Sleeve	NR, EPDM, NBR, CR, IIR
Stem	Carbon steel, Stainless steel, Alloy steel
Pinch rod	Ductile iron
Side guide rod	Carbon steel, Stainless steel,
Actuator	Double action or Single action
Acceptable other special requirements of the material

Main dimension (mm)

DN	PN(Bar)	L	L1	L0	D	D1	Z-ɸ	D0	H
25	1-16	145	124	31	115	85	4-14	120	150
32	1-16	160	145	40	135	100	4-18	140	174
40	1-16	180	157	50	145	110	4-18	140	186
50	1-16	210	160	60	160	125	4-18	160	205
65	1-16	250	199	74	180	145	4-18	160	238
80	1-16	300	222	88	195	160	4-18	200	241
100	1-16	350	250	106	215	180	8-18	240	301
125	1-10	430	318	134	245	210	8-18	280	360
150	1-10	500	350	158	280	240	8-23	320	405
200	1-6	645	446	206	335	295	8-23	560	545
250	1-6	800	516	256	395	350	12-23	560	632
300	1-4	940	562	304	440	400	12-23	620	741
350	1-4	840			500	460	16-23		700
400	1-4	915			580	525	16-25		750

Material Options

Our Pneumatic Pinch Valve offers a wide range of material choices to suit your specific needs:

EPDM: Ideal for chemical applications, handling temperatures from -40℃ to +110℃ .
NR: Perfect for abrasive materials, withstanding temperatures from -40℃ to +80℃ .
NBR: Excellent for applications involving oils and hydrocarbons, operational between -30℃ and +100℃.
CR: Designed for special-purpose chemical applications, resistant to ozone and extreme weather, with a temperature range of -40℃ to +100℃.
IIR: Impermeable to gas and ideal for concentrated chemicals, effective from -40℃ to +100℃.

Working principle

The Pneumatic Pinch Valve operates on a simple yet effective principle:

Pressurized air is used to open and close the valve.
In the open position, the valve allows unrestricted flow of a wide range of media through the bore.
The flexible internal rubber sleeve isolates the media from the valve's components, preventing contamination.

Precautions

The rubber sleeve has a limited bearing capacity, so operators should feel a slight resistance when closing the valve.
Avoid using excessive force or additional tools, as this may damage the valve.

Installation Maintenance Operation

The Pneumatic Pinch Valve can be installed anywhere in the pipeline, with no restrictions on flow direction.
Its lightweight design and easy operation make it user-friendly, allowing for quick integration into existing systems.
The valve opens and closes smoothly with the application of pressurized air, providing efficient on/off and throttling control.
Maintenance is minimal, with only the rubber sleeve requiring occasional replacement.

Reliable Performance Across Applications

Suitable for a wide range of media, including slurries and granular products like sand, cement, gravel, textile fibers, carbon, powders, pellets, chippings, and glass fragments.
Ideal for industries such as chemicals, pharmaceuticals, food processing, wastewater treatment, and bulk solids handling.
Delivers consistent performance with minimal pressure drop, ensuring efficient flow control in various applications.

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