Armstrong Circulation Pumps. Model:3 x 1.5 x 10 4030 SN: 641019, 641020 and 641021. Pump Capacity: 114 US GPM 68′ Motor: 5hp 1800RPM, 3 ea. (7074L202489047) Pumps appear to be new/unused. They are dirty from sitting outside. Unknown if repairs may be required. 7074L202489047