Air Restriction Gauges

Donaldson 136501-00525 Air Filter Minder /Restriction Gauge

Air Filter Restriction Gauge  Filter Minder® Threaded This unit continuously monitors air filter restriction. The clear window fills with yellow as filter restriction increases. The indicator locks at several increments. The filter should be...

Donaldson 175578-10225 Filter Minder Switch

Filter Minder® Single Position Indicator and Switch This unit is a combination single position indicator and switch. When the maximum recommended air filter restriction has been reached, the window turns red and a signal is sent to the filter...

Donaldson X002103 Air Cleaner Restriction Informer Kit (includes X002278)

The Informer™ This unit continuously monitors air filter restriction. A clear window turns red when maximum restriction has been reached. The reset button is on top. Kit includes full installation instructions and a P100089 safety filter fitting...

Donaldson X002251 Restriction Indicator, Servi-Signal, Mini

Servi-Signal™ Mini Indicator Small enough to fit just about anywhere (only 1.66" high), the Donaldson ServiSignal shows a highly visible, bright red flag in the full-view window when restriction limit is reached. Resets manually via top button...

Donaldson X002275 Restriction Gauge, Informer- 1/8"-27

The Informer™ This unit continuously monitors air filter restriction. A clear window turns red when maximum restriction has been reached. The reset button is on top. Restriction Limit 30" H2O/7.5 kPa

Donaldson X002277 Air Cleaner Restriction Informer- 1/8-27 Thread

Air Cleaner Restriction Informer- 1/8-27 Thread- Donaldson X002277 Features Provide precise readings that show how much life is left in an air filter Measures restriction in inches of water vacuum Resistant to vibration, breakage, weather,...

Donaldson X002278 Air Cleaner Restriction Informer- 1/8-27 Thread

Air Cleaner Restriction Informer- 1/8-27 Thread- Donaldson X002278 The Informer™ This unit continuously monitors air filter restriction. A clear window turns red when maximum restriction has been reached. The reset button is on top. Thread...

Donaldson X004816 SafetySignal Wing Nut Indicator for Safety Filter- 1/2"-13

 The SafetySignal service indicator replaces the wing nut on the metal end cap safety filters and constantly monitors air restriction. When service is required, it locks red and can be reset after service. The SafetySignal requires no special...