I have a limited supply of used brake valve parts (things like metal bodies, nuts, metal washers, pistons, electrical terminals, etc.) that are available for sale. These come from the valves and switches I've bought for disassembly purposes. I can't list all of the individual pieces, but if you're looking for something I might be able to help. Just use the contact form on this web site to describe what you're looking for and I'll see if I have what you need. Pricing is variable, but the minimum for even the smallest part will be at least $10.