The valve lumen stagnant medium due to temperature change son abnormal booster, medium pressure promote seat from the sphere,
achieve automatic pressure release the effect, after pressure relief valve seat to be automatic reset.
Twist the drainage device can check seat if an out, also can reduce emissions lumen stranded content of the valve media on pollution.
In the working status, the valve is in full open or seated condition, can replace the stem the stuffing box.
Seat in addition to general seal outside, especially the set under seal structure, can play for sealing ring damage son appear when the leak emergency care function. |
