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Ball valves can be combined with a pneumatic actuator (pneumatic ball valves) or an electric actuator (electric ball valves) for automation and/or for controlling remotely. Depending on the application, automating with a pneumatic actuator vs an electric one may be more advantageous, or vice-versa.
Pneumatic actuators control ball valves by the conversion of compressed air energy to mechanical motion. A rotary mechanical motion is required in a ball valve for a 90 degrees turn. Pneumatic actuator ball valves can be single-acting or double-acting. A single-acting pneumatic actuator uses a single compressed air input to turn the valve and a spring to return the valve to the normal position. A double-acting pneumatic actuator has two compressed air inputs to turn the valve and return the valve to the original position.
| Pneumatic Ball Valve | Electric Ball Valve |
| Air Supply Pressure: 0.4 to 0.8 MPa | Supply Voltage: 12VDC, 24VDC, 24VAC, 110VAC, 220VAC, 380VAC |
| Working Medium: Water, Oil, Air, Gas, Liquid, Steam, etc | |
| Ambient Temperature: -20 to +60 ºC | |
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Medium Temperature: -20 to +180 ºC
UPVC Ball Valve: -10 to +45 ºC
CPVC Ball Valve: -15 to +90 ºC
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| Body Material: Stainless Steel 304, Stainless Steel 316, UPVC, CPVC, Cast Steel | |
| Seal Material: NBR, EPDM, VITON, PTFE | |
| Size Range: DN15 to DN200 | |
| Connection Type: Threaded, Flanged, Tri Clamp, Double Union, Welded | |
| Working Pressure: 16 bar, 25 bar, 40 bar | |
| Manufacturing Standard: GB, ISO, ANSI, BS, DIN | |
| Port Size | d | L | A/A1 | H/H1 | Pneumatic Actuator |
Electric Actuator |
| 1/2'' | 10 | 68 | 146/160 | 115/144 | PA050D | EA-05 |
| 3/4'' | 15 | 78 | 146/160 | 125/154 | ||
| 1'' | 18 | 86 | 146/160 | 135/164 | ||
| 1 1/4'' | 25 | 111 | 167/160 | 165/178 | PA063D | |
| 1 1/2'' | 32 | 126 | 167/160 | 175/188 | ||
| 2'' | 40 | 143 | 213/198 | 200/230 | PA075D | EA-10 |
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