Two Ways Solenoid Valve Normal Purpose
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What's the two ways solenoid valve?

It’s a valve that uses solenoid coil to drive a movable iron core to pull or push a diaphragm or a piston to open or close a orifice which the medium will get through. This is the basic process that opens the valve. Based on this unit, more complex air solenoid valve are designed.

Two ways solenoid valves eliminate the need for manual in a fluid control system and only require an electrical input to operate, this makes them easy to program and integration. So they are installed in a wide variety of applications.

The Structure Of The Direct Acting Two Ways Solenoid Valve

Structure Of Directing solenoid valve

Inner Structure And Material Of Major Part

1.  Fixation Nut-Steel with nickel plated

2. The Solenoid Coil-Copper

3. Plunger Srping -Carbon Steel

4. Plunger Exhaust Hole

5. Plunger Sealing Seat

6. Diaphragm Bracket

7. Diaphragm Orifice

8. Terminal Box-Plastic

9. Pilot Pluger- Steel

10. Fixation nut-Steel or Stainless Steel

11. Connect Spring(Plunger and Diaphragm bracket)

12. Diaphragm

13. Diaphragm Bleed Hole

How Does The Two Ways Valve Work?

solenoid valve Open status

To Open: When the valve is energized, the coil generate magnetic force to lift the plunger. The plunger move upward and open pilot orifice causing system pressure holding the diaphragm/piston closed to drop. As system pressure on the top of the diaphragm/piston is reduced, full system pressure on the opposite side of the diaphragm/piston acts to lift the diaphragm/piston away from the main orifice, which allows the full media flow through the valve. 

Two ways solenoid valve shut off status

To Close: When the valve is de-energized, the coil magnetic force disppeared, the plunger move downword under the press of pluger spring and covers the pilot orifice. The system pressure builds up on the top of the diaphragm/piston through the bleed orifice, forcing the diaphragm/piston down until it covers the main orifice and stops media flow through the valve. When the system pressure is 0PSI, the valve also can be operated.

Brass Two Ways Solenoid Valve

The following photograph shows a typical brass two ways solenoid valve. (Directing Model)

Brass Two Way Solenoid Valve

SPECIFICATIONS

Valve Model: Normally Open/Normally Close

Medium: Water, Air, Non-flammable oil or gas. If the medium is flammable gas or oil, the valve must be assembled with EX-proof Coil.

Port Size: 1/8″; 1/4″; 3/8″; 1/2″; 3/4″; 1″; 1-½”; 1-¾”; 2″ for selection.

Thread: NPT, G, BSPT are available.
Mounting Position: Any (preferably with solenoid system upright)
Maximum Medium Temperature: Assembled with NBR diaphragm :-5 to 80°C (23 to 176°F).

Assembled with EPDM or VITON diaphragm:-5 to 150°C (23 to 300°F) 
Ambient Temperature: -5 to 60°C (23 to 140°F) 
Voltage Tolerance: ±10% AC, ±5% DC.

Available Voltage: AC24V, AC110V(50/60HZ), AC220V, AC380V; DC12V, DC24V, DC48V, 
Opening Time (ms): Approximately 100 to 200
Closing Time (ms): Approximately 200 to 1200
Cycling Rate: Approximately 60 cpm
Duty Cycle: Continuous (100%)
Available Coil Molding Material: 
Black Polyphenylen sulphide  Protection Grade: IP65, Max Working Temperature: 150°C (300°F) 
 Black Epoxy Resin Protection Grade: IP65, Max Working Temperature: 100°C (212°F) 

(Ex-proof and IP68 water-proof coil are available)

Stainless Steel Two Ways Solenoid Valve

The following photograph shows a typical stainless steel two ways solenoid valve. (Directing Model)

Stainless Steel Two Way Solenoid Valve

SPECIFICATIONS

Valve Model: Normally Open/Normally Close

Medium: Water, Air, oil or gas, faintly acid, alkali fluid. If the medium is flammable gas or oil, the valve must be assembled with EX-proof Coil.

Port Size: 1/8″; 1/4″; 3/8″; 1/2″; 3/4″; 1″; 1-½”; 1-¾”; 2″ for selection.

