Series 2/977 08
Type 2/977 valves for potentially explosive atmospheres are direct and external medium controlled and require external compressed air 4-10 bar for switching.
The design is simple and solid with fast response times.
This type of valve can be traversed and shut off from both sides. The ‘medium pressure below valve seat’ option should be selected in order to effectively prevent closing impacts with liquids. Special conditions (X) must be observed: Limitation of the ambient and medium temperature depending on the sealing material used.
This series includes: 333 Products
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Technical informations
Connections
G1/2, G3/4, G1, G2, DN32
Pressure
0 bar up to 40 bar
Temperature
-40 °C up to 200 °C
Type of Control
pneum. direct
Housing materials
AISI 316 - 1.4408
Sealing
PTFE
Media
natural Gas CH4, Sodium Phosphate NA3PO4, Flue Gas SOX, SO2, N2, O2, CO, Formic Acid HCOOH 50% 20°C, Air, Propane/Butane gaseous C3H8, LPG liquified petrol gas propane, butane, Triglycole, Triethylenglycole C6H14O4, Isopropanol CH3 CH(OH)CH3, Hydrogen Sulfide, gas, dry, H2S, Gasoline, Dieseloil, Fuels, JP-8 jet fuel aviation, kerosine, Hydrogen Peroxide 0,5% H2O2, +20°C, Resins, Additives for Fuels, Adblue, Phenol, Carbolic Acid - diluted with water, Propylene, Propene - C3H6, Sodium hydroxide (sodium hydroxide), NaOH, 30%, +20°C, Biodiesel, Rapsmethylester (RME), Mercaptane, 2-methylpentan, isohexane, liquid, refrigerant R290, R600a, heptane ( hexan, petrol), Refrigerant R407C,
potassium hydroxide KOH, 50%, aqueous, Nitrogen oxides, nitrous gases NOx, Nitrogen dioxide NO2, Urea, isoprene C5H8, Water, H2O, Water demineralised, Osmose, Water H2O with Glycole, Cool Emulsion, Cooling Water, Motor Oil, Mineral Oil, sodium silicate (waterglass), Ethylacetat CH3 CO2 CH2 CH3, Oxygen O2, Methanol Alcohole CH3OH, Ethanol, Helium Gas He, Dimethylether DME, Sulfur Dioxide Liquid SO2, Brake Fluid, Butadien C4H6, Ammoniac NH3, silan gas, Propionic acid C3H6O2, Sodium nitrite - aqueous NaNO2, Nitric acid aqueous 40%, HNO3
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