ZD..NC

Normally closed electromagnetic safety valves with manual reset

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ZD..NC FOR MORE INFO

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• DESCRIPTION
• TECHNICAL SPECIFICATION
• HOMOLOGATION AND INSTALLATION
• TECHNICAL LITERATURE

• DESCRIPTION
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  Normally closed electromagnetic safety valves for air and non-aggressive gases (according to EN437) with manual reset.

  General features

  • Voltage tolerance: -15% / +10%.
  • Environment temperature: -15°C / +60°C.
  • Working pressure: 500 mbar Max.
  • Closing time < 1 second.
  • Protection degree: IP65.
  • Cable gland: PG 9.
  • Pressure inlets: G1/4” on two sides (except models with brass body).
  • Limit switch: by request from 3/4” to 4”.
  • Gas type: Air and non-aggressive gases (EN 437).
  • Filter: 600 μm (except models with brass body).

  Electric features

  • Rated voltage: 230Vac – 50/60Hz or 24Vac/dc
  • Upon request valves are available with coils for the following voltages: 110V AC 50/60Hz or 12V AC/DC
• ADVANTAGES
  0

  Normally closed electromagnetic safety valves for air and non-aggressive gases (according to EN437) with manual reset.

  Advantages
• TECHNICAL SPECIFICATION

  CODE	CONNECTION TYPE	PASSAGE DN	POWER SUPPLY	BODY	MAXIMUM PRESSURE Mbar	ABSORPTION W
  ZDVGRM15NC	threaded RP 1/2	15	230Vac 50/60Hz	brass	500	8
  ZDVGRM20NC	threaded RP 3/4	20	230Vac 50/60Hz	brass	500	8
  ZDVGRM25NC	threaded RP 1	25	230Vac 50/60Hz	brass	500	8
  ZDEVRM32NC	threaded RP 1 1/4	32	230Vac 50/60Hz	aluminum	500	12
  ZDEVRM40NC	threaded RP 1 1/2	40	230Vac 50/60Hz	aluminum	500	12
  ZDEVRM50NC	threaded RP 2	50	230Vac 50/60Hz	aluminum	500	12
  ZDEVRMF65NC	flange DN 65	65	230Vac 50/60Hz	aluminum	500	12
  ZDEVRMF80NC	flange DN 80	80	230Vac 50/60Hz	aluminum	500	12
  ZDEVRMF100NC	flange DN 100	100	230Vac 50/60Hz	aluminum	500	45
  ZDVGRM15NCF	threaded RP 1/2	15	24Vac	aluminum	500	8
  ZDVGRM20NCF	threaded RP 3/4	20	24Vac	aluminum	500	8
  ZDVGRM25NCF	threaded RP 1	25	24Vac	aluminum	500	8
  ZDEVRM32NCF	threaded RP 1 1/4	32	24Vac	aluminum	500	12
  ZDEVRM40NCF	threaded RP 1 1/2	40	24Vac	aluminum	500	12
  ZDEVRM50NCF	threaded RP 2	50	24Vac	aluminum	500	12
  ZDEVRMF65NCF	flange DN 65	65	24Vac	aluminum	500	12
  ZDEVRMF80NCF	flange DN 80	80	24Vac	aluminum	500	12
  ZDEVRMF100NCF	flange DN 100	100	24Vac	aluminum	500	45

• HOMOLOGATION AND INSTALLATION
  Homologation

  • Complies with 73/23/CEE; 89/336/CEE standards

  Installation and use

  • Check the correspondence between flow direction and the arrow printed on valve body, verify the correct alignment of connecting pipes and allow enough space from the walls to allow free air circulation.
  • The valve may be mounted with coil in horizontal or vertical position. The coil may be oriented 360 degrees in any direction.
  • Install the valve in an area protected from rain and water splashes or drops.
  • For electrical connection remove the cap of the plug and connect power cables to circuit clamps.

  • Normally closed gas safety valve with manual reset.
  • When isn’t in working position, the spring acts on the shutter keeping the gas passage closed. Simply by energizing the coil the valve does not open.
  • It is necessary to manually move the reset rod located on the top of the coil. Once opened, the valve can maintain this state until the electric current circulates through the coil.
  • In absence of electric current the valve closes rapidly and remains shut off when the power supply returns.
  • Once the cause of stoppagee has been eliminated, the valve must be opened manually, as described above.
  • This type of device, used with one or more pressure switch(es) is suitable for shutting off when there is no gas, air, or current and is suitable for continuous service (always live).
• TECHNICAL LITERATURE
  • ZD..NC EN technical data sheet
  • ZD..NC EN instructions
• FAQS