Seat, plug and stem material is 316 stainless steel. Shut-off is dependent o installed service requirements. Class II, IV or V shut-off is available on either both of the two inner valve ports.

Bonnet options include the standard bolted configuration; an extension bonnet for extreme temperatures; a lube/vented bonnet for purge, leak-off or lubricator connections; bellows bonnets for zero exterior leakage; and oversized bonnets when required.

A variety of packing and gasket options are offered to meet the requirements of a range of process conditions. Packing options include PTFE V-Ring, PTFE shredded, high temperature carbon graphite, PTFE aramid and high temperature Inconelâ glass. Choices for gaskets include PTFE, high temperature carbon graphite and nitrile rubber bonded non-asbestos.

Common application include the circulation of water, oil, sea water or other liquids in heating/cooling systems where there is a heat exchanger bypass control. They can also be used in blending systems and on/off selector systems.

These relatively low-cost valves are designed for bypass temperature control systems in industrial, utility and marine applications. They require very low operating forces and can be used with smaller actuators, further reducing system cost. Leslie rotary valves allow twice the overall flow capacities of globe types, resulting in extremely low pressure losses and allowing the use of smaller sizes.
Superior features include smoother throttling, greater accuracy, non-fouling, non-sticking, compact size and reversible action.