Curiousity got me today, so stopped by for a closer look. The valves I questioned at Menards are NIBCO brand, and were indeed bronze, as by the manufactures label. The description confusion was do to Menards themselves. Correct labels were on product itself, but mislabed on the item description shelf bins themselves. Menards used 'brass' descriptions loosely. The Nibco website shows both bronze and brass ball valves. Appears to be quality product company. Then compared to the Groco brand valves. Both use chrome plated brass balls and PTFE seals
. I'm not suggesting the valves at Menards are acceptable for marine use by any means, just provoking some thought. http://www.nibco.com/assets/TS58570BV.pdf
I just don't believe marine parts
are only availble at marine stores at an inflated prices.
Along the same thought process as Blue Seas using Carling circut breakers, and that the Blue Seas buss bars are available from industrial suppliers such as McMaster-Carr w/o the Blue Seas label, down to the same photo
Haven't been able to verify if Groco manufactures or simply relables thier valves. Possibly someone here knows ??? I did find this bulletin worthy of noting. SERVICE-BULLETIN