Description
The Sanlixin ZS1DF02N4E20 stainless steel solenoid valve is a robust 2/2-way, direct-acting, normally closed valve designed for automatic control of water and other compatible fluids.
Manufactured with an SS304 stainless-steel body, NBR seals and a 20mm orifice, this ¾″ valve provides reliable automatic flow control for domestic, commercial and industrial water-treatment applications.
The valve remains closed when the solenoid coil is de-energised and opens when electrical power is supplied. Its direct-acting design allows the valve to operate from zero differential pressure, making it suitable for systems where water pressure may vary.
With a Cv of 7.6, maximum operating pressure of 10 bar and maximum fluid temperature of 80°C, the Sanlixin ZS1DF02N4E20 is suitable for reverse osmosis, water filtration, water purification, tank filling, irrigation, automatic plumbing and industrial fluid-control applications.
Features:
- Sanlixin ZS Series.
- ¾″/ 20mm connection.
- 20mm orifice.
- SS304 stainless-steel body.
- NBR seal.
- Normally closed operation.
- Direct-acting design.
- 2/2-way valve.
- Can operate from zero differential pressure.
- Maximum pressure up to 10 bar.
- Maximum fluid temperature of 80°C.
- Compact design.
- Fast and reliable switching.
- Suitable for automatic fluid-flow control.
- Suitable for water-treatment applications.
- Suitable for industrial and commercial applications.
Specifications:
- Brand: Sanlixin.
- Series: ZS series.
- Model number: ZS1DF02N4E20.
- Valve type: Direct-acting solenoid valve.
- Valve configuration: 2/2-Way.
- Operation: Normally Closed (NC).
- Connection size: ¾″.
- Nominal size: 20mm.
- Connection type: Female threaded.
- Orifice size: 20mm.
- Body material: SS304 stainless steel.
- Seal material: NBR.
- Flow coefficient (Cv): 7.6.
- Minimum operating pressure: 0 bar.
- Maximum operating pressure: 10 bar.
- Maximum fluid temperature: 80°C.
- Coil type: D type.
- Coil insulation class: F class.
- Power consumption: 220 V / 50/60 Hz and 20 W DC.
- Dimensions: 73 × 57 × 114 mm.
- Weight: approximately 1.1 kg.
Applications:
- Reverse osmosis systems.
- Domestic RO systems.
- Commercial RO systems.
- Industrial RO systems.
- Water purification systems.
- Water filtration systems.
- Automatic filtration systems.
- Water-treatment plants.
- Water shops.
- Bottled-water plants.
- Tank filling systems.
- Automatic water shut-off.
- Water dispensing systems.
- Irrigation systems.
- Automatic plumbing.
- Industrial process water.
- Commercial water systems.
- Fluid-control systems.
- Air and gas applications.
- Compatible light-oil applications.
How it works:
The valve is normally closed, meaning that it automatically remains shut when there is no electrical power supplied to the solenoid coil.
When the valve is off:
The internal valve remains closed and stops the flow of fluid.
When the valve is energised:
The electromagnetic solenoid activates the internal mechanism, opening the valve and allowing fluid to flow.
Because this is a direct-acting valve, it can operate from zero differential pressure, making it useful in applications where there may not always be pressure available to assist valve operation.









