Dual Valve Pump Head - How Does It Work? Whats Inside?

Рет қаралды 231,316

4 жыл бұрын

I disassemble a dual valve bike pump head, and explain how it works. Why doesn't it blow air out the open hole. I also give a tip of how to extend the life of a leaking dual valve pump head. Then I reassemble the pump head. The pump in the video is a Park Tool PFP-3.
On this pump head, the lever is pulled up to lock it onto the valve stem. On some other models, the lever is up when put on to the valve stem, and the lever is pushed down to lock it onto the stem.
Replacement Dual Valve Pump Head:
www.amazon.com/exec/obidos/AS...
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Пікірлер: 270

@RJTheBikeGuy 4 жыл бұрын

For more bike repair videos hit the subscribe button 🛑 and click the notification bell ► bit.ly/SubRJTheBikeGuy

@jessepitman4074 4 жыл бұрын

Hey RJ The Bike Guy can you fit 29 inch tires onto a 700c rim?

@RJTheBikeGuy 4 жыл бұрын

@@marcocarrillo4645 kzfaq.info/get/bejne/p8mXrZZevd-ym30.html

@ChuckD59 4 жыл бұрын

Such a mundane thing but even after several decades working on bikes I just learned a couple things about something I've worn out and replaced without much thought. For one, I never flipped the lever for Presta valves unless the rubber fitting was getting worn and I assumed it was just a sign I needed to replace the head (and I'd always swear that I had replace the entire valve for just a small part). But I come from a Silca world where there was no lever to flip. Second, I never really considered how they work! They just did and I moved on to bigger things. I do think when I swap my gaskets next (soon), I'll be smearing a very thin coat of silicon grease on any rubber parts just to be sure everything moves smoothly. Thanks RJ!

@jfarinacci0329 2 күн бұрын

This is ingenious. Simplicity is beauty. Good work. Thank you for sharing.

@cfytcf 3 жыл бұрын

Easy to understand when you can see the insides - thanks for making this.

@Robinators 4 жыл бұрын

After watching this, overhauled my floorpump, cleaned, relubed o-rings with silicon spray, swapped those rubber things, works like new, Big thanks!

@Ellexis 4 жыл бұрын

🤔Gotta hand it to the engineers who designs stuff like this! Thank you for the clear and concise explanation!👍

@vlodek-193 4 жыл бұрын

I always wondered how this ending works in my pump. Many thanks for the explanation :) Greetings from Poland! I wish everyone a lot of health!!!

@sidewalks2269 3 жыл бұрын

I thanks you brotha

@nowthenad3286 5 ай бұрын

A perfect tutorial. One of the best videos on KZfaq.

@trondaardal 2 жыл бұрын

Thanks alot dude! My pump head was only feeding the schrader and not the presta. After disassembly i found the rubber ball was gunked up with tubeless sealant and was effektively glued in place! After cleaning and reassembly works like a charm! Who knew valve heads could be serviced? :D

@drmoynihan 4 жыл бұрын

What a brilliant design. Thank you RJ for showing us this.

@jeremyanbart 4 жыл бұрын

I have an identical dual head setup on a much cheaper pump! Great video. I never would have tried to mess with it as it looked a bit fragile. Glad to know its serviceable! Thanks again for great detailed info and video!

@ahmedelsaadany7115 Ай бұрын

That is why I signed yo for youtube, to watch quick very useful videos that saves you a lot of time and few bucks as well

@SimplSam 4 жыл бұрын

I had some fun the other day trying to pump an inner tube, which had been taken off the bike to find a slow-ish leak - and the air kept on coming out of the wrong hole on the pump. Now I know why. I had tried putting my finger over the wrong hole to stop the airflow - but probably reinforced the flow to that hole. I ended up using another pump, but now have wisdom on my side -- for next time! Great Vid.

@duaneguilbeau 2 жыл бұрын

Thanks so much. I just fixed mine. And learned which way to flip the lever. I'm old school, you had to flip the lever down to make the seal.

