. The pump is ideal for home solar thermal systems or for circulation pump application where conventional power is not available. Horizontal inlet and outlet with rotating cap, easy installation . Maximum circulating water temperature: approximately 100°C/212°F. Cannot be immersed in hot water over 100°C/212°F. Very long life. Low consumption and low noise. Input / Output: 1/2 “plug Suitable for 1/2” NPT and BSP. We tested it.