Top Normally Closed Valves

Honeywell V8043E1012 3/4" Sweat Zone Valve (Connection = 18" Leads)

  • May be installed without disassembling the valveManual opener (on all models, except straight-through, normally open valves) for valve operation on power failure.
  • valve returns to automatic position when power is restored.
  • Complete powerhead may be removed or replaced without breaking plumbing line connections or draining the system.
  • Compact construction for easy installationActuator motor may be replaced without removing the valve body or draining the system.
  • Manual opener (on all models, except straight-through, normally open valves) for valve operation on power failure.
  • May be installed without disassembling the valve.
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Air Curtain Door Switch Mars TZ6112 Combo Microswitch 42151

  • 10 Brown ABS Normally Closed Door Contact Switch.
  • Will make Sense Door Closer at Roughly ¾” or 15mm.
  • This Contact Works with Any Access Control or Burglar Alarm System Available.
  • NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..
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Flair Electronics Recessed Contact, Wire Leads, VIP94-2 (10 Pack)

  • 5 Brown ABS Normally Closed Miniature Door Contact Switch 5/8 by 3/8 with 11" pigtail.
  • Will Sense Door Closer at Roughly 1/2” or 10mm.
  • This Contact Works with Any Access Control or Burglar Alarm System Available.
  • NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..
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1/4\ NPT Brass Electric Solenoid Valve 12V DC Normally Closed VITON (Standard USA Pipe Thread). Solid Brass, Direct Acting, Viton Gasket Solenoid Valve by AOMAG

  • VITON GASKET- Viton is a space age material that is very chemically inert. As such, it is commonly used with gasoline, kerosine and other organic solvents. Some companies sell solenoid valves with NBR gasket and advertise gasoline use. DO NOT USE NBR gasket for gasoline (it will corrode the gasket and can cause serious gasoline leak and accident or fire). If you intend on using a valve for gasoline, use only VITON gasket..
  • ISO/OEM/ODM/CE and1 year warranty. DIRECT ACTING and Normally Closed Valve (N.C.) - The solenoid’s magnetic field with directly moves the plunger and close the orifice for any fluid or gas flow. Only opens while energized..
  • -NEW- Re-engineered low power coil with up to 50% less heat generation. The valve starts as 19W and as it heat up to operating temperature power reduces to approx. 10-13W..
  • 1/4" NPT (USA National Pipe Thread). Commonly used standard pipe thread in US...
  • PLEASE NOTE: This valve is NOT a continuous duty valve and should NOT be in continuous use for more than 6 hours in a single cycle.
  • to do so will shorten the life of the valve and may cause the core of the valve to burn out. If you need a continuous duty valve for your project please search for our AOMAG Motorized Ball Valves..
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DYNWAVE 50cm X 6063 Aluminium Alloy Al Si, 8mm

  • 1 White ABS Normally Closed Miniature Door Contact Switch 5/8 by 3/8 with screw terminals to terminate alarm system wires.
  • Will Sense Door Closer at Roughly 1/2” or 10mm.
  • This Contact Works with Any Access Control or Burglar Alarm System Available.
  • NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..
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Honeywell 2 Stage Non-Programmable Digital Thermostat model TH5220D1003

  • Gas, oil, or electric heat with air conditioning.
  • Heat only – two-wire systems, power to open and close zone valves (Series 20), and normally open zone valves.
  • Warm air, hot water, high-efficiency furnaces, heat pumps, steam, gravity.
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10 Pack 30/40 AMP Waterproof 5-Pin 12V Relay Switch （SPDT）for 12 Volt Automotive Marine Relays for Boats Auto Fan Cars

  • 12V waterproof 5-Pin SPDT Relay Excellent waterproof and dustproof ability, high quality in any weather conditions.
  • 12V 5-Pin SPDT Relay Pin Specifications: Ground (85), VDC (30), Trigger (86), Output N/C (87a), and Output N/O (87)..
  • SPDT Relay with 40A/30A High Switching Capability,it has both normally open and normally closed terminals, terminal 87A is powered when the relay is inactive and switches the power to terminal 87 when the relay is activated..
  • 12v relays can operate with anywhere between 9v and 14v,Very suitable for 12V automotive, marine, and machine circuits..
  • These 12V 5-pin relays are rated to handle 30A on normally closed pin 87a and 40A on normally open pin 87..
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Panopticon Tech 10 pcs Brown Door Contacts Surface Mount NC Security Alarm Window Sensors WMagnetic Reed Switch. These ¾” Position switches (DCS) Work All Access Control & Burglar Alarm Systems

  • 10 Brown ABS Surface Mount Normally Closed Door Contact Switch.
  • Will make Sense Door Closer at Roughly ¾” or 15mm.
  • This Contact Works with Any Access Control or Burglar Alarm System Available.
  • NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..
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1 pcs White Recessed Door Contacts NC Security Alarm Window Sensors with Magnetic Reed Switch These ¾” Door Contact Position switches DCS Work with All Access Control and Burglar Alarm Systems

  • 1 White ABS Normally Closed Door Contact Switch.
  • Will make Sense Door Closer at Roughly ¾” or 15mm.
  • This Contact Works with Any Access Control or Burglar Alarm System Available.
  • NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed....
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Panopticon Tech 3 pcs Wired White Door Contacts Surface Mount NC Security Alarm Window Sensors.These ¾ inch Contact Position switches (DCS) Work with All Access Control and Burglar Systems

  • 3 White ABS Surface Mount Normally Closed Door Contact Switch with 11" Pigtail.
  • Will make Sense Door Closer at Roughly ¾” or 15mm.
  • This Contact Works with Any Access Control or Burglar Alarm System Available.
  • NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..
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1 pcs White Recessed Door Contacts NC Security Alarm Window Sensors with Magnetic Reed Switch These ¾” Door Contact Position switches DCS Work with All Access Control and Burglar Alarm Systems

  • 1 White ABS Normally Closed Door Contact Switch.
  • Will make Sense Door Closer at Roughly ¾” or 15mm.
  • This Contact Works with Any Access Control or Burglar Alarm System Available.
  • NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..
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10pcs RC-33 NC Recessed Wired Window Door Contact Sensor Alarm Magnetic Reed Switch White

  • RC-33 NC Recessed Wired Window Door Contact Sensor Alarm Magnetic Reed Switch.
  • Magnet near together, the switch is closed.And the switch and magnet is separate, the switch is open..
  • NC means Normally Closed: When the magnet together, the circuit is conductive( light on ).
  • when the magnet separate, the circuit is not conductive ( light off )..
  • NC means Normally Closed:When the magnet together, the circuit is conductive( light on ).
  • Each Size(Approx): 17 x 10.6mm / 0.67 x 0.42-inch (H*D) Cable Length(Each): 25cm / 9.8-inch.
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