Pneumax-Technology for vacuum applications

Overall dimensions and technical information are provided solely for informative purposes and may be modified without notice. 4.17 Series N776 Vacuum components Valves and solenoid valves with shutter - 2/2 - 3/2 - G1 1/2" General details The series of valves and solenoid valves N776 of G1 1/2”, developed technically and functionally out of series 776. A rolling diaphragmwas introduced in place of the traditional piston, thus eliminating friction andwear on the gasket. There is an additional gasket on the piston that insulates connection 3, making it possible to have normally open versions and self-supplied versions with vacuum (not available in the previous series 776). The actuation mechanisms are the M3R (MechanismCNOMO) with two-positionmanual control. The windings are not included and have to be ordered separately (see summary page for electric windings). Certifiedwindings are also available Construction features Body, operator and bottom: Seals and shutters: Piston: Guide pin: Springs: Diaphragm: Die-cast aluminium Nitrile rubber (NBR), oilproof, Acetal resin Nickel-plated steel Steel Rubberised nitrile fabric (NBR), oilproof Wear and maintenance These valves and solenoid valves have an average service life of approximately 10 - 15 million cycles under optimum conditions of usage. They do not need to be lubricated to operate well, but good filtration is recommended to prevent dirt accumulation and consequently likelymalfunctioning. Check to make sure that the conditions of use are consistent with the indicated limits, pressure, temperature, etc. Take care to protect the discharge outlets of the valves in the presence of dirt and powder. For these products, due to the manner in which they are constructed, maintenance by replacing valve parts does not have to be carried out. When necessary, basic internal cleaning can be performed, carefully removing any dirt accumulations. When the self-supply version is used in the solenoid valves, take care that the use is never, as air flow, the same as the supply, because in this case there would not be sufficient vacuum for actuation. This is normally found on shutter valves since they do not have the closed centres position and insufficient actuation could cause the system to discharge fromoutlet 3. In this case switch to the version with external actuation. Normally closed Self-supplied Normally open External supply Connections of valves: 1 = DISCHARGE 2 = USE 3 = PUMP Normally open Self-supplied Normally closed External supply 1 = PUMP 2 = USE 3 = DISCHARGE 4