Industrial Purpose Permanent Bypass Thermostat is made using quality grade raw material that ensures durability of usage. The Permanent Bypass Thermostat consists of a permanently open, small bore by pass which allows partial coolant circulation around the engine block and head during warm up, when the thermostat is closed to radiator. The Permanent Bypass Thermostat finds application in various industrial sectors. Industrial Purpose Permanent Bypass Thermostat is dimensionally accurate and has high tensile strength.