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