REPAIR KIT OPTIONS FOR THE APOLLO PRESSURE VACUUM BREAKER (PVB) FOR THE 1" SIZE ONLY.
THIS MODEL IS DISTINGUISHED FROM THEIR OTHER PVB'S BY THE GREEN PLASTIC CANOPY.
APOLLO OFFERS A COMPLETE INTERNAL KIT BUT IT WOULD BE LESS EXPENSIVE TO BUY A NEW ONE AND TAKE THE PARTS FROM IT TO PUT INTO THE ONE YOU HAVE.