Description

Heat Pump 28mm Anti Freeze Valve

The 28mm Anti Freeze Valve protects heat pump systems from freezing temperatures and costly damage. This 28mm Anti Freeze Valve activates automatically when temperatures drop to 3°C, releasing water to prevent ice formation within the system.

You can install this valve on water-based air source heat pump systems, where freezing conditions can damage pipework and components. The valve closes again at 4°C, ensuring controlled operation without unnecessary water loss.

Manufactured from high-quality DZR brass, this valve delivers long-term durability and resistance to corrosion. Its 28mm compression connections allow quick and secure installation, making it ideal for both new installations and system upgrades.

Technical Specifications

Product Type: Anti Freeze Valve
Item Code: RNAFV-28
Brand: MB (Midbrass)
Connection Size: 28mm Compression
Material: DZR Brass
Activation Temperature: Opens at 3°C / Closes at 4°C
Max Working Pressure: 10 Bar
Fluid Temperature Range: 0°C to 75°C
Ambient Temperature Range: -30°C to 60°C
Seal Material: EPDM
Spring Material: Stainless Steel 304

Installation Guidance

Install the valve vertically on horizontal pipework for correct operation. Use this valve only in water-based systems without glycol, as it is designed to discharge water when freezing conditions occur.

Why This Valve Matters

Prevents pipe bursts and system damage
Protects heat pumps in cold weather conditions
Reduces repair costs and downtime
Provides automatic protection without power
Essential for non-glycol heating systems

FAQs

Q: What does a 28mm Anti Freeze Valve do?

It protects heating systems by releasing water when temperatures drop, preventing freezing and damage.

Q: At what temperature does this valve operate?

It opens at 3°C and closes at 4°C automatically.

Q: Can this be used with glycol systems?

No, it is designed for non-glycol water-based systems.

Q: Where should this valve be installed?

Install it vertically on horizontal pipework for proper function.