Kodiak Controls EA14B Gauge the internal bimetal disc is

the internal bimetal disc is defective

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

Does the 1-2 PSI spring require a specific mounting position

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

Is this compatible with newer electronic ignition models

Kodiak Controls EA14B Gauge the internal bimetal disc 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