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Old 11-21-2013, 02:30 PM   #1 (permalink)
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DRV vents 12Gram 1st shot

I just got DRV 102 in a trade. Its venting the 12 gram in the first shot. I disassembled the valve, cleaned and lubed it and no change. It came with a glued urethane valve seat and a rubber valve seat. Both have the same result.

I read in a different post that if the valve stem has a rough spot this could cause this. It is rougher where the spring is. Can the valve stems be polished or will that create fit and binding issues? Can they be purchased and if so how much?

How much can the hammer be reshaped / polished before its mass gets to light?

Thanks for any help.
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Old 11-21-2013, 06:11 PM   #2 (permalink)
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Did you cock it before airing it up?

Are the seats flat on the valve caps? Seats are made out of either translucent urethane or white delrin. If you have one with a buna oring in it it isnt mine and it wont work.

Urethane seats are a 012 oring and are held in place with loctite brand " crazy glue". The gel in the black and blue dispenser.

You can clean up any rough spots on the power tube. Stay away from the sealing face.

Also check the 010 buna oring on the power tube tip in front of the washer. It might be damaged.
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Old 11-22-2013, 01:24 AM   #3 (permalink)
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I did cock it.
It holds gas till the hammer falls and then the valve stays open.

Seat was Translucent Urethane. I damaged it and have been tying to get it to work with a green O-ring. I have urethane O-Rings coming in both 70 and 90 duro. Which do you recommend?

I also replaced the 010 on the power tube with a new urethane 010.

Are the delrin seats O-rings or flat washers? Do they work better? I've got black and brown ATF Delrin I can turn on my lathe.
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Old 11-22-2013, 07:45 AM   #4 (permalink)
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Quote:
Originally Posted by newmaticarsenal View Post
I did cock it.
It holds gas till the hammer falls and then the valve stays open.

Seat was Translucent Urethane. I damaged it and have been tying to get it to work with a green O-ring. I have urethane O-Rings coming in both 70 and 90 duro. Which do you recommend?

I also replaced the 010 on the power tube with a new urethane 010.

Are the delrin seats O-rings or flat washers? Do they work better? I've got black and brown ATF Delrin I can turn on my lathe.
the power tube oring should be nitrile. urethane have no give to them and will hold the power tube open.

either 70 or 90 will work for the seat.

the delrin does not work better. that was the first generation. it doesn't tend to seat reliably. the rings were machined.
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Old 11-22-2013, 12:53 PM   #5 (permalink)
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Thank you for the info.
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