@49marquito 4 жыл бұрын

Thanks for the clear and detailed tutorial, you helped me get my Craigslist pump working! The step-by-step instructions gave me the confidence to take it apart and I’m really excited to tinker with all kinds of junk that I own whereas before I thought I’d break everything I touched!

@desert.mantis 4 жыл бұрын

Excellent and informative, RJ. Thank you.

@nowthenad3286 3 жыл бұрын

Swap the gaskets! - Brilliant! Thanks

@martinhoude3518 3 жыл бұрын

This morning, I went to the bike shop to get a new dual valve (it's leaking on the Schrader side, which was seldom used...it's still usable on the Schrader side, but not on the Presta side. They did not have it. I went to the local hardware shop, which suggested the bike shop... Then I found this video ! Thanks a lot!

@thisylvain 4 жыл бұрын

Amazing, didn't know it would be so simple to repair this !

@earlgrey1492 4 жыл бұрын

That's actually really smart! Thanks for the video.

@Bikeops2021 4 жыл бұрын

Awesome, I've never thought about how they work thb, great video, Cheers.

@devonrd Жыл бұрын

This helped me make my pump work again. The problem: I had air coming out of the wrong side. Because I now understand how the pump prevents air coming out from both sides, I thought: "what if I place the pumphead sideways?" This fixed my problem, because now the ball inside the pumphead was doing its work again. Thank you! 🎉

@nirajshr 4 жыл бұрын

brilliant video. love this. I always wondered how these things worked. More of these kind of videos.

@LawrenceSeetoh 4 жыл бұрын

Yes, I have been curious. thank you for sharing

@suek5111 2 жыл бұрын

Very good, clear description.

@neilrhodes3879 2 жыл бұрын

Thanks , saved me buying a new head! :)

@lanitagrice7644 3 жыл бұрын

Fantastic explanation. I'm in the middle of doing some maintenance on my Planet Bike ST pump and came across this video in my subscriptions. Fun info.

@AnthonyKrznarich Жыл бұрын

My lever broke off a Blackburn Airtower 6 and is stuck to my Schroeder valve. and this explained a lot. Thank you!

@kathylewis7543 4 жыл бұрын

Thank you for the broadcast so great!

@BenjaminCrossunknownalbumtitle Жыл бұрын

Thank You Very Much Excellent Instructions put Awesomely CLEAR to COMPREHEND. GREAT Timely Fashion ALSO !!!! 10 Stars!!! ☺

@k9kayaks 11 ай бұрын

Thanks for this detailed video. Just this morning my floor pump was leaking air and never realized you could take valve apart and switch the gaskets around. I’ll definitely try this on the morning before buying a new pump 👍🚵🏻‍♂️

@MickE4033 3 жыл бұрын

Many thanks for such a clearly presented and useful video.

@bencolman9908 2 жыл бұрын

Just used this video to fix my park tool pump. After years of only using the larger side the ball had become seized. A quick disassembles n clean and it’s good as new. Thanks

@lesliecsenderits1273 2 жыл бұрын

Well done and thank you for the video

@Mrjonblakely 4 жыл бұрын

Thanks man, mine was leaking and now I know what to expect. Love your channel!

@montanajones8393 4 жыл бұрын

Great & informative video. Something that you use all the time but had no idea how it worked, now I do. For those that plan on working on theirs, if you want to extend the life of the rubber seals 303 Protectant works great & when re-assembling the parts, spraying some rubbing alcohol will make things much easier.

@pop_ulation Жыл бұрын

did this to an old pedro's, worked like a charm. thank you!

@beardog1963 2 жыл бұрын

Great video! I was able to repair my existing floor pump! Saved it from the landfill!

@billinhouston3291 4 жыл бұрын

Great stuff, RJ.

@geraldbull9272 9 ай бұрын

Really well described, no hyped talk, bet he’s a nice chap.

@dMushh Жыл бұрын

Thanks for the video, i fixed my pump !

@dossip2882 2 жыл бұрын

Great explanation, human ingenuity always amazes me!

