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Pneumatic Pressure Control

PP901

PP901

PP901 pneumatic valve controls the pressure of the air delivered to pneumatic control systems. Models available for single-pressure systems or two-pressure systems (Day/Night or Summer/Winter) requiring two independently regulated pressure settings.

PP902

PP902

PP902 pneumatic valve controls the pressure of the air delivered to pneumatic control systems. Models available for single-pressure systems or two-pressure systems (Day/Night or Summer/Winter) requiring two independently regulated pressure settings.

PP903

PP903

Provides proportional control of pneumatic actuators by varying the pressure between separate water pressures. Replacement devices are available for Johnson, Powers, Robertshaw, and older Honeywell pneumatic pressure controllers.

PP904

PP904

One- or two-pipe, direct- or reverse-acting, low- or high-capacity controller used with pneumatic actuators in central fan installations. Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell devices.

PP905

PP905

PP905 is a one-pipe, direct-or reverse-acting pressure sensor, used with RP908/RP920 Controllers, to provide control of duct static, velocity or differential pressure in airflow applications. Replacement devices are available for most models.

PP97

PP97

PP97 is a one-pipe, pressure operated device, that provides proportional control of pneumatic valves to control steam, air, noncorrosive gas, or noncorrosive liquid pressure. Replacement devices are available for many models.

UEC

UEC

Differential pressure switches open or close a switch contact in response to a change in sensed differential pressure.