ASME A112.19.7 pdf download Hydromassage bathtub systems 1.1 This Standard specifies general requirements, test methods, and markings for whirlpool and air-jettedbathtubs and suction fittings used in hydromassage bathtub systems that incorporate a bathtub andcirculation pump.The circulation pump can be with or without(aa piping system; and(b) induction of air (which can be achieved by integral suction or through an air pump)....