Mark 60 Series Pressure Regulators

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 Low Flow Control Valves > Mark 708 Double Packed Series



Mark 708 Double Finned Series The Mark 708 Double Packed is an alternative to a bellows stem seal, and is used when standard packing will not adequately contain the controlled media.

The optional bonnet features a double packing arrangement separated by a lantern ring. With a double packed bonnet, lubricant is pumped into the packing sets, supplying a tight seal similar to that provided by a bellows stem seal.

The double packed bonnet is an excellent choice when service conditions could cause damage to a bellows assembly.

Features & Benefits




Ideal for applications where service conditions can damage a bellows assembly
Features standard bonnet port for use in lubricating the packing for added protection against leakage, or for use as a detection port for monitoring potential fugitive emissions
For use in R & D, pilot plants and low flow process applications