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Butterfly valves are designed for use as shut-off or regulating valves for controlling flows in heat supply systems, water supply systems, in technological processes of food, chemical, oil and gas, pulp and paper and other industries. The valves are opened and closed by turning the disk by 90°. Opening is performed by turning the handle counterclockwise, closing - clockwise.
Pneumatic rotary actuator is designed to automate the process of control of industrial valves, as well as to determine the position of the valve shut-off body.
Pneumatic valve is used to change the direction, start, stop the compressed air flow in the pneumatic system depending on the external control action.
| Name | Significance |
| Nominal pressure PN, bar | 16 |
| Working medium temperature, °C | from -20 to +100 |
| Application | water supply, heat supply |
| Connection to pipeline | Interflange (threaded lugs) |
| Gate type | swivel disk |
| Control type | pneumatic actuator |
| Manufacturer's country | China |

| DN | H, mm | A, mm | E, mm |
| 125 | 317.5 | 495 | 200 |
| 150 | 354.5 | 495 | 200 |

| № | Details | Material |
| 1 | Body | cast iron QT450 |
| 2 | Disk | cast iron QT450 |
| 3 | Seat seal | EPDM |
| 4 | Rod | stainless steel SS 316 |

| Type of pneumatic actuator | double-acting |
| Control pressure, bar | 2 ÷ 8 |
| Operating temperature, °C | -20 to +80 |
| Visual position indicator | open / closed |
| Manual control | handwheel |
| Swivel angle, ° | 90 ± 5 |
| Top connection standard | NAMUR |
| Air connection standard | NAMUR |
| Air supply connection thread | G 1/4ʺ |
| ISO flange type | F07/F10 |
| Stem square, mm | 22x22 |
| Weight, kg | 9 |
| Average life, cycles closed/open | 300 000 |

| A, mm | 495 |
| A1, mm | 461.5 |
| B, mm | 133 |
| C, mm | 109.5 |
| D, mm | 153 |
| E, mm | 57.5 |
| F, mm | 64 |
| G, mm | 26 |
| H, mm | 80 |
| I, mm | 30 |
| N, mm | 22 |
| W, mm | 200 |
| J, mm | 102 |
| K, mm | 70 |
| L, mm | M10x16 |
| M, mm | M8x13 |
| O, mm | 4 |
| P, mm | 4 |
| S, mm | M6 |
| T, mm | 24 |
| U, mm | 32 |

| № | Part name | Material |
| 1 | Indicator screw | ABS (plastic) |
| 2 | Position indicator | ABS (plastic) |
| 3 | Spring clip | Stainless steel 304 |
| 4 | Washer | Stainless steel 304 |
| 5 | External washer | Engineering plastic |
| 6 | Adjustment screw | Stainless steel 304 |
| 7 | Nut | Stainless steel 304 |
| 8 | Washer | Stainless steel 304 |
| 9 | Body | Extruded aluminum alloy |
| 10 | Piston | Die cast aluminum alloy |
| 11 | Piston O-ring | NBR |
| 12 | Bearing group | Engineering plastic |
| 13 | End cap O-ring | NBR |
| 14 | End cap | Die cast aluminum alloy coated with polyester paint |
| 15 | Fixing screw | Stainless steel 304 |
| 16 | Internal washer | Engineering plastic |
| 17 | Sealing ring | NBR |
| 18 | Bearing | Engineering plastic |
| 19 | Retainer | Alloy steel |
| 20 | Gear | Alloy steel |
| 21 | Bearing | Engineering plastic |
| 22 | Sealing ring | NBR |

| Name | meaning |
| Type of pneumatic valve | slide valve |
| Working pressure, bar | 1.5 ÷ 8 |
| Supply voltage, V | 220 V |
| Total power, Va | 4.5 |
| Control | double-sided electromagnetic |
| Frequency of operation, cycle/sec | 5 |

| Pneumatic valve model | 4V320-08 |
| A, mm | 71.9 |
| B, mm | 45 |
| C, mm | 94.4 |
| D, mm | 27 |
| E, mm | 69 |
| F, mm | 40 |
| I, mm | 24 |
| K, mm | 40 |
| L, mm | 188.8 |
| M, mm | 69.4 |
| N, mm | 50 |
| O, mm | 82.4 |
| P, mm | 24 |
| S, mm | 20 |
| T, mm | 6.5 |
| U, mm | 2.4 |
| V, mm | 4 |
| H, mm | 82.4 |

Ships within 48 hours · Estimated delivery Jun 21 - Jun 26
US$40
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