AVG Solar Rated One Way Non Return Check Valve 15mm 1/2" for Solar Hot WaterOverview Australian Valve Group (AVG) High Performance Solar Rated 15mm (1 2") Non return Check valve. This check valve is rated to 250 and intended for solar hot water use. Watermark approved and in accordance with AS1628. Visit our store to view our other check valve options. Technical Details Manufacturer: Australian Valve Group (AVG) Model: HTCV 15F 15C 250 LF Specifications: Maximum Working Temperature: 250C Thread Size: 1 2" BSP (15mm) Female FI