Types of Solenoid Valve – Explosion Proof Solenoid Valve – Solenoid Valve with Timer

Jerry — Wed, 29 Dec 2021 05:17:29 +0000

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.