valves, pipe fittings, ball valves, gate valves, rotary disc valves of the type butterfly, solenoid valves, safety valves, check valves, valves, pumps, appliances, piping steel piping, cast iron, sediment filters, expansion joints, bellows, axial expansion joints, steam traps, aeration plunger, cast iron, electric actuators, pneumatic actuators, pneumatic valves