UTMOST is a pneumatic knife gate valve manufacturer, pneumatic knife gate valve supplier and exporter of pneumatic knife gate valves in China. Our china valve supplier have a team of experienced engineers who have been committed to manufacturing air actuated knife gate valves that are easy to use, safe and fast to operate. The stainless steel gate prevents sealing leakage caused by lame corrosion. The pneumatic operated knife gate valve is suitable for different kinds of control valve solution such as slurry, powder and granular materials, fibers, and other difficult to control fluids, widely used in paper, petroleum, chemical, drainage, food, and other industries.
Valve design and manufacturing: JB/T8691, GB/T12224
The structural length of the valve: GB/T12221
Flange connection size: GB/T9113, HG/T20592
Valve Inspection and testing: GB/T13927, MSSP SP-61
Electric drive device connection size: JBT 8530
The operating temperature of the air-operated knife gate valve depends on the sealing type and valve material.
The pneumatic knife gate valve has the advantages of simple and compact structure, reasonable design, light and material saving, reliable sealing, light and flexible operation, small size, smooth passage, small flow resistance, lightweight, easy installation, easy disassembly, etc. This automatic knife gate valve can work at a working pressure of 1.0MPa -2.5MPa, normal work under the operating temperature of -29- 425C. The pneumatic knife edge gate valve has a shearing function, which can scrape off the adhesion on the sealing surface and automatically remove the debris. The stainless steel gate of the pneumatic operated gate valve can prevent seal leakage caused by corrosion.
Material of Air Operated Knife Gate Valve Main Parts
| Valve body, bonnet | Gate | Stem | Sealing ring |
| Stainless steel, carbon steel, gray cast iron | Carbon steel, stainless steel | Stainless steel | Rubber, PTFE, stainless steel, cemented carbide |
Knife Gate Valve Pneumatic Main Performance Specifications
| Nominal pressure PN | Shell test (MPa) | Seal test (MPa) | Operating temperature | Applicable medium |
| 1 | 1.5 | 1.1 | Rubber≤80°C PTFE seal≤180°C Hard seal≤425°C | Pulp, sewage, coal, ash, slag water mixture |
| Nominal pressure | DN | L | D1 | D2 | H | Z-M |
| 1.0MPa | 50 | 48 | 100 | 125 | 335 | 4-M16 |
| 65 | 48 | 120 | 145 | 365 | 4-M16 | |
| 80 | 50 | 135 | 160 | 395 | 4-M16 | |
| 100 | 50 | 155 | 180 | 465 | 8-M16 | |
| 125 | 57 | 185 | 210 | 530 | 8-M18 | |
| 150 | 60 | 210 | 240 | 630 | 8-M20 | |
| 200 | 60 | 265 | 295 | 750 | 8-M20 | |
| 250 | 70 | 320 | 350 | 900 | 12-M20 | |
| 300 | 76 | 368 | 400 | 1120 | 12-M20 | |
| 350 | 76 | 428 | 460 | 1260 | 16-M20 | |
| 400 | 89 | 482 | 515 | 1450 | 16-M22 | |
| 450 | 89 | 532 | 565 | 1600 | 20-M22 | |
| 500 | 114 | 585 | 620 | 1800 | 20-M22 | |
| 600 | 114 | 685 | 725 | 2300 | 20-M27 | |
| 700 | 127 | 800 | 840 | 2500 | 24-M27 | |
| 800 | 127 | 898 | 950 | 2800 | 24-M30 | |
| 900 | 154 | 1005 | 1050 | 3100 | 28-M30 | |
| 1000 | 165 | 1115 | 1160 | 3400 | 28-M30 | |
| 1200 | 190 | 1325 | 1380 | 3600 | 32-M36 |
