valves and controls, controls and valves, ball valves, gate valves, globe valves, blow down valves, McDonnell-Miller, low water cut offs, theromostatic, controls, Danfoss, Macon, Taco, Honeywell, Honeywell-Braukmann, Honeywell-Braukman at State Supply Co.

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Valves & Controls

State Supply is a leading national distributor of McDonnell-Miller boiler controls, flow switches and repair parts. Over 95% of the product is on-the-shelf ready for same-day shipping anywhere in the world.

Our huge inventory McDonnell-Miller repair parts and controls supports the needs of building maintenance professionals, mechanical contractors and other wholesalers around the nation.
Huge supply of other valves and controls including: Air vents, backflow preventers, PRV's, radiator valves, relief valves & more!
Other major brand names include: Watts Regulator, Spence, Honeywell, Danfoss, Spirax-Sarco, Powers and more!
Get your FREE McDonnell-Miller and Pneumatic Controls catalog! See the bottom of this page for ordering information.

Air Vents & Vacuum Breakers for the Heating System . . .

Backflow Preventers & Repair Kits . . .

Ball Valves . . .

Blow-Down Ball Valves for Y-Strainers . . .

Blow-Down Valves for Boilers . . .

Butterfly Valves . . .

Check Valves . . .

Gate Valves . . .

Globe & Needle Valves . . .

Honeywell Controls . . .

Liquid Drain Traps for Compressed Air & Repair Parts . . .

McDonnell-Miller Boiler Controls & Replacement Components . . .

Motorized Zone Valves & Globe Valves . . .

McDonnell-Miller Flow Switches and Replacement Components . . .

Pressure Reducing Valves for Water & Repair Parts . . .

Non-Electric Thermostatic Radiator Valves . . .

Radiator Valves and Accessories . . .

Pressure Regulating Valves for Steam . . .

Solenoid Valves & Repair Parts . . .

Relief Valves for Steam, Hot Water & Air . . .

Temperature Regulators for Heating & Cooling . . .

Stop, Sillcock and Boiler Drain Valves . . .

Visit Valves & Controls for a complete product review of all products that will fix what's wrong in the old boiler room

Get your FREE 64-page guide to McDonnell-Miller Boiler Controls & Repair Parts

This 64-page catalog contains the repair and maintenance information you need to get your boiler controls back to proper operation. Troubleshooting and maintenance information makes your job a whole lot easier. Schematic repair part drawings and extensive ordering tables allow you to pick the correct replacement component for the job.

Our huge inventory of Bell & Gossett maintenance and repair parts are ready for Same-Day Shipping direct from our 100,000 square foot distribution facility in Saint Paul, Minnesota. Call 800.772-2099 Locally: 651-774-5985

Get your FREE 64-page guide to Pneumatic Heating Controls and Repair Parts

Pneumatic controls from Honeywell, Johnson Controls, Powers (Siemens) and more! Replacement components and complete units with descriptive pictures and repair part ordering tables. An important catalog for your building maintenance library.