On Tue, 19 Feb 2013 04:29:55 +0000 (UTC), David Lesher
wrote:

"PrecisionmachinisT" writes:


Flow meter.

http://www.flowmeters.com/

Alas, far too pricy; I'm just looking for visual observation,
not precision measurements.

But usually hydronic systems just zone valves and temperature sensing.

Which is why there's an issue here...no way to observe flow.


How about one for a garden hose.

http://www.homedepot.ca/webapp/wcs/stores/servlet/SearchView?catalogId=10051&storeId=10051&langId=-15&N=0&Ntt=garden+hose+flow+meter&Nty=1&D=garden+h ose+flow+meter&Ntx=mode+matchallpartial&Dx=mode+ma tchallpartial&s=true