Butterfly valves with tripple offset of PA 900 series
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Butterfly valves with triple offset series PA900 are designed for installation on pipelines as shut-off and control valves. Triple offset in the valve design minimizes frictional losses during opening and closing, reducing the torque on the stem required for control. The use of prefabricated metal-graphite or all-metal seat in valves series PA900 allows to operate them under high pressure and temperature conditions, which is an important advantage over valves with elastomer seat. With opening angles up to 20-70° valves can be used for adjusting the flow of working medium. These valves are widely used in process pipelines in power engineering, metallurgy, oil, oil refining, petrochemical, chemical industries, water supply and sanitation facilities, and utilities.
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| Manufacture and supply: | Acc. to TU 3700-001-55604618-2013 |
| Type of construction: | Butterfly valves with triple offset |
| Nominal diameter: | DN 50 – DN 2000 mm |
| Nominal pressure: | PN 6 , 10, 16, 25, 40, 63, 100 kgf/cm2 |
| Temperature of working medium: | Up to +500 ° С depending on the seat material |
| Operation: | – handle DN50-125 mm – gearbox DN 50-2000 mm – electric or pneumatic actuator DN 50-2000 mm |
| Leakage class: | «А» acc. to GOST Р 54808-2011 |
| Main working mediums: | Water, air, steam, natural gas and gaseous hydrocarbons, petroleum, petroleum products, coke oven gas, ammonia, acids, alkalis, alcohols |
| Connection type: | - wafer type with smooth lugs; - wafer type with threaded lugs; - flanged; - welded. 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 |
| Climatic version: | У, УХЛ, Т, ТМ, ТВ acc. to GOST 15150-69 |
| Top flange: | Acc. to ISO 5211 |
