Butterfly valves DN 50, DN 80, DN 100, DN 125, DN 150, DN 200
Butterfly valves DN (DU) are intended for installation on pipelines of oil transformers and reactors as shut-off devices for oil flow.
Ambient (air) temperature from - 60°C to + 55°C.
The connecting dimensions of the counter flanges for installing butterfly valves with nominal diameters DN 50, DN 80 and DN 100 correspond to the type of flanges on PN 6, and for butterfly valves with nominal diameters DN 125, DN 150 and DN 200 - to the type of flanges on PN 10 according to ISO 7005 -1.
The tightness of the valves is according to class A GOST 9544.
The body of the disc valve has an agate-gray paint coating, weather-resistant.
The delivery set includes one copy of the operating manual for butterfly valves VBIE.670120.032 RE.
Main settings
| Nominal passage DN, mm | Nominal pressure PN, g/cm2 (MPa) | Operating pressure Рр, kg/cm2 (MPa) | Working environment | Working environment temperature, °C | Climatic performance |
| 50, 80, 100 | 2.5 (0.25) | 2.0 (0.20) | Transformer oil | From - 60 to + 100 | O1* or T1 |
| 125, 150, 200 | 4.0 (0.40) | 3.5 (0.35) |
O1* – general climatic version for outdoor installation in accordance with GOST 15150. Climatic version designation UHL1 is allowed
Butterfly valves can be manually operated using a handle and vary in completeness:
- standard – butterfly valves without a handle, controlled with a wrench - Fig. 1,
- special – disc valves with a stationary handle - Fig. 2.
