2" Single Groove A Section 4L Sheave with 3/4" (0.750") Keyed Bore - AK20-3/4 Jumper Hoses then the main line coming

then the main line coming off the compressor pump is connected to it

• Accuracy: 3-2-3% per ANSI grade B

• Compatible with pressure switches that use unloader lines

• Open Drip Proof (ODP) Enclosure

The bottom one

2" Single Groove A Section 4L Sheave with 3/4" (0.750") Keyed Bore - AK20-3/4 Jumper Hoses then the main line comingCast Iron 2" Single Groove Belt A Section 4L V Style for 3 4" Keyed Shaft Masterdrive high quality cast iron single groove 2" pulley for A section 4L belts. This pulley is designed to fit a 3 4" keyed shaft and features dual set screws to ensure a completely secure fitting. Most pulleys that are similar to this only have one set screw, making them less reliable in many working conditions. This pulley is designed to be used with A Belts (also known as