Its cast iron body and rugged construction make it an industry standard for boilers

the unit pulls 11

Bronze Body Construction: Provides superior corrosion resistance and durability in harsh mechanical room environments

maintaining exact physical dimensions and airflow clearance requirements

Can I use the K71-109 in residential air conditioning

Dwyer Instruments A3010 Pressure Switch/Gage mario Its cast iron body andThe Dwyer Instruments A3010 Photohelic Pressure Switch Gage is a versatile 3 in 1 instrument that combines the precision of a Magnehelic differential pressure gage with the control capabilities of double pole double throw (DPDT) relays. Designed for air and compatible non combustible gases, this model features a 0 10. 0" W. C. range and a standard 4" dial face for clear, continuous pressure monitoring. Engineering grade phototransistor actuated relays