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OEM Replacement Discharge unloaders
​CAMPBELL HAUSFELD - RIGID - ST171400AV .......... NRO-NA-120-150
CAMPBELL HAUSFELD - ST128410AV ....................... NSG7-M 100-125
CAMPBELL HAUSFELD - ST128413AV ....................... NSG18-M 95-125
CAMPBELL HAUSFELD - ST128408AV ....................... NG17-M 140-175

HITACHI COMPRESSOR .............................................. NG42-M 110-140

INGERSOLL RAND - 49816283 .................................... NG13-M-P2 140-175
INGERSOLL RAND - 32262867 .................................... NG16-P2 145-175 - 5/8"

CHICAGO PNEUMATIC - 1312100497 ........................ NG20-M-SU4-14-SST 140-175

SPEEDAIR - MI-T-M - 22-0346 ..................................... NSG13-M 95-125
SPEEDAIR - MI-T-M - 22-0270 ..................................... NG29-M 145-175

QUINCY - 112711 ......................................................... NG3-M-NF1-P1 110-125
This is a list of a few popular OEM discharge unloader valves. each of these valves are readily available in our Atlanta whse. We will continue to add more OEM replacement valves to this website.