4.5" Single Groove Pulley fits B Section V-Belt 5L with 5/8" Sheave Bushing BK47H Single Phase • Construction: Solid Brass

• Construction: Solid Brass

• 1/8" Side Unloader Port (measures about 3/8" in diameter)

This valve usually has a 1/4" plastic or copper line that runs to the check valve or the head of the compressor

1/4" COMPRESSION UNLOADER VALVE CONNECTION

The unloader equipped on this switch is used to unload the air pressure off the head of the compressor when the compressor shuts off

4.5" Single Groove Pulley fits B Section V-Belt 5L with 5/8" Sheave Bushing BK47H Single Phase • Construction: Solid BrassCast Iron 4. 5" Single Groove Belt B Section 5L Pulley w 5 8" Sheave Bushing Masterdrive single groove 4. 5" cast iron pulley sheave with 5 8" H bushing for B section belt is a high quality 2 piece pulley that measures 4. 5" outside diameter and is designed to be used with an H style bushing. This bushing inserts into the center of the pulley and slides over the shaft, as you tighten down the bolts on the H bushing it will tighten down on the shaft.