Solenoid Valves

What is a normally closed or normally open motorised ball valve?

Most electrically actuated or motorized ball valves in the market today are larger heavy cumbersome power to open, power to close with no power no valve movement. In some applications it is helpful to have a fail safe position closed auto return electric actuated ball valve so that when electrical power is removed or power supply fails the actuator will automatically return back to its original position i.e. fail safe close, which offers a much higher level of safety, energy saving and simplified valve set-up, installation and control. 
Typically this has been achieved with either an additional costly, heavy, large rechargeable industrial battery back up or has been achieved with a strong internal spring return mechanism requiring a heavier duty more powerful electric motor but both these offer disadvantages in either terms of cost, size, wiring and or reliability.

A normally closed motorized ball valve is also known as a N/C ball valve, spring return closed actuated ball valve, failsafe position closed valve

A normally open motorised ball valve is also known as a N/O ball valve, spring return open electrically actuated valve, failsafe position open valve.

AR series normally closed ball valve.

Failsfe return circuit

The ABVM miniature 5 watt series electrically actuated ball valve standard series with the new auto return electric actuator offers a compact, guaranteed fail-safe valve actuator return from an integral power backup supply, simple 2 wire control power open fail safe close, patented floating valve seal design, low power consumption can br controlled by either any 9-24AC/DC signal or 110 to 240 volt AC 50/60Hz power supply. The ABVM 9Actuated Ball Valve Miniature) are mounted to a full flow (full bore) 304 stainless steel ball valve with PTFE seals with a pressure rating from vacuum to 10 Bar and a maximum media temperature of +100ºC. The combination makes this an attractive, low cost, compact solution for many fluid and gas applications such as HVAC systems, waste water treatment, chemical processing and dosing, motor home waste water, caravan water systems, boat hot - cold - waste water, diesel fuel line safety control, vegetable oil systems, rainwater recovery, underfloor and central heating systems, building management systems, retirement home water control, prison water isolation systems and just about any thick liquid or corrosive gas contaminated, particles debris which are suited to 304 stainless and PTFE.

Miniature auto return actuated ball valve 1/2",3/4" 1" BSP type ABVM-AR.

ABVM dimensions


miniature actuated ball valve

With technical advances and reliability in reduced electric motor power consumption and electrical components it is now possible to offer a two wire electrically actuated miniature ball valve with integral capacitor energy storage that will offer fail-safe operation for over 70000 cycles that consumes less than 5 watts.

The miniature ABVM compact actuated ball valve on the left offers quick 3 to 5 second actuation time with 2 Nm torque optional 3/8", 1/2", 3/4" and 1" full flow stainless steel 10 bar rated ball valve with IP67 ingress protection, media up to +100ºC available control voltages 9 to 24vAC/DC (any 9 to 24 volt AC or DC supply) or 110 to 240 volt AC 50/60Hz (i.e. any 110vAc through to 240v AC supply).

When power is applied this ABVM-AR (Auto Return) normally closed compact actuator will quickly actuate the ball valve into the open position (3 to 5 seconds) and will quickly recharging the internal capacitor (typically maximum 10 seconds required after each use). When in the fully open position and recharged the actuator stops taking power and the valve stays in the open position. When electrical power is removed the actuator detects the power loss and draws power from the internal capacitor (electrical storage) which enables the ball valve to automatically return to the closed position without the need for any additional signal or electrical power. The capacitor is quickly recharged during the next power open cycle and will draw any additional charge if required until power is removed.

An initial 30 second (New Out of the Box) charge is only required when initially installed to fully charge the capacitor, there after only requiring a 10 seconds recharging period.

Benefits of fail-safe position actuated valves.

One of the major benefits of this type of actuated ball valve is not only the full uninhibited flow normally associated with a solenoid valves in, up, over, down and round flow path but also benefits from being unaffected by debris, back flow typically found in rainwater systems but also requires a much lower power demand size for size and greatly reduced heat build up making this design of control valve ideally suited for hard water, BMS building and Zone valves, gravity fed waste water systems from motor caravans, motor homes, boats, yachts but also diesel, biogas and petrol fuel lines, compressed air, mains water, RO water and most other even thick liquids and corrosive gases that are suited to stainless steel and PTFE.

2 and 3 way PVC, Brass, 316 stainless steel electrically actuated valves with fail safe open or closed with standard 2 wire control or 3 wire 1 point control and the option for E2 fully open open and fully closed volt free position signal feedback. Our technical sales team who will be happy to help you if you have additional requirments of general questions.

ABVM-AR Auto Return Circuit 2 wire

ABVM failsafe circuit

Power Open / Failsafe Closed

Power ON motor actuates valve into the open position, when fully open and capacitor is recharged the actuator stops taking power.

When power is removed, the farad capacitor powers motor to close the valve.

Power Closed / Failsafe Open

Power ON motor actuates valve into the closed position, when fully closed and capacitor is recharged the actuator stops taking power.

When power is removed, the farad capacitor powers motor to open the valve.

Options:

Control voltages: 9-24 volt AC/DC or 110-240vAC.

Manual over ride available for 9-24 low voltage control.

Visual position indicator is standard.

