PromArm Butterfly Valves of PA 300 series
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Butterfly valves series series PA300 is a butterfly valves with a symmetrical disk, and the elastomer seat. By default, the connection type is wafer, but may also manufacture with flanges or with threaded lugs. When installed butterfly valves do not require additional seals, elastomer seat covers body from both sides and the contraction of the stopper between the flanges provides tightness of the connection. Seats are available in removable and in-situ option (by means of curing) and have a bi-directional seal without leaks. The design feature of butterfly valves series PA300 in that the working medium is not in contact with the valve body. Therefore, the working characteristics of the valve depend on the materials of the seat and disk. Butterfly valves series PA300 are used in a various industries: heating, water supply, ventilation, conditioning, gas supply, etc.
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| Manufacture and supply: | Acc. to TU 3700-001-55604618-2013 |
| Type of construction: | Butterfly valve with symmetric disk, seat material - elastomer |
| Nominal diameter: | DN 40 – DN 1200 mm |
| Nominal pressure: | - PN 6, 10, 16, 25 kgf/cm2 |
| Temperature of working medium: | Up to +180 ° С depending on the seat material |
| Operation: | – handle DN 40-200 mm – gearbox DN 40-1200 mm – electric or pneumatic actuator DN 40-1200 mm |
| Leakage class: | «А» acc. to GOST Р 54808-2011 |
| Main working mediums: | Water, air, natural gas and gaseous products, ammonia gas, petroleum products, hydrocarbons, acids, alkalis, alcohols, sea water |
| Connection type: | - wafer type with smooth lugs; - wafer type with threaded lugs; – flange type. 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: | Any |
| Flow rate of the working medium: | Up to 80 m/s for gases, up to 5 m/s for liquids |
| Climatic version: | У, УХЛ, Т, ТМ, ТВ acc. to GOST 15150-69 |
| Flow characteristic of valves: | Equal percentage, when opening angles of the disk from 20° to 70° With opening angles up to 60-70° valves can be used for throttling the flow of working medium |
| Top flange: | Acc. to ISO 5211 |
PromArm LLC reserves the right to make changes to the design not affecting functional characteristics of the equipment.
