Maintain a Constant Differential in Process Pressure

Designed to track and maintain a constant differential with fluctuations in process pressure.

Patent pending isolating pressure tracking valve that will maintain a positive differential pressure between a reference input pressure (seal chamber / vessel pressure) and an output pressure (typically API Plan 53A) with the connection of a suitable supply (Typically nitrogen at a pressure greater than maximum operating barrier pressure). The device has an integrated isolation unit that will provide a physical barrier between product (seal chamber / vessel fluid) and the device.


  • Self regulating – Tracks pressure to maintain an optimum double seal environment
  • Quick response – Transient and upset conditions handled with ease
  • Simplicity – A compact alternative to complex seals & systems
  • Factory set – No operator intervention required. Unit is supplied pre-set
  • Ergonomic – Simple in line connections and mounting

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