Replace the relief valve seat with a new seat if required, or clean the existing seat.
Replace the relief valve seat with a new seat if required, or clean the existing seat.
如果需要，则用新的阀座进行更换，或者清洗原有的阀座。
Replace the relief valve seat with a new seat if required, or clean the existing seat.
如果需要，则用新的阀座进行更换，或者清洗原有的阀座。