Self Operated Regulators

Flow & Differential Pressure Regulators

42-20 - DP Regulator (Fixed Set-Point)

Fixed Set Point: 3, 4, 6 or 7 psi (0.2, 0.3, 0.4, 0.5 bar)

Size: 1/2" to 10"

ANSI Class: 125 to 300

Temperature Range: to 660oF ( to 350oC)

The Type 42-20 (and 42-25) self-operated differential pressure regulators are designed to work in large heating systems and general industrial applications. The differential pressure to be controlled is transmitted to the spring-loaded operating diaphragm in the actuator and converted into a positioning force to move the valve plug. The regulators control the differential pressure according to the adjusted set point.

The Type 42-20 is a differential pressure regulator for installation in a bypass pipe or short-circuit pipe with a fixed set point determined by the springs in the actuator.

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Features & Benefits

  • Low-noise, medium-controlled proportional regulator requiring little maintenance
  • Single-seated valve with a plug balanced by a stainless steel bellows or a diaphragm
  • Suitable for circuit water, water/glycol mixtures, steam and air as well as other liquids, gases and vapors, provided these do not affect the characteristics of the operating diaphragm

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