Do safety valve opening pressure test, to reach the opening pressure value, the valve on the small holes in a large number of leaks, is not the valve body has been contaminated? This valve can not be used properly?
Does not affect the use, but should be equipped with a plug blocked to prevent the safety valve when the exhaust hole caused by the personnel or equipment risk.
It might be a drain hole. When the exhaust pipe has accumulated water, it can drain through this hole. General should be blocked, usually in use and maintenance should be open after the rotary water blocked, often water is not convenient, convenient to remove.
Can use ah, if the opening pressure does not leak can not use it
