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Pneumatic knife gate valve

Model: PZ673H
Nominal diameter: DN50 ~ 1200mm
Nominal pressure: PN0.6 ~ 1.6MPa
Working temperature: -20 ~ 80 ℃
Body material: Carbon steel, stainless steel P4, P6
Design standards: API 600, API6D, ASME B16.34, GB / T 12234
Construction Length: ASME B16.10, API6D, GB / T 12221
Connection Standards: ASME B16.5, ASME B16.47, GB / T 9113, JB / T79, T 20592
Pressure test: API 598, GB / T 13927, JB / T 9092
Pressure - Temperature class: ASME B16.34, GB / T 12224

[Basic Information]
Pneumatic knife gate valve is one of the important varieties of the production process control valve. Equipped with a solenoid valve to complete the switch control, with electrical valve positioner can also be completed to adjust the control. Users can match the actual needs. The main cast steel, stainless steel and so on. It is particularly suitable for the paper industry, chemical industry, coal, sewage, sugar and other industries.

Connection method	On the folder, lugs
Cylinder form	Double role
control method	Switch type, adjustable type
Air pressure	Double role: 4 ~ 8bar, single role: 5 ~ 8bar
Medium temperature	W1: -40 to 180 W2: -40 to 180 W3: -30 to 425 W4: -40 to 425

[Valve Features]
1, the overall design of the valve, fluid resistance, flexible and convenient operation.
2, manual knife gate valve screw drive with double plane bearing design, making the transmission friction greatly reduced, so the valve open light and smooth.
3, the knife valve seal seat with a movable seal, and the use of O-ring preload to provide pre-tightening the seal seat close to the valve, the amount of leakage greatly reduced on the long-term use of seal wear automatic compensation function to improve The service life.
4, fixed guide claws, no groove design, not easy to cause media accumulation or jamming.
5, The valve seat can choose metal hard seal or soft seal according to the requirement of medium and working conditions: The gate adopts the chrome plating or ion nitriding on the surface to make the gate more wear-resistant and the service life of the sealing surface is longer; the soft sealing is optional PTFE seat or reinforced PTFE seat or EPDM, NBR, good sealing, corrosion-resistant.
6, the media to adapt to a wide range: good sealing performance and economic practicality, operation can be manual, pneumatic, electric, practical range is very wide.

[Adaptations]
Knife-type pneumatic gate valve is an important industrial automation and control system executive body, remote control can be centralized to meet the needs of computer-controlled; now in the petrochemical industry, gas equipment, nuclear industry, power equipment, environmental water treatment, HVAC, steel Metallurgy, industrial furnaces, canning equipment, brewing equipment, drying equipment, vacuum equipment, surface treatment, biopharmaceuticals, food machinery, textile printing and dyeing, papermaking and other industries are widely used, but also the national defense construction, construction of science and technology of choice.

[Main shape and connection size]

MPa	DN	L	D1	D2	H	nM	MPa	DN	L	D1	D2	H	nM
0.6 MPa	50	48	90	110	335	4-M12	1.0 MPa	50	48	100	125	335	4-M16
	65	48	110	130	363	4-M12		65	48	120	145	363	4-M16
	80	51	125	150	395	4-M16		80	51	135	160	395	4-M16
	100	51	145	170	465	4-M16		100	51	155	180	465	8-M16
	125	57	175	200	530	8-M16		125	57	185	210	530	8-M16
	150	57	200	225	630	8-M16		150	57	210	240	630	8-M20
	200	70	255	280	750	8-M16		200	70	265	295	750	8-M20
	250	70	310	335	900	12-M16		250	70	320	350	900	12-M20
	300	76	362	395	1120	12-M20		300	76	368	400	1120	12-M20
	350	76	412	445	1260	12-M20		350	76	428	460	1260	16-M20
	400	89	462	495	1450	16-M20		400	89	482	515	1450	16-M22
	450	89	518	550	1600	16-M20		450	89	532	565	1600	20-M22
	500	114	568	600	1800	16-M20		500	114	585	620	1800	20-M22
	600	114	670	705	2300	20-M22		600	114	685	725	2300	20-M27
	700	127	775	810	2500	24-M22		700	127	800	840	2500	24-M27
	800	127	880	920	2800	24-M27		800	127	898	950	2800	24-M30
	900	154	980	1020	3100	27-M27		900	154	1005	1050	3100	28-M30
	1000	165	1080	1120	3400	28-M27		1000	165	1115	1160	3400	28-M30
	1200	190	1295	1340	3600	32-M30		1200	180	1325	1380	3600	32-M36

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