Mark 508MM Series Spring Loaded Back Pressure Valve
Self-actuated, Direct-operated, Sizes: 1" - 10" (DN25 - DN250)
The Mark 508MM Series spring loaded back pressure valve regulates upstream pressure and have excellent throttling characteristics to maintain the desired set point. This self-actuated, direct-operated valves are available in 1" up to 10" (DN25 through DN250) body sizes. This spring loaded back pressure valve features a construction capable of sustaining rugged use and their construction makes them easy to install and to maintain.
- Available with ISA Face to face dimensions
- 3 different trim sizes for each body size, to meet a wide range of applications
- Quick-opening flow characteristic
- Trim features: Metal or soft tightness, single or double ported
- Leakage classes range from II up to VI (according to ANSI/FCI 70-3)
- External pressure sensing
- Stem tightness packing is available as elastomeric (lip seal) or Graphite gasket
- Wide range of actuators according to the requested regulation range
- Wide range of elastomeric diaphragms
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