Pneumax-Technology for vacuum applications

Overall dimensions and technical information are provided solely for informative purposes and may be modified without notice. 4.14 Vacuum components Valves and solenoid valves with shutter in technopolymer 3/2 - G 1" Series T771 Construction features Normally closed self-supplied Normally open externally supplied Connections of valves: 1 = DISCHARGE 2 = USE 3 = PUMP Normally open self-supplied Normally closed externally supplied 1 = PUMP 2 = USE 3 = DISCHARGE Body, operator and bottom Seals and shutters Piston and guide pin Springs Diaphragm General details The new series of valves and solenoid valves with shutter G1” is a new version of the already-proven zamak version and of the version G1/2” - 3/4” series T772 and T773 made of technopolymer. For this version too, the main feature is the high-resistance thermoplasticmaterial fromwhich the components aremoulded. This made it possible to obtain an aesthetically pleasing product with a considerably reduced weight compared to the standard version, and, most importantly, a reduction in price. As for the versions of 1/2” and 3/4” there were also technical and functional changes made, starting with the use of a rolling diaphragm in place of the traditional piston, thus eliminating friction andwear on the seal. For the versions with microsolenoids that are internally or externally supplied, a quick discharge system is available, incorporated in the operator, which reduces the valve's repositioning response times by a further 80% .The actuation solenoid valve mechanisms are the MP with external supply and MV for the self-supplied vacuum versions (they differ from the M2 and M2/V, used on zamak valves, in that there are self-tapping fixation screws in plastic).There are also double versions either for air or for vacuum on which, in place of the standard actuation mechanisms, there is mounted a solenoid valve 3/2 Solenoid- Solenoid complete with 15mm24VDCmicroactuators (code N331.0A). The ordering codes correspond to the solenoid valves with mechanisms "MP" or "MV" mounted. The windings are not included and have to be ordered separately (see summary page for electric windings) with the exception of the dual versions which already have windings 24V DC (N331.0A). Certifiedwindings are also available 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 inside. Ensure 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 and the particular use for which they are intended, maintenance with replacement of 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 from outlet 3. In this case switch to the version with external actuation. High resistance thermoplastic material Nitrile rubber (NBR), oilproof Acetal resin Stainless steel AISI 302 Rubberised fabric in nitrile (NBR) compound, oilproof Response time (ms) Code Type Response time (ms) energised de-energised T771/V.32.11.1 T771/V.32.11.1 T771 /V.32.0.1.MP T771 /V.32.0.1.MP T771 /VS.32.0.1.MP T771 /VS.32.0.1.MP T771 /V.32.0.1AA.MV T771 /V.32.0.1AA.MV N.C. N.O. N.C. N.O. N.C. N.O. N.C. N.O. 55 19 50 19 50 19 100 80 320 450 315 450 50 70 60 60 “ The response time of the directional control valves or the moving parts of logic devices was measured in accordance with the standard ISO 12238:2001 ” 4