Válvula solenoide de ação direta EGN40

de 2 viasNOnormalmente fechada

Description
These direct drive two-way, two-position vacuum solenoid valves in the new series feature a conical shutter servo-controlled by the vacuum. They are normally closed, but they can be supplied normally open upon request. They are composed of an anodised aluminium body where the connections are located, a conical silicon shutter assembled onto a stainless steel stem and a membrane in a special rubberised and coated compound. An actuator activated by an electric coil manages the vacuum at the servo-control. The operating principle of these solenoid valves is based on the pressure differential between the vacuum pump or generator and the pressure of the suctioned air. By addressing this differential pressure to the servocontrol via the actuator, the shutter can be controlled without compressed air or springs. Due to their operating principle, they are not recommended on plants with rough vacuum levels (below 850 absolute mbar, equal to 15% vacuum). The lack of springs, frictions and internal dynamic stresses favours a high response speed and guarantees long lasting operation of the solenoid valve. The standard electric coil is fully plasticised with synthetic resin, tight execution, insulation class F (up to 155°C) compliant with VDE standards, with 6.3 mm three-terminal electrical connections in compliance with EN 175301-803 (ex-DIN 43650). Protection degree IP54, IP65 with connector inserted. Tolerance permitted on the nominal voltage value: ± 10%. Maximum absorption: 20 V.A. with AC and 18 W with DC. The electric coil can be rotated 360°. The connector can be rotated 180° on the coil and can be supplied, upon request, with LED light, anti-interference circuit and/or with protection devices against overvoltage and polarity reversal. This series of solenoid valves can be used on vacuum systems without compressed air and in all applications where suction has to be controlled separately from the air inlet into circuit, such as degasifiers, autoclaves, vacuum thermo-welders, etc. The solenoid valve must always be chosen according to the flow rate and, therefore, to the vacuum pump or generator suction connection.

Caractéristiques / spécifications techniques

• Operating pressure: from 0.5 to 850 absolute mbar
• Recommended minimum vacuum level: not suitable for rough vacuum levels below 850 absolute mbar (≈15% vacuum)
• Temperature of suctioned fluid: from –5 to +60 °C
• Construction: anodised aluminium body; conical silicon shutter on stainless steel stem; membrane in special rubberised and coated compound
• Operating principle: conical shutter servo-controlled by differential pressure between vacuum source and suctioned air; no compressed air or springs required
• Normally closed standard; normally open versions available on request
• Electrical coil: fully plasticised with synthetic resin; tight execution; insulation class F (up to 155 °C); 6.3 mm three-terminal electrical connections compliant with EN 175301-803 (ex-DIN 43650)
• Protection degree: IP54 standard; IP65 with connector inserted
• Tolerance on nominal voltage: ± 10%
• Maximum absorption: 20 V.A. (AC) and 18 W (DC)
• Coil rotation: 360° possible; connector rotation: 180° on the coil
• Optional coil features: LED light, anti-interference circuit, protection devices against overvoltage and polarity reversal (available on request)
• Applications: vacuum systems without compressed air, degasifiers, autoclaves, vacuum thermo-welders and any application where suction must be controlled separately from air inlet
• Product codes / references in this series: EGN40NC, EGN40NO, EGN52NC, EGN52NO