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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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