42-37/42-39 - Flow and differential pressure regulator

The Type 42-37 (and 42-39) self-operated differential pressure and flow regulators for installation in the inlet flow pipe or the return flow pipe are designed to work in district heating systems or large heating networks.

The regulators consist of a valve with adjustable restriction to adjust the flow rate and an actuator with two operating diaphragms. The regulators limit the flow rate. The set point for the flow rate is adjusted at the valve. The set point for the differential pressure or downstream pressure is adjusted at the diaphragm actuator. The largest signal is always used to control the regulator.

• Nominal diameters: DN15 to DN250
• Pressure classes: PN16 to PN40
• Materials: Cast iron, Spheroidal graphite iron, Cast steel, Stainless Steel
• Temperature range: +5°C to +150°C
• Differential pressure or pressure set points: 0.1 to 5 bar