High Pressure Back Pressure Regulating Valve

The Mark 5800HP Series is a high pressure, back pressure regulator designed to maintain upstream pressure of gases and liquids. As a compact, lightweight product, it is well suited for applications where space and weight are at a premium. The T-bar adjusting handle allows for a lighter spring and more sensitive regulator than models with a fixed knob. USDA and FDA approved soft goods available upon request.

  • Higher pressure vessel venting
  • High pressure injection applications
  • Gas/liquid sampling stations
  • Compressor skids
  • Test standards


  • Gas chromatography
  • Flame ionization detectors
  • Industrial controls
Features & Benefits
  • Complete barstock construction – ensures body/trim material quality and facilitates usage of alloy materials
  • Full pressure rating across entire temperature range – maximum setpoints available at maximum pressures
  • Proof-tested to 12,000 psi (827 bar) – nearly five times pressure rating, ensures safety when working with high pressures

Seat Type: Teflon (standard), PEEK, Delrin

Sizes: 1/2″, 3/4″, 1″ (DN15, DN20, DN25)

End Connections: Threaded, socket weld, flanged

Body Materials: 316L Stainless Steel, Hastelloy Cl, Monel, Alloy 20, others

Cv (Kv): 1.0 (0,9)

Spring Range: 400 – 5000 psi (27,6 – 345 bar)


ATEX Certified

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