PRODUCT OVERVIEW
Gaimi pneumatic diaphragm valve is composed of diaphragm valve and pneumatic actuator. It uses compressed air as power to regulate the flow of fluid medium in process pipeline. It is mainly used to control non corrosive or general corrosive media. The surface of the inner cavity of the valve body is unlined or covered with various optional rubbers. It is suitable for different working temperatures and liquid pipelines. It is widely used in urban construction, chemical industry, metallurgy, petroleum, pharmacy, food, beverage and environmental protection.
WORKING PRINCIPLE
The closing and opening of Gaimi pneumatic diaphragm valve is realized by the pressure from the pipeline acting on the reinforced rubber diaphragm. When the pressure medium enters the valve control chamber, the diaphragm is pressed down and the valve channel is closed; When the control chamber pressure is discharged to the atmosphere or downstream pipeline, the diaphragm rises and the valve channel is opened. The valve has no valve stem, sealing gasket, directional seat, etc. the moving part in the channel is the diaphragm, so there is no corrosion and locking, and it has higher stability. Various structural forms and control forms can be applied to a variety of fluid control needs.
MAIN TECHNICAL PARAMETERS
Air drive | Compressed air 4-6bar |
Nominal diameter | DN15-200mm |
Nominal pressure | PN0.6-1.6MPa |
Service temperature | ≤85℃、≤100℃、 ≤120℃、≤150℃(as per lining and diaphragm material) |
Connection mode | Flange type |
body material | Carbon steel, cast steel, stainless steel |
Diaphragm material | PTFE、EPDM |
Applicable media | Various water treatment |
Actuator | aluminium alloy |
Installation direction | Any angle |
Optional Accessories | Limit switch, positioner, solenoid valve, pressure reducing valve |
Main performance parameters
Type | Nominal diameter DN(mm) | working pressure(MPa) | Test pressure(MPa) | Test temperature(℃) |
seal up | strength |
G641F-16 | 15-50 | 1.6 | 1.76 | 2.4 | normal atmospheric temperature |
G641F-10 | 65-200 | 1.0 | 1.1 | 1.5 |
MAIN OVERALL CONNECTION DIMENSIONS
Nominal diameter(DN) | H1 | Overall dimension(mm) |
D1 | D | L | n | C | B |
15 | 125 | 65 | 95 | 125 | 4 | 14 | 14 |
20 | 130 | 75 | 105 | 135 | 4 | 14 | 16 |
25 | 145 | 85 | 115 | 125 | 4 | 14 | 16 |
32 | 180 | 100 | 135 | 160 | 4 | 18 | 16 |
40 | 220 | 110 | 145 | 180 | 4 | 18 | 16 |
50 | 250 | 125 | 160 | 210 | 4 | 18 | 18 |
65 | 280 | 145 | 180 | 250 | 4 | 18 | 22 |
80 | 340 | 160 | 195 | 300 | 4 | 18 | 25 |
100 | 370 | 180 | 215 | 350 | 8 | 18 | 25 |
125 | 420 | 210 | 245 | 400 | 8 | 18 | 30 |
150 | 480 | 240 | 280 | 460 | 8 | 23 | 30 |
200 | 625 | 295 | 335 | 570 | 8 | 23 | 35 |