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Old 07-06-2007, 03:34 AM   #1 (permalink)
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Sheridan valve tool measurements please

Just got my first bit o' brass in the form of a Sheridan/PMI Piranha SB. I'm stripping 'er down for cleaning and brass polishing and wanted to remove the valve for Oring swapping and general looksee.

But first I need to make a valve tool which would be easy if some kind soul would be able to use a micrometer or vernier to measure their valve tool and let me know what size the square is and what the hole diameter in the middle is.
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Old 07-06-2007, 12:12 PM   #2 (permalink)
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I was going to type out all the measurements for you, but then I realized I'd done this one before so I dug it up. -->> Here you go. You'll probably want to drill and tap the other end of your valve tool rod to fit the threads on the valve guide so you can pull it out. Especially since you can't use the empty 12 gram trick on a Piranha. I don't know the threads off hand, but if no one has gotten you a response on that before I get to my shop next I'll try and remember to bring a thread pitch gauge home (or bring a valve tool to the shop).

Hope that helps.
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Old 08-02-2007, 04:26 AM   #3 (permalink)
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Looks like I'm in need of the thread size on the valve body. I've got the square part made up and removed the retaining nut but the body ain't a'budgin' no how, no way.

Interesting item is the lead sealing washer I found behind the retaining nut. It got pretty messed up in removal but I could figure out a way to reform it and reuse it or do you folks just use an Oring instead?
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Old 08-02-2007, 02:40 PM   #4 (permalink)
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throw the lead washer away, you don't need it. you also don't need to put anything in its place.
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Old 08-02-2007, 02:46 PM   #5 (permalink)
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but throw it away in an environmentally friendly way -

it is lead you know
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Old 08-02-2007, 02:51 PM   #6 (permalink)
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Melt it down and dispose at 800fps?
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Old 08-02-2007, 03:20 PM   #7 (permalink)
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Send it along to china - they'll toss it in along with the recalled kids toys they'll be smelting down for lead.
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Old 08-02-2007, 11:29 PM   #8 (permalink)
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Oh SURE! You're all experts on how to dispose of a bit of lead but when it comes to knowing that darn thread size you're all MUTE AS A STICK!

I take it from the reaction to the lead seal that the valve likely hasn't been removed since new.

No fear of the outcome of the lead. I use a fair amount of it as noseweight for balancing the center of gravity on my model airplanes. I'll just add it to my little bin of old fishing weights and lead flashing and such.
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Old 08-14-2007, 01:04 AM   #9 (permalink)
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take a look here for your answer adjust your velocity
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Old 08-14-2007, 01:51 AM   #10 (permalink)
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That's a VM68 valve tool, not a Sheridan pump gun valve tool.
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