Reliance Solar Tempering Valve 20mm – 30-65°C Adjustable Orange Cup

Reliance Worldwide RMC

The Reliance Solar Transfer Valve TVX2002 20mm is designed for solar water heater installations with a booster heater (gas or electric). It redirects water below the set transfer temperature to the booster heater inlet while allowing fully heated solar water to enter the hot water supply line, ensuring efficient operation and energy savings.

Key Features & Specifications

• Model: TVX2002 Heat Guard Ultra
• Size: 20mm (¾” connections)
• 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
• Maximum Static Pressure: 1600 kPa
• Flow Rate: Minimum 4 L/min, Maximum 43 L/min
• Integrated Features: Non-return valves to prevent cross-flow, strainers to protect from impurities, union connections for easy servicing
• Certifications: AS 1357.2, WaterMark approved (WMKA0938), lead-free compliant
• Dezincification resistant

Why Choose This Valve?

Engineered for high-temperature solar applications, it ensures the booster only activates when necessary, maximising solar contribution. Tamper-proof adjuster key prevents accidental changes, and union fittings simplify installation and strainer maintenance.

Common Applications

• Solar hot water systems with a gas or electric booster heater
• Flow control from solar collectors to the cylinder/hot water supply
• Compatible with wetback ULEB fire integration and hybrid solar setups

Installation Notes

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

RWC Product MIX20XU / MIX11130 / TVX2002NZ