Kodiak Controls EA14B Gauge The Johnson Controls T-4000-3139 is

The Johnson Controls T-4000-3139 is a professional-grade horizontal pneumatic thermostat cover designed specifically for the T-4000 Series room thermostats

Technicians should use a manometer to measure the actual vacuum at the switch port

the 025-28954-000 features a factory-terminated plug connector that simplifies field installation and eliminates the high impedance issues associated with manual crimping or terminal corrosion in high-vibration environments

the internal bimetal disc is defective

" ensuring the filter media stays intact even under high-vibration conditions

Kodiak Controls EA14B Gauge The Johnson Controls T-4000-3139 isThe Kodiak Controls EA14B Gauge is a professional grade 4 1 2 inch dial pressure gauge engineered for accuracy and durability in demanding commercial HVAC and plumbing environments. This contractor pressure gauge features a 0 60 PSI scale with a high visibility white dial and bold black numerals, ensuring legible readings even in low light mechanical rooms. Built with a corrosion resistant stainless steel case and a 1 4 inch NPT lower mount, the EA14B