Pneumatic Vacuum Butterfly Valve
Pneumatic Vacuum Butterfly Valve
Nominal Pressure: 2x105 ~ 1.3x10-5
Body Material: Stainless Steel 304, 316, 316L
Applicable Temperature: Nitrile Rubber-25～+80℃,Fluorine Rubbe-30～+150℃
Applications: Vacuum Systems, Air and Non-corrosive Gases
Product Characteristics: Sealing Performance is good, can be used in vacuum state, can also be used in low pressure state
First, Pneumatic High Vacuum Butterfly Valve Overview
Pneumatic high vacuum butterfly valve refers to the pressure below standard atmospheric pressure, the formation of a certain vacuum valve is used to adjust the gas flow in the vacuum system, the on and off of the pipeline components, generally used for the control of air and non corrosive gases. The valve plate of the pneumatic vacuum butterfly valve adopts a clamping structure to clamp the sealing ring of the valve plate, and the leakage amount is zero, and can be used in the low pressure state except for the vacuum state. Pneumatic vacuum butterfly valve is driven by compressed air driven disc rotation openedclosed, which can turn on or cut off the airflow in the pipeline, divided into double and single acting, single acting with spring reset function, automatic reset in fault.
Two, Characteristics of Pneumatic High Vacuum Butterfly Valve
1, Bearings using self-lubricating bearings, small friction resistance.
2, The butterfly plate sealing ring can be replaced without removing the valve from the pipeline.
3, The valve can be two-way cut-off of the media, to achieve reliable sealing, two-way zero leakage.
4, The shaft seal adopts the special structure with automatic compensation to cut off the connection between the outside atmosphere and the pipeline, so as to ensure the vacuum of the pipeline.
Three, Technical Parameters Of Pneumatic High Vacuum Butterfly Valve
| Applicable Scope(Pa) | 2x105～1.3x10-5 |
| Leak Rate（Pa.L/S) | ≤1.3x10-6 |
| Driving Form | Compressed Air（4-7bar） |
| Medium Temperature(℃) | Nitrile Rubber-25～+80℃,Fluorine Rubbe-30～+150℃ |
| Flange Standard | GB6070.3-85 |
| Installation Position | Arbitrarily |
| Action Form | Single Acting Type: Gas Closed Type (B) - Air Loss Valve Position (FO); Gas Open (K) - Air Loss Valve Position (FC) Double Acting Type: Gas Closed (B) - Valve Position Holding (FL) When gas lost; gas open (K) - valve position holding (FL) when lost air |
| Control Mode | Switch Mode (Switch two position control) |
| Regulated Type (4-20mA Signal Regulates flow rate) |
Four, Pneumatic High Vacuum Butterfly Valve Actuating Mechanism
| Actuator Type | GT, AT and AW Series Single and Double Acting Pneumatic Actuators |
| Gas Supply Pressure | 0.4～0.7MPa |
| Air Connection | G1/4"、G1/8"、G3/8"、G1/2" |
| Ambient Temperature | -30～+70℃ |
| Action Form | Single Acting Actuator, Double Acting Actuator |
| Optional Accessories | Positioner, Solenoid Valve, Air Filter Pressure Reducer, Retaining Valve, Stroke Switch, Valve Position Conveyor, Hand Wheel Mechanism, etc. |
Connecting Dimensions Of Pneumatic High Vacuum Butterfly Valve
| Nominal Diameter(DN) | 50 | 63 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 400 | |
| Connection Size | A | 26 | 32 | 35 | 50 | 55 | 60 | ||||
| ΦD | 110 | 130 | 145 | 165 | 200 | 225 | 285 | 335 | 425 | 510 | |
| ΦB | 90 | 110 | 125 | 145 | 175 | 200 | 260 | 310 | 395 | 480 | |
| n-ΦC | 4-Φ9 | 8-Φ9 | 4-Φ12 | 12-Φ11 | 12-Φ14 | 16-Φ14 | |||||
Product Use
Pneumatic valve actuator is important in industrial automation control system, remote centralized control can meet the needs of computer program; now widely used in petroleum, chemical industry, gas equipment, nuclear power equipment, water treatment, air conditioning, iron and steel metallurgy, industrial furnace, canned equipment, brewing equipment, drying equipment vacuum equipment, surface treatment, bio pharmaceutical, food machinery, textile, papermaking and other industries, the preferred product is construction of national defense construction, science and technology.
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