OT What is the thread on a toilet flush valve ?

Reverse for sure

Home Depot! They've got it all! They even have dozens of burley dudes that can answer questions just like the one you have. IF YOU CAN FREAKING FIND THEM!!! You hear that HOME DEPOT? I'm still waiting for help in the plumbing isle!!!!

Bwaaa hahahhaaha

Do you honestly think that they would have an answer? I have asked many like "Where are the phillips screwdrivers?" and was told by the tools guy that there was no such thing, just flat, star and, hex.Guess I was told, anyhow I have no faith in Home Depot people. Good place for cheap stuff, thats it (if you can find it.)

Ben

i always thought those screwdrivers where known as positive and negative. :)

Ohhhhhhh..... so that is why I got electrocuted sticking a screwdriver into a electrical outlet, I must have put the negative screwdriver into the positive side of the outlet....It all makes sense now. Thanks for the help.

Ben

Positive, negative........goes right along with this "Believe it or not."

when it comes to defending vodoo, applying positive energy to mainboard is a good place to start. hehe :)

Where do you guys find this sh_t?!?!? That was hilarious. Read the one about the overclocker causing a rift in the space-time continuum (link from the bottom of that page). That's another good one.

I agree - what a bunch of crap! I hope Mike sees this one - seems to fit right in with southern CA.

WT

hey, it just so happens that i sell flush valves, and use solidworks also. i'm no genius but would be glad to pull out a thread gauge and check for you. delany? sloan? watrous? zurn? which threads, top? bottom? handle connection? hydraulic flush tube connection what? tom snipped-for-privacy@securityplumbing.com

A guy with a real answer and no ones interested....go figure

Actually I contacted him directly. We were not able to come to an answer as he was under the impression I was working on a commercial product. But I am working on a residential product. So I was still interested, you just did not see what was happening in the background.

That being said, I am sill looking for some answers. So far I have established it is a standard 2" straight pipe thread at 11.5 tpi with a 60 degree cut for the thread. I have seen a few at a hardware store and found that the threads do not have a truncation, or have sharp edges, so the model should be correct but I just do not trust the model I have, because in the Machinery Handbook to says that standard pipe thread for nominal pipe size of 2" external thread has a Major diameter of 2.339" (I have this) and a minor diameter of 2.882" (this I do not have given the other information above. I have 2.189" Id of the thread given the sharp edges of the thread). Any suggestions?

Ben

So far, so good.

?? Pitch diameter is ~ 2.288. ??

Call manufacturer? 8~)

Were you looking at the Hose Coupling Thread (NPSH) and Straight Pipe Threads for Mechanical Joints (NPSM, NPSL) sections in the MHB?

Could you try having the part printed in 3-D and trying it in an actual assembly?

Deb

Ben,

Commercial tolerances, on this type of thread, are hardly ever adhered to. Especially with all the Chinese junk out there. Mostly they run way under on OD's, and over on ID's. Straight threads are usually used for jam nuts, and some types of drain fittings. They'll still work even if they're a bit sloppy. Tapered threads are more critical.

Just model it to the nominal in the machinery handbook. That's the reference they'll use when they machine it. It should fit anything.

Regards

Mark