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Problem with pump.

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Problem with pump.

I would appreciate some help with this problem I have with my pump set up.

I have a metal Mityvac pump with pressure gauge on it and some clear tubing that pushes onto the end of the Mityvac but it slips off.
I have cut the end of the tubing off in case it had stretched but that made no difference, then I bought a small jubilee clip but when I tighten it the tubing slips off the Mityvac because the nipple (or whatever it is called) is bevelled.
Adding silicone sealant was no help at all.

It just will not stay in position. Any ideas?

Here is a couple of pictures to help my poor description.

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OK—here goes: The griping part of the pump design should have a barbed surface. We can’t do anything about that since it is an aluminum alloy and can’t take heat. Since it is conical—pressure (Clip) when applied pushes it off. Let try the old 3-M 5200. Buy only a small tube apply it only to the pump end and slide the newly cut end of the hose onto it; then turn a bit, apply your clip slightly and let dry for 24 hours. Let us know. I’ll keep thinking. Don’t understand the 2nd photo. I’m assuming this is the connector to the tube. Why would you need to show it unless there’s a problem there. Steve

Wrap the pump side with some medical tape, like the kind found in first aid kits. That might provide enough traction to keep the hose on. Or maybe try a thin layer of glue, then slide the hose on.


Started: 7-01-05 BPEL 6.50 in NBP 6.00 EG 4.75 in Now: BPEL 7.5 in NBP 7.0 EG 5 inch (midshaft) Goal: Girth!!

Unfortunately it looks like your pump requires a smaller size hose then the male connector. Also what Tennsteven mentioned, the pump tube should be barbed. Bad design.

The silicone adhesives might not stick well to that polyurethane tubing. I would try using something like rubber cement or contact cement to glue the poly tubing to the pump. Make sure to clean off all your past gluing attempts and I would try without the hose clamp as that might not be a perfect circle.

Be patient and allow the rubber cement to dry completely before pumping.

Originally Posted by Tennsteven
OK—here goes: The griping part of the pump design should have a barbed surface. We can’t do anything about that since it is an aluminum alloy and can’t take heat. Since it is conical—pressure (Clip) when applied pushes it off. Let try the old 3-M 5200. Buy only a small tube apply it only to the pump end and slide the newly cut end of the hose onto it; then turn a bit, apply your clip slightly and let dry for 24 hours. Let us know. I’ll keep thinking. Don’t understand the 2nd photo. I’m assuming this is the connector to the tube. Why would you need to show it unless there’s a problem there. Steve

Yes the mityvac is smooth where the tubing attaches, as you say when I tighten the jubilee clip it slides off the conical end.

What is 3-M 5200?

I don’t know why I posted the second photo either :) yes it is the connector to the tube.

Nonstock, do you mean self adhesive tape? I have some of that.

gprent, I ordered my cylinder from the UK, they provide the Mityvac pump which I think comes from the US.
I told the UK company that the tubing slips right off and they suggested I use the clip.
LOl, great help they are.

I went to a huge hardware store and took my pump with me but could not find a better fit silicone tubing.

I have some superglue, will that be OK to use on my pump?

I don’t think the superglue will work and I don’t think the 3-M 5200 will work either because that is silicone based. Like I said before, try rubber cement or contact cement. That stuff sticks to anything.

It might be worth using a sort of brace made with medical tape (or any strong tape come to that).

Slip one end of the tape between the hose and the clip; run the tape round the pipe that leads to the gauge and back down to the other side fixing that end between the clip and the tube, so that there is a loop of tape round the pump and fixed between the clip and the outer covering of the hose

You can then fix the tape with the screw, keeping it taut and so holding the tube tight against the body of the pump

I hope that is reasonably clear, if not tell me and I’ll try a longer explanation.

Might be worth a try

Tit

PS. Take care when tightening the clip though . Too tight and you could crush the pump flange. Although if it is aluminium is should take reasonable pressure. if plastic - very light pressure.

Originally Posted by petitfaun
It might be worth using a sort of brace made with medical tape (or any strong tape come to that).

Slip one end of the tape between the hose and the clip; run the tape round the pipe that leads to the gauge and back down to the other side fixing that end between the clip and the tube, so that there is a loop of tape round the pump and fixed between the clip and the outer covering of the hose

You can then fix the tape with the screw, keeping it taut and so holding the tube tight against the body of the pump

I hope that is reasonably clear, if not tell me and I’ll try a longer explanation.

Might be worth a try

Tit

Is your real name Rube Goldberg? :)

Originally Posted by gprent

Is your real name Rube Goldberg? :)

I think I’m a cross between Rube and Heath Robinson :-k

Alternativly you could suggest to the supplier they take it back and refund your money as it does not work properly I think the “sale of goods act” should cover your case and if they get difficult mention the ‘Small claims court’, although. Of course this would be a threat only as you probably wouldn’t want to go public on a penis pump.

On the the other hand, they would not want the public to know they sold penis pumps.

There are better UK made pumps that work properly.

Tit

Hey Bluenun:

BTW—That’s great wine. Anyway, 5200 is a adhesive that we use on boats. The stuff is watertight when dry or cured properly and will almost stick to anything. I’ve used it on slick fiberglass and it holds. Also, I was thinking—if you used some rough sandpaper (80 grit) and roughen up the tailpiece of the pump then applied some Locktight Red to build up the surface, let it dry and then put your plastic hose over it—theory says it would stay. Also when you trim the clear hose before putting it on the pump. Stick it into boiling water and then onto the pump. A lot of the plastics are made to be installed that way. On boats the drains MUST be done that way. Also, by putting the clear hose into the boiling water for just a few seconds, you’d be able to push it further onto the tailpiece of the pump. The roughen tailpiece with the Locktight would put sorta a barb on the tailpiece to help it from back off. I’m no Rube Goldberg but close. Steve

Tenn, just one thing. I think the hose is already too large for the pump so putting it in boiling water will only make it worse.

Can you buy that 5200 adhesive in something smaller then a caulk gun tube?

This is really a simple problem and it is getting way too complicated. :)

Originally Posted by gprent

This is really a simple problem and it is getting way too complicated. :)

Ha Ha I agree. Like gprent said, try a little rubber or contact cement. While still sticky, wrap enough self adhesive tape around it to build it up enough to fit the tube good. Then lightly tighten wait a few hours then start pumping.
Wrap the tape Tight!


Started: 7-01-05 BPEL 6.50 in NBP 6.00 EG 4.75 in Now: BPEL 7.5 in NBP 7.0 EG 5 inch (midshaft) Goal: Girth!!

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