Pneumatic Knife Gate Valve Carbon Steel

Pneumatic Knife Gate Valve Carbon Steel
DN50-DN1200
PN10-PN16
Connection: Wafer, Flange, LUG

What is Knife Gate Valve?

Knife gate valve, also known as knife type gate valve ,is suitable for pipelines with suspended particles, fibrous materials, pulp, sewage, coal slurry, ash and slag cement mixture and other media. Cut off these media. There is actually no cavity in the valve body, the gate rises and falls in the side guide groove, and is pressed against the valve seat by the bottom lug. If a higher medium sealing performance is required, the O-ring sealing valve seat can be selected to achieve Two-way sealing. According to the driving mode, it is divided into manual knife gate valve, pneumatic knife gate valve and electric knife gate valve.

Knife gate valve is light and flexible in operation, small in size, smooth in passage, small in flow resistance, light in weight, easy to install, easy to disassemble, nominal size DN50~DN1200, can work normally under the condition of working pressure 0.6MPa~1.6MPa and operating temperature ≤100℃ Work. The gate of the knife gate valve has a shearing function, which can scrape off the adhesive on the sealing surface and automatically remove the sundries. Stainless steel gates prevent seal leakage caused by corrosion.

Features

The ultra-short structure length saves materials and can greatly reduce the overall weight of the piping system.

It occupies a small effective space, can effectively support the strength of the pipeline, and can reduce the possibility of pipeline vibration.

The gate is made of austenitic stainless steel, which greatly improves the corrosion resistance and can effectively prevent the seal leakage caused by the corrosion of the gate.The upper sealing packing is made of flexible PTFE, which is reliable in sealing and easy and flexible in operation.

The gate has the function of a knife, which can effectively cut off all kinds of sundries in the medium.

Knife Gate Valve Main Parameter Specification

Nominal Pressure（MPa)	Shell Test（MPa)	Seal Test（MPa)	Working Temperature	Application
1.0 1.6	1.5 2.4	1.1 1.8	≤100℃ ≤100℃	Pulp, sewage, coal slurry, ash, slag-water mixture

Knife Gate Valve Main Materials

Body/Bonnet	Gate	Stem	Sealing
Stainless Steel, Carbon Steel,Cast Iron	Stainless Steel	Stainless Steel	Rubber, PTFE, Stainless Steel, Carbide

Knife Gate Valve Main Dimension

Pa	DN	L	D1	D2	H	n-M	MPa	DN	L	D1	D2	H	n-M
0.6	50	43	90	110	475	4-M12	1.0	50	43	100	125	475	4-M16
	65	46	110	130	500	4-M12		65	46	120	145	500	4-M16
	80	46	125	150	535	4-M16		80	46	135	160	535	4-M16
	100	52	145	170	605	4-M16		100	52	155	180	605	8-M16
	125	56	175	200	665	8-M16		125	56	185	210	665	8-M16
	150	56	200	225	765	8-M16		150	56	210	240	765	8-M20
	200	60	255	280	880	8-M16		200	60	265	295	880	8-M20
	250	68	310	335	1020	12-M16		250	68	320	350	1020	12-M20
	300	78	362	395	1220	12-M20		300	78	368	400	1220	12-M20
	350	78	412	445	1375	12-M20		350	78	428	460	1375	16-M20
	400	102	462	495	1560	16-M20		400	102	482	515	1560	16-M22
	450	114	518	550	1720	16-M20		450	114	532	565	1720	20-M22
	500	127	568	600	1870	16-M20		500	127	585	620	1870	20-M22
	600	154	670	705	2220	20-M22		600	154	685	725	2220	20-M27
	700	165	775	810	2570	24-M22		700	165	800	840	2570	24-M27
	800	190	880	920	3030	24-M27		800	190	898	950	3030	24-M30
	900	203	980	1020	3430	24-M27		900	203	1005	1050	3430	28-M30
	1000	216	1080	1120	3470	28-M27		1000	216	1110	1160	3470	28-M30
	1200	254	1295	1340	4230	32-M30		1200	254	1325	1380	4230	32-M36