It is sometimes desireable to isolate extremely sensitive, hazardous, or toxic fluids from direct contact with hydraulic fluid in the event of a diaphragm failure. Double diaphragms with acontained inert fluid between them cen be used to offer optimum process protection.

A remote head can be fitted to a PULSA Series pump for the controlled metering of very high or low temperature fluids. The remote diaphragm isolates the fluid in a controlled environment that is separate from the pumping mechanism. This design, equipped with a metal diaphragm, permits safe, isolated metering of radioactive liquids.

Special slurry valve assemblies are available for abrasive service. They feature high clearances and flexible elastomer seats that prevent the build-up of solids. They are designed for slurries such as carbon black, diatomaceous earth, lime, etc.

Placing the inlet and outlet check valves remote from the pump and using the porduct as the pulsing medium between the diaphragm and valves permits economical high or low temperature metering.