TECH STEROWNIKI ZO-20 Solenoid Shut-off Valve for Water DN20 3/4 inch 230V AC

Uncontrolled water flow in heating and plumbing systems can cause expensive damage and inefficient operation. The TECH STEROWNIKI ZO-20 solenoid shut-off valve delivers dependable on/off control for water in central heating, floor heating, and domestic hot water installations. Its normally closed design stops flow when de-energized, providing fail-safe protection, while the brass body and EPDM seal ensure durability and compatibility with potable water.

Who is it for

This valve is ideal for installers and homeowners who need automated water shut-off in heating or plumbing systems. It integrates seamlessly with smart home controllers or simple thermostats to manage zones, prevent leaks, or enable scheduled operation.

Main features

• Normally closed (NC) operation for fail-safe shut-off
• DN20 nominal diameter with 3/4" G (BSP) threaded connections
• Brass body and EPDM seal for long service life and corrosion resistance
• 230V AC coil with low 8 W power consumption
• IP54 ingress protection for indoor installation in damp areas
• 1.5 m cable for flexible wiring

Specifications

• Valve type: Solenoid shut-off valve
• Intended medium: Water
• Nominal diameter: DN20
• Connection thread: 3/4" G (BSP)
• Operating voltage: 230V AC
• Power consumption: 8 W
• Valve state: Normally closed (NC)
• Body material: Brass
• Seal material: EPDM
• Max. operating pressure: 10 bar (1 MPa)
• Max. medium temperature: 90 °C
• Min. medium temperature: 0 °C
• Ingress protection: IP54
• Cable length: 1.5 m
• Application area: Central heating, floor heating, domestic hot water

Tips

For optimal performance, install the valve in a location protected from direct water spray and ensure the coil is not continuously energized for extended periods beyond its duty cycle. Use a suitable strainer upstream to prevent debris from affecting the seal.