Mark 87 Series - Piloted Temperature Regulator
The Mark 87 piloted temperature regulator is the sliding gate valve engineered to provide wide rangeability and greater accuracy for a variety of temperature control applications. Utilizing the same technology as the industry-leading, self-contained Mark 80 Temperature Regulator, the Mark 87 is a piloted temperature regulator that offers quality and performance unparalleled by any competitive product on the market.


  • 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