--On this page, the third photo down shows the problem. The casting is made of bronze so I'm thinking silver solder, or would it be better to braze it? What I don't want to do is get it so hot that I damage the geometry of the machined surfaces inside the valve.
My personal preference for this repair would be a Sil-Phos alloy available at
TIG braze weld using sil-phos-bronze. V out the crack with a die grinder and fill it in.
I will defer to Ernie on the repair method, of course. The cap/hinge piece looks like it holds packing material and doesn't have any precision machined surfaces. As long as it is disassembled completely there shouldn't be a problm.
Cheers,
Kelley
Annoying cracks can show up at the worst places:
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