WA# NWINDMI062BE  OR CCB#  96672  ID#  RCE-17032  CA#  726315  NV#  0062228  DUNS#  82-513-4612

309 Series Boiler 

309 Series Boiler

​​​​Main Office:  (360) 256-0923

Fax:  (360) 256-9104
2911 NE 109th ave.  Vancouver, WA 98682

24/7 Emergency Service

The Johnston 3-pass boiler has large steam and water storage areas, high efficiencies, and the ability to meet wide load demands.


The three pass design can be manufactured up to a 750 HP steam boiler. The 3-pass maximizes heat transfer while minimizing the use of refractory – no expensive door repairs.

The 309 Series package consists of the pressure vessel, base assembly, and boiler trim. Burner and controls are provided by others. The 309 Series is specifically designed to match your burner with our boiler. Our sales team will provide you with a detailed proposal based on your specific design requirements.