EP Anti Freeze Valve M x M

The Embrass Peerless Anti-Freeze Valve 1″ M x M is designed to protect water-filled air source heat pump systems from freezing conditions. Featuring male x male threaded connections, it automatically discharges water when system temperatures fall to critical levels, preventing ice formation and protecting pipework and heat pump components from damage.

Manufactured from durable brass with a stainless-steel spring, this valve provides reliable, maintenance-free frost protection for external heat pump pipework and plant areas.

Why it suits trade counters:

• Popular 1″ threaded connection for heat pump installations
• Essential frost protection for monobloc ASHP systems
• Fully mechanical operation – no power or controls required
• Robust, installer-friendly design for long service life

Key specifications:

• Max operating pressure: 10 bar
• Opening temperature: 2°C
• Closing temperature: 4°C (±1°C accuracy)
• Materials: brass body with stainless-steel spring

Anti-freeze valves are widely used in water-based heat pump systems to automatically drain water as temperatures approach freezing, helping prevent costly system damage and downtime.