Parts & Accessories

Order McDonnell & Miller Parts, Accessories, and Equipment direct from the authorized Wholesale Distributor and HVAC Supply House - Winstel Controls

Boiler Controls

Low Water Cut-Offs
   • Hot Water Boilers
   • Steam Boilers

Water Feeders
   • Electronic
   • Mechanical
   • Make-Up

Liquid Level Controls

Conductance Actuated
   • Valves
   • Sensors
   • Controls

Float Actuated
   • Pneumatic
   • Valve

Flow Switches

Liquid Flow Switches
   • General Purpose
   • High Sensitivity
   • Industrial

Air Flow Switches

McDonnell Miller Parts Same-Day Shipping Winstel Controls

McDonnell & Miller at Winstel Controls

McDonnell & Miller products are used for demanding applications where high accuracy is required. Winstel Controls supplies the full line of McDonnell & Miller products and components that specialize in Boiler Controls and power switches. These would include airflow switches, level controls, various valves, relief valves and water cut-off systems for boilers and water pumps.

For almost any application Winstel Controls can deliver the McDonnell & Miller product or part you need. We also carry other products like boilers, heat pumps, air conditioners, gas meters, gas regulators, pressure gauges, pressure regulators, control valves, globe valves, open-close ball valves, butterfly valves, valves with rotary actuators, pressure independent ball valves and more. Check us out at Winstel Controls.

At Winstel Controls, our job is to always find the product that is best suited for your application. Please consult the McDonnell & Miller experts at Winstel Controls.