6" Triple Groove Pulley fits B Section V-Belt 5L with 5/8" Sheave Bushing 3BK62H 2.5" Rapidair 50400 3/8" Male NPT

Rapidair 50400 3/8" Male NPT Elbow

this way when it starts there is no pressure on the piston and the compressor is able to start load free

On the side of the valve

the unloader valve will kick in and your compressor will pump air through the muffler out to atmosphere until your air tank pressure gets down to 110 PSI then the unloader will shut

6" Triple Groove Pulley fits B Section V-Belt 5L with 5/8" Sheave Bushing 3BK62H 2.5" Rapidair 50400 3/8" Male NPTCast Iron 6" Triple Groove 3 Belt B Section 5L w 5 8" Sheave Bushing Masterdrive triple groove 6" cast iron pulley sheave with a 5 8" H bushing for B section belts is a high quality 2 piece pulley that measures 6" outside diameter and is designed to be used with an H style bushing. The 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 making this