This fan is rated for CCW rotation when facing the discharge side (the direction air is being moved)

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

This HVAC manifold gauge features comprehensive scales for R-12

System Integrity: Includes a 4-bolt mounting configuration that provides a superior seal compared to generic aftermarket alternatives

Can I use the K71-109 in residential air conditioning

Dwyer Instruments A3010 Pressure Switch/Gage mario This fan is rated forThe 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