RMC Auto Air Vent Valve – Automatic Air Release for Solar

Reliance Worldwide RWC

The RMC Auto Air Vent is a high-quality automatic air vent valve engineered to continuously remove trapped air from closed-loop solar hot water systems, wetback lines from ULEB wood fires, heating circuits, radiators, and underfloor heating setups. By automatically venting air as it accumulates, it prevents airlocks, improves circulation efficiency, reduces system noise, and protects pumps, valves, and pipes from corrosion and cavitation damage.

Key Features & Specifications

• Body: Forged brass (dezincification resistant)
• Cap: High-impact polymer (impact-resistant)
• Internal Components: Stainless steel float & seat
• Maximum Operating Pressure: 10 bar (1000 kPa)
• Maximum Temperature: 120°C
• Connections: ½” BSP male thread (standard), with optional ¾” or other adaptors
• Flow Capacity: High venting rate for rapid air removal
• Shut-Off: Automatic float seals when water reaches the valve
• Maintenance: No regular servicing required; cap can be unscrewed for inspection
• Certifications: WaterMark approved, compliant with AS 4020 (potable water contact)

Why Choose RMC Auto Air Vent?

Trapped air is one of the most common causes of poor performance and damage in solar and wetback systems. This valve automatically expels air without manual bleeding, maintaining full system efficiency and extending component life. Its brass construction and high-pressure rating make it suitable for demanding NZ solar and heating applications.

Common Applications

• Solar hot water systems (flow/return lines from collectors to cylinder)
• Central heating circuits, radiators, and underfloor heating
• Closed-loop hydronic systems require automatic air elimination

Installation Notes

Install at the highest point in the system (e.g., top of solar loop or wetback line) with the valve upright. Ensure the cap is accessible for occasional inspection. Professional plumber recommended for G12/AS1 compliance in NZ.

Order today – in stock at Ice Solar Christchurch with fast NZ-wide shipping. Pair with our Reliance Solar Transfer Valve, insulated copper pipe, or Peter Cocks cylinders.

RWC – Air Vent AVHTS-15