The flow control and transfer category covers a wide spectrum of products designed to facilitate, control, maintain, meter, or read the flow of material through hoses, pipes or tubing. The material in question may be liquid, gaseous, or semi-solid (colloids and slurries). The following families fall within flow transfer and control: valves, valve actuators and positioners, dispensing valves, pumps, flow sensing, level sensing, density and specific gravity sensing, viscosity sensing, and miscellaneous related products.

Valves are apparatus designed to maintain, restrict, or meter the flow of materials through pipes, hoses, tubing or entire systems. They generally function by allowing flow while in their open position, and restricting flow when closed. The valve family is broken down into product areas based on the mechanism that is used to restrict flow. The following are the main valve product area: ball valves, butterfly valves, check valves, diaphragm valves, gate or knife valves, globe valves, needle valves, pinch valves (for both industrial and medical applications), plug valves, control valves (1/4 turn - isolation and multi-turn, throttling), pressure relief valves, and AC and DC solenoid valves.

Dispensing valves are a separate category from regular valves. While regular valves work to transfer material throughout a system, dispensing valves are designed to meter a specific amount of material and deposit said material into another medium, area, or locale. As with regular valves, dispensing valves are divided into areas based upon their mechanism of transfer. Products within this category include: single component dispensing valves, positive displacement valves, spray valves, diaphragm valves, pinch valves, and needle or spool valves.

Pumps are used in flow transfer and control to move a material (liquid, gas, or colloids and slurries) from one area to another. Major product areas include cantilever, centrifugal, dosing diaphragm, dosing syringe, double diaphragm, gear (positive displacement), jet, lobe, metering, peristaltic, piston / plunger, rotary vane, screw, turbine, vacuum and waste pumps.

Flow transfer and control sensors include a wide variety of flow controllers, switches, meters and detectors. They are designed to analyze flow quality, meter flow and transfer rates, or detect leaks of either liquids or gases.