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Yo dwe enstale yon valv chèk kote ki endike sou plan yo oswa jan sa espesifye. Kò valv la dwe fòme asye galvanised soude pou elimine twou sab ak twou soufle. Tout pati k ap travay yo dwe asye pur, eksepte plak kole kawotchou. Valv dwe rated nan 150 psi (10.3 bar). Valv chèk la dwe yon Ames Fire & Waterworks Series FPP (fen plenn) oswa FFF (fen bride)


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