@vaibhavchawla7353 3 жыл бұрын

Thank you for solving this mystery. 😁😁

@dr80008 3 жыл бұрын

I'm so glad I found your video! The hose on my unit got broken close to the head and your disassembly helped me to understand that I can just reconnect the head again. The hose is just a little shorter, but it beats buying new pump. There is one more fault that I wasn't able to fix though and that's the lever dropping down, breaking the clamping force on the valve. It looks like the piece is just worn down too much. What I do is I wedge a piece of wood in the head which fixes the lever in place. Thanks and have a like!

@RJTheBikeGuy 3 жыл бұрын

You can always buy a new pump head.

@classydays43 Жыл бұрын

I've had a pump with this style head for nearly 20 years and it never fails me.

@I-Love-Taylor-Swift 3 жыл бұрын

Great vid. Thanks for the info.

@Teaman444 Жыл бұрын

Great vid. You are a great teacher. Going to glue the ball to presta side so I have a schrader only pump. Thanks

@janweekes5432 5 ай бұрын

Wow, thanks for the video, I was gonna buy a new tyre with the other valve and all it took as a couple of minutes of dismantling and the other valve works now. Thanks!

@oliver_siegel 2 жыл бұрын

Thank you for this!

@daijoubu4529 Жыл бұрын

Fixed mine, thanks!

@colinkinton1244 4 жыл бұрын

Thanks for the video. I have the Blackburn version of the dual pump head and a dirtdauber built a nest in the shrader side. After I cleaned out the dirt, the shrader won't hold pressure (presta side still works). Now, I will take it apart to repair (or replace the head).

@Pillionaire99 Жыл бұрын

Only needed the last two minutes 👍🏾

@scootersdenver 4 жыл бұрын

Unusual topic but quite interesting and helpful.

@sergiorivaslamas 3 жыл бұрын

Thanks you very much. Greetings from Bolivia

@rajucyclemechanic 3 жыл бұрын

🙋🧑‍🔧 best information sar ji

@altugarca5716 8 ай бұрын

Extremely useful , bought some on amazon and believe they are leaking but will now have a better picture

@ellerybice3787 3 жыл бұрын

Very useful information, thank you.

@glennet9613 Жыл бұрын

Thanks. I couldn’t see anything wrong with mine but when I put it back together it works.

@kbsreeharinampoothiri6967 4 жыл бұрын

That was really helpful! Thankyou : )

@cookiecrunch747 3 жыл бұрын

Great video really like attention to detail. Well done mate.

@leelemarc2839 4 жыл бұрын

Great video.Very useful for guys like me who love occasional DIY projects here and there. When you think something mustn't work as easy as it seems, take it apart!

@RJTheBikeGuy 4 жыл бұрын

Very true!

@unbalancedcrank 4 жыл бұрын

This was absolutely brilliant! I now know why one of mine is sticky in changing sides. I will service it.

@michaelfowell223 4 жыл бұрын

I always thought they worked via the use of black magic!😂 Thanks for the explanation RJ, you learn something new everyday.👍😊

@troublemarked 2 жыл бұрын

Thank you so much! You saved me a few bucks

@Wuei108 11 ай бұрын

Thank you so much. I always wondered how the air goes to right side of the item.

@quarryfield 4 жыл бұрын

Great video, thanks !

@spency787 2 жыл бұрын

Just saved myself £8.00. My pump was only working on the schrader valve side when all I need is the presta. Disassembled and super glued the ball to the schrader side, swapped the rubber tubes over as in the video and now have a perfectly working presta once again. Thanks 👍

@housecarl1114 5 ай бұрын

Excellent idea, thanks. I only need the presta side, so I will give you suggestion a go.

@joekahno 4 жыл бұрын

Thanks! I have a cheap pump from KYK tools that sometimes takes a pretty sharp first stroke to seat the ball. I wasn't going to replace the head because the whole thing only cost me around $7. If it gets to be too much of an issue I'll clean it up and swap the stem seals while I have it open.

@johnwindsor8337 2 жыл бұрын

Brilliant!

