expension tank就是為了緩解這樣的水壓波動。而熱水器上的減壓閥隻是當水壓達到設置的壓力(一般是90psi)時才打開,它並不能緩解水壓波動。
expension tank就是為了緩解這樣的水壓波動。而熱水器上的減壓閥隻是當水壓達到設置的壓力(一般是90psi)時才打開,它並不能緩解水壓波動。
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