Types of Solenoid Valve – Explosion Proof Solenoid Valve – Solenoid Valve with Timerbellow seal valve
ZECO, as a manufacturer of solenoid valve. We focus to be an automation solution provider and offer reliable, safe, zero leakage, and affordable solenoid valves to you. Such as directing cating type, pilot operated type, waterproof IP68 type, anti-crossive type, high temperature type, high pressure type, auto-drain type, RO system type, home appliance type, food safe type and pulse valves for your various industries for fluid control.
What is a Solenoid Valve?
A solenoid control valve is a kind of isolation valve that is an electromechanical device allowing an electrical device to control the flow of gas or liquid. The electrical device causes a current to flow through a coil located on the solenoid valve, which in turn results in a magnetic field that causes the displacement of a metal actuator. The actuator is mechanically linked to a valve inside the solenoid valve. This mechanical valve then opens or closes and so allows a liquid or gas either to flow through, or be blocked by the solenoid valve. In this control system, a spring is used to return the actuator and valve back to their resting states when the current flow is removed. Figure 4.16 shows the application of a solenoid valve in a typical control system. A coil inside the solenoid valve generates a magnetic field once an electric current is flowing through. The generated magnetic field actuates the ball valve that can change states to open or close the device in the fluid direction indicated by the arrow.
How does a Solenoid Valve work?
A solenoid valve is an electrically controlled valve. The valve features a solenoid, which is an electric coil with a movable ferromagnetic core (plunger) in its center. In the rest position, the plunger closes off a small orifice. An electric current through the coil creates a magnetic field. The magnetic field exerts an upwards force on the plunger opening the orifice. This is the basic principle that is used to open and close solenoid valves
Applications for Solenoid Valves
Our solenoid valve program includes valves for air, steam, oil, and gas, suiting a number of industrial applications that require high performance in these and other applications:
- Laundry and dry-cleaning equipment
- Industrial washing equipment
- Autoclaves/sterilizers
- Compressors and vacuum pumps
- Plastic moulding machinery
- Steam boilers
- Food processing machinery
- Sprinklers and fire fighting systems
- Dentist equipment
- Coffee machines
- Boilers
Advantages of Solenoid Valves
- Clip-on coil
- Coil range up to IP67
- Best water hammer damping
- Long lifetime and high performance
- Insensitive to dirt
- Broad range and customized solutions
Different type Solenoid Valves:
1. High Pressure Solenoid Valve
 high pressure solenoid valve |
Size Range: 1/4″ to 1/2″ Pressure Range: 0.1~25MPa Material: Stainless Steel Seal: PTFE, EPDM, NBR seat Media: Water, hot water, compressed air, oil |
2. Auto Drain Solenoid Valve With Timer
 auto drain solenoid valve |
Size Range: 3/8″ to 2″ Pressure Range: 0~1.0MPa Material: Brass, Stainless Steel Seal: PTFE, EPDM, NBR seat Media: Water, hot water, compressed air, oil |
3. Electric Automatic Drain Timer Solenoid Valve
 Electric Automatic Drain Timer Solenoid Valve |
Size Range: 3/8″ to 2″ Pressure Range: 0~1.0MPa Material: Brass, Stainless Steel Seal: PTFE, EPDM, NBR seat Media: Water, hot water, compressed air, oil |
4. Tri Clamp Food Grade Sanitary Solenoid Valve
 sanitary food grade solenoid valve |
Size Range: 3/8″ to 2″ Pressure Range: 0~10Bar Material: Stainless Steel Seal: PTFE, EPDM, NBR seat Media: Milk, Soft Drink, Water, etc |
5.ZFEX2W Diaphragm Explosion Proof Solenoid Valve
 EX2W Diaphragm Explosion Proof Solenoid Valve |
Size Range: 3/8″ to 2″ Pressure Range: 0.0~1.0MPa Material: Stainless Steel Seal: PTFE, EPDM, NBR seat Media: Milk, Soft Drink, Water, etc |
What is an Explosion Proof Solenoid Valve?
An explosion-proof solenoid valve must have a coil or enclosure that is able to contain any explosion originating from within the coil or housing and prevent any internal spark from igniting any combustible gas, vapors or particulates in the surrounding environment that could cause a much larger explosion.
There are a number of standards for classifying equipment for hazardous environments. The most common we see are; NEMA (National Electrical Equipment Manufacturers Association (USA)), IEC Ex (International Electrotechnical Commission Explosive (global)) and ATEX (ATmosphères EXplosibles (EU)). If you are purchasing an explosion-proof solenoid valve be sure you see one of these marks on the valve, which may vary depending on which standard was followed.
NEMA has four hazardous location enclosure ratings (7-10) which correspond to specific environments (indoor/outdoor) and materials (explosive gases and particulates). NEMA follows the NEC (National Electric Code) Divisions System for Gas & Dust Groups. The IEC Ex & ATEX have a Zone System for Gas & Dust Groups. They cover many of the same materials but are laid out differently.
6. ZF07 Series Pilot Operated Diaphragm Solenoid Valve
 pilot operated solenoid valve |
Size Range: 1/2″ to 2″ Pressure Range: 0.03~1.0MPa Material: Brass or Stainless Steel Seal: NBR, EPDM Media: Hot Water, ThermalOil, Steam etc |
7. ZFS01A Gas Emergency Shut Off Solenoid Valve
 gas emergency shut off solenoid valve |
Size Range: 1/2″ to 1″ Pressure Range: 0.0~0.5MPa Material: Stainless Steel Seal: NBR Media: Coal gas, natural gas |
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