Pinch Valve (Closed) 204M

DN	D, mm	D1, mm	L, mm	n-ød
50	165	125	165	4-M18
65	185	145	165	8-M18
80	200	160	200	8-M18
100	220	180	250	8-M18
125	250	210	310	8-M18
150	285	240	375	8-M22
200	340	295	500	8-M22
250	395	350	625	12-M22
300	445	400	750	12-M22
350	505	460	875	16-M22
400	565	515	1000	16-M26
450	615	565	1125	20-M26
500	670	620	1250	20-M26
600	780	725	1500	20-M30

Pinch Valves Model 204M designed for regulating and shutting off the flow of highly abrasive media such as slurries, powders, or coarse-grained substances — including corrosive media.

One of the key advantages of this valve is its two-piece, disassemblable body and a dual-side mechanism for compressing the rubber sleeve. The selection of rubber sleeve materials allows the valve to be used in conditions with a high content of abrasive particles.
In the event of damage to the sleeve, there is no need to replace the entire valve — only the sleeve needs to be purchased and replaced.

Design Features:

Disassemblable body
Stretch straps for sleeve support
Dual-side compression of the sleeve
Quick and easy sleeve replacement

Recommended for Use in:

Chemical industry
(handling corrosive and abrasive materials, transport of powders and solids, disposal of process waste)
Mining and raw material processing
(metal ore slurries, mineral suspensions, quartz sands, flotation/dewatering sludge, abrasive and corrosive media in processing lines)
Wastewater treatment systems
(sludge and sand, raw sewage, lime suspensions, coal sludge transport)
Pulp & paper industry and other sectors dealing with solid-laden or abrasive media

Working Media:

Highly abrasive environments
Chemically aggressive environments
Alkalis
Acids
Water containing abrasive particles
Salt solutions
Coal
Sand
Polar solvents
Silicone oils
Media containing fuel oil, crude oil, gasoline

Body Materials:

🔹 Ductile iron

EN-GJS-400-15 / GGG40

🔹 Carbon steel

A216 WCB (1.0619, GP240GH)

🔹 Stainless steel (corrosion-resistant)

A351 CF8 (1.4308) / AISI 304 / A182 F304 (1.4301)
A351 CF8M (1.4408) / AISI 316 / A182 F316 (1.4401)

🔹 Aluminum

Material of the Elastic Hose (Rubber Sleeve):

Material	Temperature Range	Properties / Applications
EPDM	-50 °C to +130 °C	Weak acids and alkalis, salt solutions, contaminated water, sand, mildly abrasive media
NR (Natural Rubber)	-40 °C to +80 °C	Highly abrasive media, sand-laden water, coal, slurries
NBR (Nitrile Rubber)	-40 °C to +120 °C	Abrasive media, contaminated water, crude oil, fuel oil, gasoline, oils
CSM (Hypalon)	-40 °C to +130 °C	Abrasive and chemically aggressive media, contaminated water
IIR (Butyl)	-50 °C to +130 °C	Abrasive media, polar solvents, silicone oils, contaminated water
NR + Linatex	-40 °C to +85 °C	Very high abrasion resistance, weak acids and alkalis, salt solutions, sand, coal
SBR	-40 °C to +100 °C	Abrasive media, contaminated water, glycols, acetone
FKM (Viton®)	-20 °C to +150 °C	Chemically aggressive media, solvents, high temperatures, abrasive media

Technical Specifications

Technical Drawings and Dimensions

Basic Dimensions Table

Product Description