Ball Valves
Quarter turn valve with hyperbolic flow characteristic, low pressure drops and reliable sealing. Poor flow control, typically used in on/off applications with very little to no suspended solids. Multiport valves used for diverting, splitting lines and mixing.
Butterfly Valves
Quarter turn valve with equal percentage type flow characteristic. Moderate flow control, can be used for both on/off and modulating service. Good tolerance to suspended solids but not recommended for use with slurries or debris.
Diaphragm Valves
Multi turn valve with linear type flow characteristic. Good flow control, can be used for both on/off and modulating service. High tolerance to suspended solids, excellent for slurry service and high resistance to clogging due to debris. Bonnet can be removed for cleaning out valve.
Globe Valves
Manual control valve with rising plug. Very good flow control with a linear flow characteristic. Resistance to suspended solids and not recommended for use in lines with possible debris.
Constant Flow Valves
Automatic flow control valve that can be manually adjusted to meet different flow rates. Adapts to changing line pressure to provide a steady flow rate in the downstream piping. Not recommended for use with high viscosity fluids, fluids that contain debris or suspended solids, or fluids with high specific gravities. Accurate to +/- 6% of desired flow rate, can be field adjusted while the valve is installed.
Ball Check Valves
Swing Check Valves
Backflow prevention valve operated with swing arm and disc assembly. Requires backpressure to seal, can be installed horizontally or vertically. Optional spring assist or lever and weight assemblies are available for water hammer mitigation. Features removable bonnet for easy cleaning/clearing of obstructions. More tolerant to suspended solids and debris than ball checks.
Waffer Check
Backflow prevention valve operated with a disc assembly. Fits between two flanges with no valve bolting required. Can be installed both horizontally or vertically and without spacers. Available with spring assist for quick closing. Low sealing/opening pressure and minimal head loss.
Gate Valves
Full port valve with a sealing plug that lifts fully out of the flow path when the valve is open. Includes a drain plug at the base of the valve for cleaning out accumulated sediment. Minimum head loss and high resistance to clogging due to debris. Good resistance to suspended solids and poor flow control.
Pressure Relief Valves
Full port valve with a sealing plug that lifts fully out of the flow path when the valve is open. Includes a drain plug at the base of the valve for cleaning out accumulated sediment. Minimum head loss and high resistance to clogging due to debris. Good resistance to suspended solids and poor flow control.
