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3/4inch brass 2 ways frost valveBody material: BrassMax. working pressure: 10 barAmbient temperature range: -30–90°COpening temperature: 4°CClosing temperature: 8°CAccuracy: ±2°CConnections: G3/4" or NPT3/4" , one inlet – male thread , one outlet – male threadNet weight: 0.14 KGSGross weight: 0.15 KGS When the water temperature below 8?. This causes the sensor to move and open a tiny passage so that water can drain out, this prevents water from freezing inside the pipe. When the temperature below 4 ?,the valve opened completely. The water will be flow out from the solar panel . When the temper