High Flow

The Mark 501 and Mark 502 Series are used in applications that require a higher Cv (Kv) rating without using the next highest line size. The high flow Mark 501 has Cv's (Kv's) as high as 50 (43) and the super high flow Mark 502 has Cv's (Kv's) up to 70 (60). The sliding gate seats help reduce the build-up commonly associated with high flow back pressure regulators.

Features & Benefits

Jordan’s unique self-operated sliding gate back pressure regulator features the sliding gate seat:

  • Shorter stroke than a globe or plug-style valve: faster response, smaller and lighter weight than a globe-style regulator, less build-up
  • Straight through flow: less turbulence, erosion or noise, improved rangeability, longer seat life
  • Ease of maintenance: interchangeable seats and Cv’s, fewer spare parts, self-cleaning seats, no gaskets or o-rings

Sizes: 1-1/2″ – 2″ (DN40 – DN50)

Cv (Kv): up to 70 (up to 60)

Diaphragm: Jorlon, Stainless Steel, Buna-N, Viton

Setpoint: 0.5 to 150 psi (0,03 to 10,3 bar)

Body Material: Ductile Iron, Bronze, Carbon Steel, Stainless Steel

End Connection: Threaded, Flanged, Socket Weld, Butt Weld


Benefits of the Sliding Gate

Read on to learn the benefits of owning sliding gate regulators and control valves.

Sliding Gate Infographic

Download this infographic on the benefits of the sliding gate in regulators and control valves.

Sliding Gate Valve Overview

Watch this video for an overview of Sliding Gate Pressure Regulators and Control Valves

Sliding Gate Videos

Learn more about the sliding gate seat design by watching these videos.


CRN Number
Mark 501/502: 1-1/2″ & 2″

ATEX Certified

Jordan Valve Express

Size: 2″

Details: SST/Jorlon diaphragm, standard Cv, FNPT end connection, 150# ANSI flange for CS or SST bodies, DIN flanges for CS or SST bodies (DN25 to DN50).

Some exclusions may apply

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Mark 50 Series

Self-Operated Back Pressure Regulator

Mark 51 Series

High Sensitivity

Y-Type Strainers

Line Strainers

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