E2 volt free fully open and fully closed position feed back switches available. Circuit shown below.

ABVM-AR-E2 Auto return circuit with E2 position switches 5 wire.

ABVM failsafe circuit with E2

Power Open / Failsafe Closed:

Power ON motor actuates valve into the open position, when fully open and capacitor is recharged the actuator stops taking power.

Fully open circuit Black + White wires is made.

When power is removed, the farad capacitor powers motor to close the valve.

Fully closed circuit Yellow + White wires is made.

Power Closed / Failsafe Open:

Power ON motor actuates valve into the closed position, when fully closed and capacitor is recharged the actuator stops taking power.

Fully closed circuit Yellow + White wires is made.

When power is removed, the farad capacitor powers motor to open the valve.

Fully open circuit Black + White wires is made.

ABMV 1 wire Control - 3 wires

ABVM 3 wire circuit

Connect RED and Black wires to power supply.

Green is control wire: Power to Green valve opens and then stops taking power.

Power off to Green valves closes.

Options:

Control voltages: 9-24 volt AC/DC or 110-240vAC.

Manual over ride available for 9-24 volt control.

Visual position indicator is standard.

E2 volt free fully open and fully closed position feed back switches available, see below.

ABVM 1 wire control with E2 position switches 7 wires.

ABVM 3 wire circuit with E2

Connect RED and Black wires to power supply.

Green is control wire: Power to Green valve opens and then stops taking power.

Black + Grey wire fully open circuit is made.

Power off to Green valves closes.

Yellow and White wires fully closed circuit is made.

Options:

Control voltages: 9-24 volt AC/DC or 110-240vAC.

Manual over ride available for 9-24 volt control.

Visual position indicator is standard.

Auto return actuated ball valve 11/4", 11/2" or 2" BSP type ABV-AR.

actuated ball valve with fail-safe position

The ABV standard motorized ball valve with fail-safe close also known as normally closed actuated ball valve auto return electrically actuated ball valvewith capacitor return will auto return close upon electrical power failure (Option failsafe Open or 1 wire control or UPVC ball valve). This particular ABV model comes with IP67 protection with a strong ABS housing with duty cycle exceeding 100,000 open/close cycles, E2 fully open and fully closed volt free position feed back switches and is supplied with either 11/4", 11/2 or 2" BSP or NPT threaded stainless steel full flow ball valve with PTFE seals offering a pressure range 0 to 10 bar and a maximum media temperature of +100ºC. This ABV actuator utilizes a slightly more powerful 22 watt electric motor offering a torque output of 20 Nm to cope with these larger ball valves and requires only 12 seconds to fully open or 12 seconds fully close. Available voltages include 12vDC, 24vDC or 110-240 AC/DC 50/60Hz. Each actuator will work within each specified voltage range chosen which is especially helpful if running from 12 or 24 volt such as a camper van, boat, motor-home power supply which can vary according to battery charge status. Any 110-240 volt actuator will work from any applied AC voltage from 110 volts through to 240 volts 50/60Hz. This particular model is supplied complete with visual position indicator and E2 position feed back switches.

Working on the same self closing or fail-safe actuator circuit the actuator will detect electrical power loss and then will draw energy from the internal capacitor to automatically power the motor to move the ball valve. An initial charge of 60 seconds is required when first installed which happens during the first power open sequence and from this point forward the valve will always maintain its own back up power supply.

UPVC Actuated ball valve

ABV-AR auto return actuator (Normally closed  or normally open) and 3 wire control ABV quarter turn actuator (Power Open - Power close) can be mounted to UPVC 2 way 3 pc 10 Bar +100C rated ball valve (EPDM sealing option FPM sealing), for port sizes 1/2 to 2" thread or weld / cement end. These are ideal for very aggressive fluids and gases and especially sea water applications.

The ABVP PVC actuated ball valve is supplied complete with visual position indicator, and is 100% duty rated to 50,000 open/close cycles has a low power 22 watt low power fast acting 15 motor and typically supplied with volt free open and closed position feed back switches.

ABV-AR-E2 Auto return circuit with E2 position switches 5 wire.

ABVM failsafe circuit with E2

Power Open / Failsafe Closed:

Power ON motor actuates valve into the open position, when fully open and capacitor is recharged the actuator stops taking power.

Fully open circuit Black + White wires is made.

When power is removed, the farad capacitor powers motor to close the valve.

Fully closed circuit Yellow + White wires is made.

Power Closed / Failsafe Open:

Power ON motor actuates valve into the closed position, when fully closed and capacitor is recharged the actuator stops taking power.

Fully closed circuit Yellow + White wires is made.

When power is removed, the farad capacitor powers motor to open the valve.

Fully open circuit Black + White wires is made.

ABV 1 wire control with E2 position switches 7 wires.

ABVM 3 wire circuit with E2

Connect RED and Black wires to power supply.

Green is control wire: Power to Green valve opens and then stops taking power.

Black + Grey wire fully open circuit is made.

Power off to Green valves closes.

Yellow and White wires fully closed circuit is made.

Options:

Control voltages: 12 volt DC, 24vDC or or 110-240vAC.

Visual position indicator is standard.

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