GROCO Backing Block f/2" 2-1/2" Seacocks [BB-3] Oversized Ports: 3/4"

Ports: 3/4"

Reduces unregulated city water pressures that can run as high as 125 psi down to a safe 45 psi - automatically

Same as Cole Hersee part number 55025-01

For light and medium duty

GROCO Backing Block f/2" 2-1/2" Seacocks [BB-3] Oversized Ports: 3/4"Backing Block for 2" & 2 1 2" Seacocks Features: Each size fits multiple seacock sizes Press threaded brass inserts into the hull side of the backing block into the holes that match the seacock flange Rigid 1 2" thickness provides secure installation but is flexible enough to conform to minor hull curvature Will not swell or absorb moisture Made from an environmentally friendly PVC foam specially formulated for marine applications Specifications: