Pneumax - Hauptkatalog Page 241
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Valves and solenoid valves poppet system Series N776 - For compressed air and vacuum - G1 1/2" Series N776 - For compressed air and vacuum - G1 1/2" General The N776 G1.1/2” series of valves and solenoid operated poppet valves is the result of the technical evolution of the 776 series. A rolling diaphragm construction has replaced the previously used piston design ensure lower frictions and longer life. Connection 3 is isolated via a dedicated seal which allow to have the n.O. version as well as the self feed for vacuum which was not available on the 776 series. the pilot valves are the M3r (CnOMO stile) with bistable manual override. Coils are not included and have to be ordered separately (see 300 series, 22mm MB coils and 30mm CNOMO MC coils). Coils homologated are also available. (See series 300). Air distributiOn 1 Construction characteristics springs stainless steel Pistons Pin guide diaphragm body, operator and end cover seals and poppets Aluminium (for Air) - Acetylic resin (for Vacuum) stainless steel nbr oil resistant rubber die-cast aluminium nbr Use and maintenance these valves have a mean life of 10 to 15 million cycles under normal operating conditions. Lubrication is not required for good operation but we recommend good filtration to avoid dirty deposit causing malfunction. Please ensure that the valve is being used according with the manufacturers specification, such as air pressure and temperature. the exhaust port of the distributor has to be protected in a dusty and dirty environment. For these products, according to the construction technique and special application, is not required any maintenance with parts replacement. When necessary it is sufficient to clean the internal parts. When it is used the solenoid valves with internal pilot, either for air or vacuum, inlet flow rate must be equal or higher that the required consumption flow rate. Otherwise is better choose the external pilot version. Minumum working pressure diagram for external pilot versions N.C. & N.O. 3 2,5 2 1,5 1 0,5 1 2 3 4 5 6 7 8 9 10 Overall dimensions and technical information are provided solely for informative purposes and may be modified without notice 1 | 221
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