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Pneumatic Knife Gate Valve

Size Range:2″ to 24″ (DN50-DN600)

Connection Options:Flanged, Threaded (NPT, BSP), Butt Weld, Socket Weld

Working Pressure:PN6/PN10/PN16

Working Temperature:-29°C to 425°C

Sealing Options:Metal-to-Metal, Resilient Seat, Graphite, PTFE

Manufacturing Method:Cast, Forged, Machined

Applicable Medium:Water, Oil, Gas, Steam, Chemical Fluids

Product Overview

The pneumatic knife gate valve is a space-saving, high-efficiency shut-off solution designed for systems handling slurry, pulp, powders, and other thick or abrasive media. Operated by a pneumatic actuator, it enables quick, remote-controlled operation with minimal manual effort. Its sharp-edged gate cleanly cuts through heavy flow media, ensuring reliable sealing and minimal pressure drop. Ideal for use in industries such as wastewater treatment, mining, paper, and chemical processing, this valve offers fast actuation, low maintenance, and dependable performance in demanding environments.

Product Features

Pneumatic actuator provides fast and reliable on/off operation
Knife-edge gate cuts through slurry, solids, and viscous media
Ensures tight shut-off with low pressure drop
Suitable for automated and remote-controlled systems
Compact design with low operating torque
Available in cast iron, carbon steel, and stainless steel
Designed for frequent cycling and harsh working conditions
Low maintenance structure with long service life

Specification Parameters

◇ Main External and Connection Dimension

PN (MPa)	DN (mm)	L	D	D1	D2	H	N–M
0.6	50	48	140	110	90	335	4–M12
	65	48	160	130	110	363	4–M12
	80	50	185	150	120	395	4–M16
	100	50	205	170	145	465	8–M16
	125	57	235	200	175	530	8–M16
	150	57	260	225	200	630	8–M16
	200	70	315	280	235	750	8–M16
	250	70	370	335	310	900	12–M16
	300	76	435	395	362	1120	12–M20
	350	76	485	445	412	1260	12–M20
	400	89	535	498	462	1450	16–M20
	450	89	590	550	518	1600	16–M20
	500	114	640	600	568	1800	16–M20
	600	114	755	705	670	2300	20–M22
PN (MPa)	DN (mm)	L	D	D1	D2	H	N–M
1.0	50	48	160	125	100	335	4–M16
	65	48	180	145	120	363	4–M16
	80	50	195	160	135	395	4–M16
	100	50	215	180	155	465	8–M16
	125	57	245	210	185	530	8–M16
	150	57	280	240	210	630	8–M20
	200	70	335	295	265	750	8–M20
	250	70	390	350	320	900	12–M20
	300	76	440	400	368	1120	12–M20
	350	76	500	460	428	1260	16–M20
	400	89	565	515	482	1450	16–M20
	450	89	615	565	532	1600	20–M22
	500	114	670	620	585	1800	20–M22
	600	114	780	725	685	2300	20–M27
PN (MPa)	DN (mm)	L	D	D1	D2	H	N–M
1.6	50	48	160	125	100	335	4–M16
	65	48	185	145	115	363	4–M16
	80	50	200	160	135	395	8–M16
	100	50	220	180	155	465	8–M16
	125	57	255	210	185	530	8–M16
	150	70	285	240	210	645	8–M20
	200	70	340	295	265	770	12–M20
	250	70	405	355	320	920	12–M22
	300	76	460	410	376	1150	16–M22
	350	76	520	470	435	1300	16–M22
	400	89	580	525	485	1450	16–M27
	450	89	640	685	545	1650	20–M27
	500	114	715	650	608	1850	20–M30
	600	114	840	770	718	2360	20–M36

Specification Applications

Wastewater and sewage treatment with sludge and slurry media
Mining and mineral processing slurry pipelines
Pulp and paper stock and fibre control systems
Cement and bulk material handling lines
Chemical processing with viscous or solids-laden fluids
Power plants handling ash, fly ash, and by-products
Automated industrial systems requiring fast on/off control

Pneumatic Knife Gate Valve

Product Overview

Product Features

Specification Parameters

◇ Main External and Connection Dimension

Specification Applications

Features

Resources

Links

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