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PZ673H Pneumatic Knife Gate Valve

Product overview

Product model: PZ673H
Nominal diameter: DN50~1200mm
Nominal pressure: PN0.6~1.6MPa
Operating temperature: -20~80℃
Body material: carbon steel (C), stainless steel (P4, P6)
Design standard: API 600, API6D, ASME B16.34, GB/T 12234
Structure length: ASME B16.10, API6D, GB/T 12221
Connection standard: ASME B16.5, ASME B16.47, GB/T 9113, JB/T 79, HG/T 20592
Pressure test: API 598, GB/T 13927, JB/T 9092
Pressure-temperature rating: ASME B16.34, GB/T 12224

PZ673H Pneumatic Knife Gate Valve product details

PZ673H Pneumatic Knife Gate Valve basic information
PZ673H pneumatic knife gate valve produced and sold by Baigang Valve Group is one of the important varieties of production process control valves.The solenoid valve can complete the switch control, and the electric valve positioner can also complete the adjustment control.Users can choose according to actual needs.The main body is made of cast steel, stainless steel, etc.It is especially suitable for 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


PZ673H Pneumatic Knife Gate Valve characteristic
1. The valve adopts the integral design, the fluid resistance is small, the operation is flexible and convenient.
2. Manual knife gate valve screw transmission adopts double plane bearing design, making the transmission friction force greatly reduced, thus the valve opens easily and smoothly.
3.Knife gate valve sealing seat adopts movable seal, and the use of O-ring pre-tightening to provide pre-tightening force to seal seat close to the valve disc, the leakage is greatly reduced, the wear of sealing pair in long-term use has automatic compensation function to improve the service life.
4. Fixed guide claw, no groove design, not easy to cause media accumulation or blocking.
5. The valve seat can choose the metal hard seal or soft seal according to the needs of the medium and working condition: the gate plate adopts the surface chrome plating or ion nitriding treatment, so that the gate plate is more wear-resistant, the sealing surface service life is longer;Soft seal optional PTFE seat or reinforced PTFE seat or EPDM, butadiene rubber, good sealing, corrosion resistance.
6. Medium to adapt to a wide range: good sealing performance and strong economic practicability, operation can be manual, pneumatic, electric, practical range is very wide.


PZ673H Pneumatic Knife Gate Valve scope of application
The knife type pneumatic gate valve is an important actuator in the industrial automation control system. It can be controlled remotely and centrally to meet the needs of computer program control.Nowadays, it is widely used in petrochemical industry, gas equipment, nuclear industry, electric power equipment, environmental protection water treatment, HVAC, iron and steel metallurgy, industrial kiln, canning equipment, brewing equipment, drying equipment, vacuum equipment, surface treatment, biological pharmaceutical, food machinery, textile printing and dyeing, paper making and other industries.


PZ673H Pneumatic Knife Gate Valve main shape and connection dimension


MPa DN L D1 D2 H n-M MPa DN L D1 D2 H n-M
0.6MPa 50 48 90 110 335 4-M12 1.0MPa 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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