• Low-maintenance proportional regulators requiring no auxiliary energy
  • Wide set point range and easy adjustment of the set point indicated on a dial
  • Three-way valve with a plug balanced by a stainless steel bellows optionally available with a plug arrangement for mixing or diverting service of liquids
  • Flow rate across the port AB almost independent of the valve plug position
  • Versions with double adapter for either installing a temperature limiter or a second control thermostat



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