This is a large capacity pilot type temperature control valve. It has a larger capacity compared to the direct impingement type and can be used in places where here is a big difference in pressure before and after the valve. It is fit for temperature control of large storage tanks, and is also used in hot water tanks or thermal exchangers. The range of temperature adjustment is categorized by 20¡É and there is very little variance in temperature. Installation is also very simple as it does not require an auxiliary power source such as electricity. The connecting pipe is covered with a flexible tube to protect from damage.