Dome-Loaded Pressure Regulators
The BD-Series, dome-loaded pressure reducing (and backpressure) regulators can be used to control most industrial gases and liquids. By supplying a reference pressure (with compressed air or other noble gas) to the dome of the BD-Series, the pressure of the process media can be accurately controlled to your process. The reference pressure can be supplied directly, with additional manual regulator or electronically.
BD3
Dome-Loaded Pressure Reducing Regulator
The simplest dome-loaded regulator or 1:1 "mimic" valve. Pressure is applied (loaded) to the dome of the BD3 to produce an output pressure (P2) equal to the loading pressure.
BD4
Dome-Loaded Pressure Reducing Regulator with Return Spring
The BD4 is the same configuration as the BD3 except, the BD4 implements a bottom return spring for proportional band control. This is used when a "closed-Loop" or feedback to the regulator is generated.
BD6
Dome-Loaded Back Pressure Regulator
When upstream (P1) pressure needs to be controlled, the BD6 is configured with back pressure trim to create a dome-loaded back pressure regulator
BD9
Dome-Loaded Pressure Reducing Regulator
The BD9 is employed when membrane compatibility or temperature is an issue. The BD9 offers the same Cv as the elastomeric version
BD3 Drawing
BD4 Drawing
BD6 Drawing
BD9 Drawing
