Brochure
Table Of Contents
Tunstall E-Z-Fit™ Conversion Kit 
Instructions “T” Style (thread in) 
Tunstall Corporation 
118 Exchange Street • Chicopee, MA 01013 
© July 2014 
We reserve the right to alter designs, specifications and information without notice. 
Phone (413) 594-8695 · Fax (413) 598-8109 
www.tunstall-inc.com • www.maconcontrols.com 
Bulletin-INST-EZFIT-0714 
Conversion Inserts 
1.  Remove existing valve components. Thoroughly 
clean and inspect interior of valve. 
2.  Drop in the supplied removable seat. The seat 
should have a gasket on the bottom side and a 
spring affixed to the top. 
3.  Thread in Tunstall insert assembly and secure. 
4.  Affix the operator to the top of the insert assembly. 
Pictured to the left is a typical installation. Retrofit kit 
may or may not include spring and removable seat. 
Skip the steps that do not apply and proceed with 
your installation. 
That’s it! 
Now your radiator is under “Macon Control.” 
If you have any questions do not hesitate to call your 
representative or the factory. 










