Schedule 80 CPVC nipples up to about 4" long are $2 at Grainger. That probably beats brass and there are no corrosion problems. CPVC is code-acceptable for hot and cold water in residential applications.
316 Stainless is also pretty close to brass in the galvanic series and is suitable for that application. It may now be less expensive that brass.
Damn Dude! What is with you and CPVC lately? You're starting to act like an informant that just broke loose from the plastic industry with this stuff, you're scaring me.
What's the worse thing about your recommendation? Constant variance of temperature that makes that product vulnerable at its weakest point; the threads. RoomTemp/COLD/HOT < repeat a half million times Hardens that product to the consistency of fragile glass when it is aged, brittle.
In other words, someone could barely touch that years from now *tub spout* and those threads will most likely snap right off. Somebody actually pushes down on that tub spout by mere accident.....it's going to break easily.
You would not believe how many people put their foot on the tub spout to wash their lower extremeties.
Here's what I love about brass:
Buy fittings or pieces of pipe, throw it in your back yard, bury it and let it sit out there for 60 years and then dig it up, take a wire wheel to it and it works without error, without failure.
Sorry BobNH but unless your a part time plumber, you'd see how often plastic components CONSISTENTLY break in plumbing everyday. Not the job security I feel is fair to the consumer, that's why I advocate products in my profession that are historically known for their longevity, whether I'm here for one more hour or 40 more years.
