Negative Bias Valves & Regulator

Differential pressure regulators and valves are used in applications to maintain a constant (and specific) pressure differential between the outlet (P2) pressure of the regulator and the signal pressure loaded on the diaphragm. The desired differential can be set with a spring and an air sense line can be added to the dome of the regulator to constantly follow the pressure up and down, while always maintaining the same difference in pressure.

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Additional information

BS2	Pressure Reducing, Differential, Using a sealed differential chamber instead of the simple BS1 chamber, produces a differential pressure reducing valve. Perfect for seal pressurization applications.
BS2-3	Negative Bias Differential, By placing the spring in a state of tension rather than compression, we produce a negative bias relative to the reference pressure or a negative differential regulator.
BS8	Positive Differential Back Pressure, By using a positive bias on the spring in compression with back pressure trim, we produce a positive differential back pressure regulator.
BS8-3	Negative Differential Back Pressure, Similarly, by utilizing the spring in a negative or tension mode along with back pressure trim, we create a negative differential back pressure regulator.