What is the difference between Watts 0067452 and RA-1-AP-1

the 1/8" NPT barbed fitting is designed to accept either 5/32" or 1/4" OD pneumatic control tubing

it is designed to withstand the high-vibration and moisture-heavy conditions typical of mechanical rooms

Rated for temperatures up to 250°F and 60% glycol solutions

Constructed from high-grade aluminized steel or corrosion-resistant alloy

Schneider Electric (Barber Colman) MA-405-500 Actuator Els PW 17895 What is the difference betweenThe Schneider Electric (Barber Colman) MA 405 500 is a heavy duty two position oil submerged actuator engineered for precise control of dampers, valves, and specialized HVAC linkages. Operating on 120V AC, this power return unit delivers 16 lb in torque, ensuring reliable fail safe operation in demanding commercial environments. As a legacy standard component, the MA 405 500 serves as the direct replacement for MA 405 191, maintaining the same form