At 02:58 PM 9/12/2015, Don Hanson wrote:
>    Is there an accepted method to test the function of one of our double
>style thermostats?   I am skeptical about the proper operation of my
>currently installed one.... lately....I have had some other issues with

Put it in a pan of vegetable oil or 100% gycol antifreeze (caution:
both are flammable) and heat it on a stove.  Opening begins
~85C/185F.  Opening complete ~105C/221F.  Minimum opening stroke 8 mm/.35 in.

Yrs,
d