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Questions and answers about sports

How would I go about getting this Zefal pump to work with a Schrader valve?

6 min read

Asked by: David Navarro

Do I need a special pump for a Schrader valve?

Schrader valves are most commonly found on bikes with wide rims and are the same style you’ll find on most automobiles. They use an internal spring to allow inflation while keeping the valve closed. You can inflate this style easily with any regular air pump.

How do you put a pump on a Schrader valve?

Quote from video: The hose or pump connection may screw on or press on some push-fit connections lock with a cam lever. A push-fit connection to a Schrader valve.

Why can’t I pump my Schrader valve?

Sounds like the valve has stuck shut, this can happen if the rubber seal at the base of the valve swells up. If the valve core is replaceable just get the appropriate valve tool and a replacement core, both are really cheap. Otherwise its likely to require a replacement tube.
Nov 1, 2016

How do you switch between Schrader and Presta?

Quote from video: To change the internal parts to accept a Presta valve unscrew the pump head cap. Open the thumb lock lever to help push out the internal. Parts reverse the direction of both internal.

What does a Schrader valve pump look like?

Quote from video: So everybody knows about this one this is the Schrader valve. This is the most commonly used tube on wheels it's even on your car and even on wheel barrels. And this one here is the Presta valve.

How do you inflate a Schrader valve without a adapter?

How Do You Inflate a Presta Valve without an Adapter?

  1. Remove the valve cap. Find the place on the valve cap where it gets smaller. …
  2. Unscrew the valve on the tire.
  3. Place the modified cap upside down on the tire and screw it down a few twists.
  4. Attach the pump and inflate.

Apr 8, 2021

Can I use a Presta pump on a Schrader valve?

A Schrader-only pump has a pin in the center of the chuck to depress the Schrader stem’s check valve. If you try to put it on a Presta tube, it simply won’t fit.
Apr 14, 2022

How do you fill a Schrader valve tube?

Quote from video: It right on top of the valve straight on and then pull the lever to clamp it. Down. Then all we need to do is inflate it to the proper. Pressure.

How do I pump up a bike tire with a small valve?

Quote from video: Most pumps have a lever attachment like this you can pull the lever up to lock it in some of them have a press-on attachment either is fine push it on to the valve.

Why can’t I pump up my bike tire?

You may be using the wrong head on your pump for your valve stem style, you may have the pump fitted incorrectly, you valve stem may be damaged, there could be a puncture in your tire, your pump may be damaged, or if you are going tubeless it is possible your bead may not be set correctly.
Dec 22, 2021

What causes a tire not to take air?

a hole in the tread, probably from a nail or something sharp in the road. a hole in the sidewall, probably from an encounter with something sharp on the road. a poor seal where the tire attaches to the wheel, which lets air escape. a loose or improperly functioning tire valve.
Jan 27, 2020

How does a Schrader valve work?

Schrader valves consist of a threaded outer wall (to accept a cap) whose bottom half is wrapped in rubber and a spring-loaded check valve in the center. The valve allows airflow in one direction only, so to pump air into the tire, you need to press the inner pin down.

What does P and S mean on a bike pump?

Valve types

There are two basic types of valves that you’ll find on bikes: Presta and Schrader. For the most part, inner tubes and tubulars on road bikes will use Presta valves, and mountain bikes will use Schrader valves.
Jul 6, 2015

Which is better Schrader or Presta valve?

Presta valves also perform better over time compared to Schrader valves, in that they hold air more effectively and don’t degrade as quickly. They can also hold higher pressures, which makes them a must for track cycling where tyre pressures typically exceed 120psi.
Feb 15, 2022

How can you tell the difference between a Schrader valve and a Presta valve?

Quote from video: And or mountain bikes. The Schrader valve which is commonly found on most BMX bikes and/or comfort bikes is compatible.

Can I use a Presta pump on a Schrader valve?

A Schrader-only pump has a pin in the center of the chuck to depress the Schrader stem’s check valve. If you try to put it on a Presta tube, it simply won’t fit.
Apr 14, 2022

Can you use a normal bike pump on a Presta valve?

Most bike pumps are compatible with Presta valves but you will need to check before buying as some are not. Schrader valve pumps will not work with a Presta valve so you will need an adapter.

How do you use a Schrader air pump?

Quote from video: And the Dunlop valves for this for the Schrader we're using the one with the bigger end and all we do is lock it on to the valve push the lever away to secure it. And then pump as simple as that.

How do I know if I have Schrader or Presta?

The visual differences between the two are obvious, with the Presta (pictured above) being slimmer, lighter and having a lock nut to close that you can see on the top. Schrader valves are wider, more robust and have a spring mechanism on the inside to keep the valve closed, rather than a screwable top section.
Jul 6, 2015

Are Schrader and Presta tubes interchangeable?

Are Presta and Schrader valves interchangeable? Schrader valves typically won’t work on rims that are made for Presta valves, because they’re too wide. You can use a Presta valve on rim that’s made for a Schrader valve, but it’s not advisable. It will work in a pinch, but not good for an extended ride.

Are Presta and Schrader valves the same diameter?

They weigh 4–5g more than Presta valves. Presta and Dunlop valve stems are 6 mm in diameter, whereas Schrader valve stems for bicycle tires are 8 mm, allowing Prestas to be used on narrower, high-performance rims as on road racing bicycles.