Mark 80 Series – Self Operated Temperature Regulator

The Mark 80 Series Temperature Regulator features the advanced sliding gate seat technology pioneered by Jordan Valve. Using the Jordan Valve sliding gate seat technology, the Mark 80 temperature regulators have the signature straight-through flow, short-stroke that is 1/3 of a globe-style valve, quiet operation and tight shutoff. The Jordan Valve Mark 80 has high rangebility and extremely accurate regulation. The proprietary Jorcote seat material is extremely hard (@RC85) with a low coefficient of friction that delivers outstanding performance and long service life.

Jordan Valve’s unique Seal Welded Actuator (SWA), used in conjunction with Jordan’s sliding gate seat, provides exceptional accuracy and long life in a direct operated industrial temperature regulator. The Jordan Valve Mark 80 is the most accurate and durable industrial temperature regulator available in the market today.


  • High rangeability – Controls flows from 10% to 90% of rated capacity
  • Available with capillaries up to 100 feet in length
  • Sliding gate seats provide straight-through flow for reduced turbulence and quiet operation
  • Short stroke for fast response and accurate regulation
  • Easily interchangeable CV’s
  • Tight shutoff