Reliance Solar Transfer Valve 20mm – 50-70°C Adjustable Yellow Cap

Reliance Worldwide RMC

The Reliance Solar Transfer Valve (model TVX2008, 20mm) is engineered for solar water heater installations with a booster heater (gas or electric). It redirects water below the set transfer temperature to the booster while allowing fully heated solar water into the supply line, ensuring efficient and safe hot water delivery.

Key Features & Specifications

• Size: 20mm (¾” Male BSP Thread fittings supplied)
• Adjustable Transfer Temperature: 50°C – 70°C (factory set at 60°C)
• Transition Zone: ±3°C either side of the set temperature
• Hot Supply Temperature Range: 60°C – 99°C
• Materials: Lead-free forged brass body, DZR brass internals, Viton® seals, stainless steel springs, Polysulfone piston, stainless steel strainers
• Max Static Pressure: 1600 kPa
• Flow Rate: Minimum 4 L/min, Maximum 43 L/min
• Integrated: Non-return valves prevent cross-flow, strainers protect from impurities, union connections for easy servicing
• Certifications: AS 1357.2, WaterMark (WMKA0938), Lead-free compliant (National Construction Code), suitable for potable water
• Dezincification resistant

Why Choose This Valve?

Designed specifically for solar systems with high inlet temperatures, it prevents cross-flow between outlets and ensures the booster only activates when needed. The tamper-proof adjuster key avoids accidental changes, and union fittings simplify installation and maintenance.

Common Applications

• Solar hot water systems with a booster heater
• Flow/return control from solar collectors to the cylinder
• Compatible with wetback ULEB fire integration (e.g., Woodsman or Masport models)
• Gravity-fed or low-pressure solar setups

Installation Notes

Install per National Construction Code Volume Three – Plumbing Code of Australia, AS/NZS 3500, and OEM guidelines. Union connections allow easy removal for strainer servicing. Professional plumber recommended for G12/AS1 compliance in NZ.

RWC Product MIX11091 / TVX2008