Profile: R. B. Mosher Co. provides products and services to the petrochemical, oil, power and municipal industries. We offer steam traps, filters, valves and pumps. Mosherflo SPT pumps are self-priming trash pumps, which are ideally suited for industrial and municipal solids-handling applications, where large or stringy solids may be present. Our resilient-seated butterfly valves are available in wafer or lug styles.