27 year old 2" Sprinkler Valves

[MrCrowley]

Just picked up four 2" sprinkler valves for $20NZD (10-15USD), problem is they're 27 years old haha. I think I can get at least one or two working, I really only needed one.

According to the seller:
Diaphragm #1 has stretched at the inner diameter, and its sealing seat is deformed.
Diaphragm #2has a hole in it
Diaphragm #3 is distorted at the outer diameter
Diaphragm #4 appears ok but sealing seat is cracking radially

So I can probably fix at least diaphragm #2 and swap the 'phragm from #4 with another valve casing. The valves are rated for 140PSI, will only take them to 120PSI max (spent their lives in a shed, so minimal exposure to elements).

If anyone (Aussies in particular) wants a valve/spare parts after I've got two working valves (or one if only one will work), i'll sell them very, very cheaply to anyone who wants to pay shipping.

[Gun Freak]

You could try making a new diaphragm for one and just keep the valve body if you can't get one working, otherwise, I think it's funny how you're gonna try to use one of these dinosaurs lol

[Lockednloaded]

I'd just get a rubber washer as big as the ID of the inside of the sprinkler valve, then just reinforce to with a wash a bit smaller than the seat on the front, and a washer a little bit larger on the back. You should use nylon if you can find it. Also fill from the top of the valve

[jackssmirkingrevenge]

For some reason I could help thinking "He'd be better off with twenty 7 year old valves" interesting find hehe

[MrCrowley]

Cleaned the valves up today, they look pretty good and are in nice condition. I got 3 useable 'phragms and 3 useable valve bodies so i'm quite pleased with that. Just hope they all work now.

[jackssmirkingrevenge]

I got 3 useable 'phragms and 3 useable valve bodies

"Useable", what do you have in mind? Oooh oooh, pop-off piloting and make a big feck-off soup tin auto! How big is your compressor

[MrCrowley]

"Useable", what do you have in mind? Oooh oooh, pop-off piloting and make a big feck-off soup tin auto! How big is your compressor

*Cough* "usable"
No one has time for spell check these days anyway

Currently in mind, a tennis ball/soda can cannon. GGDT says f-all improvement using two valves, so just need the one. Other two valves can join my four 1" sprinkler valves and do nothing

[jackssmirkingrevenge]

"Kiwible", surely

Yes, the one should suffice - and one of those 1 inchers would make a good pilot