Butterfly valves with double offset of PA 700 series
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Structurally valves of series PA700 are made with a double offset of the disk - relative to the valve body axis and the pipeline axis. This design reduces wear of the seat parts and reduces the torque required to open and close the valve. A soft seat of EPDM, NBR or Viton is manufactured in the form of a removable O-ring on the disc, which simplifies its quick replacement in case of wear and extends the valve service life. With opening angles up to 20-70° valves can be used for throttling the flow of working medium Connection type is flanged. Valves are designed for installation on process pipelines in metallurgical, gas processing, petrochemical, oil refining, chemical industries, fuel and energy complex enterprises, housing and utilities facilities, water supply and sanitation systems.
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| Manufacture and supply: | Acc. to TU 3700-001-55604618-2013 |
| Type of construction: | Flanged butterfly valves with double offset and elastomer seat |
| Nominal diameter: | DN 50 – DN 2400 mm |
| Nominal pressure: | - PN 6, 10, 16, 25 kgf/cm2 |
| Temperature of working medium: | Up to +200 °С depending on the seat material |
| Operation: | – gearbox DN 100-2400 mm – electric or pneumatic actuator DN 100-2400 mm |
| Leakage class: | «А» acc. to GOST Р 54808-2011 |
| Main working mediums: | Water, oil, oil products, water-gas-oil mixtures, drainage and sewage, sea water |
| Connection type: | - flanged Connecting flanges according to GOST 33259-2015 |
| Installation position: | Any, except the position "electric actuator down" for valves with electric actuator |
| Flow direction of the working mediums: | Unidirectional, along the arrow on the valve body, bidirectional upon request |
| Flow rate of the working medium: | Not more than 1,0-5,0 m/s (for liquids) |
| Climatic version: | У, УХЛ, Т, ТМ, ТВ acc. to GOST 15150-69 |
| Top flange: | Acc. to ISO 5211 |
