B3151-01B21GW is an add-on valve with 1/8” female NPT outlet for use with multi feed lubricators:
Electro Manual
B4662 B4663
B3152 B3153
B3192 B3193
B5160 B5161
B5175 B5176
This Add-On Sight Feed Valve features vented sight chambers to ensure proper flow and prevent airlock. The unit withstands up to 125 PSI inlet to orifice pressure. It has an aluminum alloy valve body, glass sight, Buna-N seals, 1/16" diameter port, and 1/8” female NPT outlet. Valves can be joined together with the included Threadapter® and the use of an 9/16” wrench, 1/2” wrench, and 3/16” hex key.