Thread: NPT, G, BSPT are available.
Mounting Position: Any (preferably with solenoid system upright)
Maximum Medium Temperature: Assembled with NBR diaphragm :-5 to 80°C (23 to 176°F).

Assembled with EPDM or VITON diaphragm:-5 to 150°C (23 to 300°F) 
Ambient Temperature: -5 to 60°C (23 to 140°F) 
Voltage Tolerance: ±10% AC, ±5% DC.

Available Voltage: AC24V, AC110V(50/60HZ), AC220V, AC380V; DC12V, DC24V, DC48V, 
Opening Time (ms): Approximately 100 to 200
Closing Time (ms): Approximately 200 to 1200
Cycling Rate: Approximately 60 cpm
Duty Cycle: Continuous (100%)
Available Coil Molding Material:
 Black Polyphenylen sulphide  Protection Grade: IP65, Max Working Temperature: 150°C (300°F) 
 Black Epoxy Resin Protection Grade: IP65, Max Working Temperature: 100°C (212°F) 

(Ex-proof and IP68 water-proof coil are available)

Which One is Better The Brass VS Stainless Steel Two Ways Solenoid Valve?

Brass vs. Stainless Steel Valves

Selecting the proper materials for your plumbing system is a hefty responsibility. You’ve got to consider price points, durability, and resistance to safety hazards like corrosion.

It’s a tough choice, so it’s best to use the guide below to ensure you get the right component when choosing between brass vs stainless steel valves.

WHICH IS BETTER?

Numerous differences separate the quality of brass and stainless steel valves for one reason or another. While brass is an excellent general-purpose metal you can use in a broad range of plumbing jobs, stainless steel has other applications that might make it the superior choice instead.

For one, stainless steel valves are much better in terms of corrosion resistance. In fact, this is the main reason why these components are approved by the Food and Drug Administration for handling food and beverage, while brass valves are not.

Still, this doesn’t mean it’s invulnerable to corrosion. Different types, such as the kind that causes red stains or green-blue stains to appear on the surface or the one that causes leaks, can still affect stainless steel valves. Stainless steel valves can also last much longer than brass and can resist higher temperatures.

On the other hand, brass valves are the preferred option in many residential and commercial plumbing systems. It’s also a much better choice for welding, which can reduce labor costs and project duration.

Because of their different strengths and weaknesses, brass or stainless steel valves can’t be named objectively better than one or the other. Instead, you might find that one suits your needs more conveniently by reading through the following pros and cons.

How To Connect a DIN Coil?

How To Connect a DIN Coil

To Connect a DIN Coil:

Remove the Philips screw from the plastic housting & unplug from the DIN coil.

Use the removed screw to push the terminal block out of the plastic DIN housing.

Note the “1”, “2”, and ground “⏚” symbols.

For DC DIN Coils, connect “1” to your positive lead and “2” to your negative lead.

For AC DIN Coils, connect “1” to your HOT lead, “2” to your NEUTRAL lead, and “⏚” to your ground lead, if required.

How To Connect a Grommet Coil?

To Connect a Grommet Coil:

DC Coils: connect the red wire to your positive lead and the black wire to your negative lead.

AC Coils: connect the black wire to your HOT lead and the white wire to your NEUTRAL lead.

For Coils provided with Molded Cables, the color of the wire indicates the type of lead:

GREEN = Ground Wire

BLUE = Positive or HOT Wire

BROWN = Negative or Neutral Wire

Detailed Specification Of Two Ways Solenoid Valve

Two-ways-solenoid-valve.jpg

2WB Stainless steel solenoid valve

Where is a two ways solenoid valve used?

Solenoid valve applications include a broad range of industrial settings, including general on-off control, plant control loops, process control systems and various original equipment manufacturer applications, to name but a few.

Solenoid valves can be found in many different sectors, including:
Refrigeration systems use solenoid valves to reverse the flow of refrigerants. This helps in cooling during summer and heating during winter.
Irrigation systems use solenoid valves with automatic control.
Dishwashers and washing machines use solenoid valves to control the flow of water.
Air conditioning systems use solenoid valves to control air pressure.
Medical and dental equipment use solenoid valve to control the flow, direction and pressure of the fluid.
Water tanks use solenoid valves to control the inflow or outflow of water, often in combination with a float switch.
Car washes to control the water and soap flow.
Industrial cleaning equipmentt