VALVULA MARIPOSA 367
PVC butterfly valve 2-1/2pulg., through 12 shall be a wafer type designed to fit between two flanges and properly positioned by the flange bolting. Valve body and disk shall be constructed of
PVC. Seals may be either FPM or EPDM. Shaft material shall be stainless steel. Disc seat must be of a dynamic design, creating a tighter seal as pressure increases. The valve must be
equipped with an index plate to allow positioning of the disc and permit position locking.