BRF or not BRF?

[hwfstru]

How do you identify a BRF valve body from a non BRF valve body? Sorry to sound so stuid but I really don't know.

Thanks

 

[petesgn]

Usually there will be a lettering near the selector valve on the valve body
Saying BR followed by a number (not sure on the number).
\

 

[chris718]

the also have 2 similar looking pressure switches 1 on the filter side and 1 on the rear ,w/a cup plug in the 2/1 exhaust port ,also they have a large steel ,not aluminum tv plunger br and bq are the letters located next to the manual valve and usuaally have a pink stripe of paint still visible in the same location www.ckperformance.com