MRVB
4Pages

MANUAL RESET SHUT - OFF VALVES Series MRVB…NC ECONEX Manual Reset Shut-Off valves Normally Closed of the series MRVB are a new-concept powerful solenoid capable of functioning at higher operating pressures and flow capacities than most comparable valves now available. MRVB valves are available in the following sizes: Rp ½ and Rp ¾. They are particularly suitable for the control of gases belonging to the 1st, 2nd and 3rd family and of air. Valve body : brass Standard supply voltage : 230 Vac Trim : stainless steel On request : 110 Vac Seat disc : Buna "N" 24 Vac 24 V.D.C. / 12 V.D.C. Connections : Rp ½ and Rp ¾ according to ISO 7-1 Frequency : 50 – 60 Hz Orifice size : 13 mm Duty cycle : continuous Inlet pressure : 500 mbar Connector : DIN 43650 [ISO 4400] Pg 11, with rectifier Closing time : < 1 second Cable inlet : adjustable 90° by 90° Ambient Enclosure : IP 65 - IEC 529 temperature : - 10° ÷ + 60° C Coil orientation : 360° .. Normally closed operation .. Quick closing .. Installation in any position [see installation and operating instructions] .. Quiet operation .. Resin-moulded coil .. D.C. current with rectifier inside the plug connector

SIZE Pipe [Rp] Orifice Ø [mm] KVs Max. operating pressure [mbar] Rating [VA] Coil type MODEL 230 Vac -50/60Hz ½ 13 2,83 MRVB15CNCPO1 ¾ 13 3 500 18 P01 MRVB20CNCPO1 NOTE In the model code, replace the VII letter with B for 115 Vac / 50 - 60 Hz , with A for 24 Vac / 50 - 60 Hz, with F for 12 V D.C. and with E for 24 V D.C. OPERATING PRINCIPLE The electromagnetic coil releases the shutting device if de-energized and interrupts the gas flow. Coil can be energized either by a gas detector or by another safety device. For opening the shut-off valve pull the knob placed over the coil upwards...

WARNING PLEASE READ THE OPERATING INSTRUCTIONS BEFORE USE! THIS EQUIPMENT MUST BE INSTALLED ACCORDING TO THE PRESCRIPTIONS IN FORCE! Installation must be carried out exclusively by skilled and authorized service technicians. 1. Make sure that all operating data indicated on the manual reset valve label correspond to those of the system. 2. Remove the protection plugs from the manual reset valve. 3. Before installing the manual reset valve make sure that the pipeline is free from impurities and perfectly aligned with the valve body. The pipeline must be vibration-free. 4. The sealing...