Compare Quick view AUTO PILOT AUTO PILOT | FLOW DETECTOR ONLY | 19007 MSRP: Was: Now: $106.88 AUTO PILOT | FLOW DETECTOR ONLY | 19007 OPTIMUS # 2810-006AUTOPILOT # 19007 THIS IS A FLOW SWITCH ONLYTHIS IS A HARWIL FLOW SWITCH - ITS ONE OF THE Q12DS VERSIONS BOTTOM THREADS ARE 1/2" MPT(ACTUAL DIAMETER IS ABOUT 7/8") TOP... Add to Cart Add to Cart