Use the 3500 Series for Floatless, Non-electric Control of Pumps, Alarms and Processes

Versatile, Reliable and Competitively Priced, Benefits Include:

Crisp On-Off
No Pump Slow Down at End of Cycle

Standard 3-Way Design
Dumps Air Line Pressure Between Control & Pump on Shutdown to Help
Prevent Pump Stalling

One Model Does It All
Field Changeable from 5" to 10" Differential

Series 3500 Models

CD (Close Differential) provides 5" WC On-Off Differential
WD (Wide Differential) provides 5" WC On-Off Differential