@8cove8 2 жыл бұрын

Thanks, helped a lot

@OuttaHere7 3 жыл бұрын

Excellent video!!!!!!!! THe check valve ball on mine was stuck... I sprayed some armor-all type product down the holes and that help loosen the ball. I helped it along by using an air compressor line to give it a quick (small) blast in each hole and bingo! Thanks again!

@ber2996 3 жыл бұрын

the ball was the key on why when the other nozzle is in use the pump air doesn't just come out on the other nozzle, because when there's a greater pressure from outside (air from tire) the ball is pushed to the other nozzle hole effectively sealing the the other nozzle air hole. As for why the air doesn't simply go back to the pump it's because there is another "one way" ball mechanism at the base of the pump. Amazing how they can think of such mechanism.

@SosiskaTheHorrible 2 жыл бұрын

That’s a better explanation than RJ, I wasn’t getting it at first, cheers 👍🏼

@GenePavlovsky 5 ай бұрын

I think this is the correct explanation. And when you try to pump up a completely flat tire, there's no back-pressure from the tire pushing the ball, so there's a high chance the air will just come on the wrong side...

@damienecho5144 7 ай бұрын

Thanks to your video I was able to take my pump apart and clean the gunk off the ball valve so now it's working again and I dont have to buy a new one. Thanks for a great video :)

@Groot_G 3 ай бұрын

Thank you. I just fixed mine.

@robt6695 4 жыл бұрын

Nice one RJ. Picked up another floor pump a while ago, but didn't seem to work as good as my K-Mart floor pump. Gonna open the head up and check it out. Thanks mate.

@W4WEnglish 4 жыл бұрын

I was wondering how that thing worked, thanks!

@BastHoen 4 жыл бұрын

Nice video, thanks!

@omsingharjit 3 жыл бұрын

Very great Exp

@chrisstrobel3439 2 жыл бұрын

You just saved me $150.00 from buying a new pump .. which I was already to do! My pump with this type of head was only sending air to the Schrader side, so I whacked the head good on my rubber floor mat thus freeing the little ball .. and now it works on the presta too! Thanks!

@blipco5 4 жыл бұрын

I have never once thought about that pump head. In fact I never even knew what it was called. Now I know. 👍

@aniketsutar100 4 жыл бұрын

very nice and deeply operation on dual hole pump valve nice rj

@VegasCyclingFreak 4 жыл бұрын

Good stuff to know!

@ISODW 3 жыл бұрын

tankyou for review

@Killmashine 4 жыл бұрын

excellent video, thx !

@cudak888 4 жыл бұрын

You're giving me the idea of rebuilding the valve head on my old Blackburn Air Tower 5 (which technically needs a full rebuild). Too bad it's at work!

@bermejo9976 6 ай бұрын

Oh, it was very useful. I was about to reverse-engineer it when I found your video which made it easier.

@Whosgondowhat 5 ай бұрын

Thank you.

@gmanmarx8705 Жыл бұрын

Thanks great info just got a new bike with the different stems rhanks

@LauriAP 4 жыл бұрын

The presta side is also a Dunlop side. I have dunlop and auto-schrader valves. I use floor pump at garage. I have also short travel pump that has turnable head. One head is for presta-dunlop and other is for auto-schrader. Thanks for the hint, i can turn the pump gum sealing around for new contact! 😄

@aryansinghlather 3 жыл бұрын

Excellent

@gilbertlopez6101 4 жыл бұрын

Thanks RJ.....

@jubeirok5597 Жыл бұрын

I have a similar dual valve head pump - broke 2 presta valve tips already, gonna use a shreider adapter from now on.

@gabe2252 4 жыл бұрын

Thank you!

@snakeeyes1283 Жыл бұрын

Got puncture, bought new inner tubes, (stupidly) didn't check if they were presta or schrader valves. Couldn't work out how the hell to get the pump head to switch to presta. Got annoyed. Watched this video, understood how the dual pump head works, managed to pump up tyres. Cheers mate!