Mark 74 Series – Bellows Seal Control Valve

The Mark 74 provides long-term, leak-free performance when fugitive emissions are a primary concern. The Mark 74 offers exceptional bellows life with a valve stroke that is just a fraction of that of other rising stem valves. This means Jordan Valve can use a smaller formed bellows that has minimal movement during operation.

The Mark 74 controls fugitive emissions while reducing the risks associated with toxic, corrosive, explosive, and high temperature fluids.

Description

The Mark 74 provides long-term, leak-free performance when fugitive emissions are a primary concern. The Mark 74 offers exceptional bellows life with a valve stroke that is just a fraction of that of other rising stem valves. This means Jordan Valve can use a smaller formed bellows that has minimal movement during operation.

  • Long bellows life—In lab tests the Mark 74 exceeded 2 million cycles with no bellows failure
  • Short stroke—Valve stroke is just a fraction of other rising stem valves allowing for minimal movement during operation
  • Fully packed back-up seal for additional assurance. A secondary chamber of multiple packing rings provides extra leakage protection
  • Detection/monitoring port—A gauge can be mounted to verify bellows performance

Data Sheet
Mark 74 Series Data Sheet

I & M
Mark 74 Series I & M

Overview
Jordan Valve Product Guide
Jordan Valve Product Guide – A4


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