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The Schwalbe DV7 Inner Tube is made for BMX, folding bikes and 20" kids' bikes. Schwalbe's standard butyl inner tube – the dependable workhorse that quietly gets on with the job, ride after ride.
It fits 20 x 1.50-2.40" tyres with a 40mm Dunlop valve. Always check the ETRTO number moulded into your tyre sidewall – it’s the one size that never lies – and match it against the table below.
Key Features
Premium butyl rubber for excellent air retention – less time with the pump, more time riding
Uniform wall thickness and tight quality control for proven, long-term reliability
Recyclable through Schwalbe’s tube recycling programme
Specification
Schwalbe code: DV7 (Schwalbe No. 7)
Valve: Dunlop valve (also called DV or Woods valve) – the traditional valve found on many city, Dutch-style and older bikes
Valve length: 40mm
Fits: 20 x 1.50-2.40" tyres
ETRTO range: 40/62-406, 54-428
Material: Butyl rubber
Weight: approx. 145g
Tyre Size Compatibility
This tube fits the following tyre sizes. French and imperial sizes are shown where a common equivalent exists.
Metric (ETRTO)
French
Imperial
40-406
–
20 x 1.50"
42-406
–
20 x 1.60"
44-406
–
20 x 1.70"
47-406
–
20 x 1.75"
50-406
–
20 x 2.00"
54-406
–
20 x 2.10"
57-406
–
20 x 2.25"
60-406
–
20 x 2.35"
62-406
–
20 x 2.40"
54-428
–
–
Good to Know
Fit the tube with a little air in it to give it shape and avoid pinching it under the tyre bead
Check your rim’s valve hole suits the valve type before ordering
Code:
DELIVERY
Delivery to mainland UK addresses are free for orders over £40. Except when you choose delivery to a third party (Click and Collect) there is a charge of £5.95 to cover some of the additional cost the couriers charge for this service. If you choose to collect from Fawkes warehouse there is no shipping charge.
There will an additional charge for deliveries to Highlands and Islands.
RETURNS TO FAWKES
Whether it’s a jersey that doesn’t fit, or the colour is not quite right, sometimes you’ll need to return items to us.
If an item is 'as new' and has not been used or fitted in any way, you can return it to us by post within 90 days of delivery for a refund. Please ensure that the goods are returned in their original packaging and are in an unused condition.
Please click HEREto print and then complete the returns form and include it inside your parcel.
If you wish you can use our Royal Mail Returns service please follow the instructions on the link below to return your parcel to us.
Please pack the item carefully to avoid damaged during shipping.
Customers need to pay the cost of return delivery unless the item is faulty and this will be deducted from your refund, currently £3.95.
If your have a large item e.g. Child seat, Bike, trailer etc. please contact our customer service team at Guy@fawkes-cycles.co.uk to arrange the best way to return your item, the cost will be deducted from your refund.
You will not receive a refund for the retail value of any free or promotional items you are sent, and you will be charged if they are not returned.
UNWANTED ITEMS
If you change your mind on your purchase, you have a full 90 days to return it for a refund. All Goods must be unused, in a saleable condition and in their original packaging with all labels still attached.
Please pack the item carefully to avoid damaged during shipping.
There are some exclusions to our 90 day returns policy, which are detailed below:
Nutritional products or those with a best before date must be returned within 28 days*
Any customised items such as wheel builds cannot be returned*
GPS systems such as sports watches or cycle computers can only be returned if unregistered*
For hygiene reasons, any intimate garments such as facemasks, underwear and swimsuits can only be returned if the items are faulty.
*Unless faulty
If you wish to return your item for a refund, please follow the returns procedure above.
We try our best to process all refunds within 14 working days. We'll refund your item via your original payment method.
You will not receive a refund for the retail value of any free items you are sent, and Fawkes may charge you for this item if you fail to return it
FAULTY ITEMS
If you feel that your purchase has developed a fault, then please contact us with photographs of the issue before returning any goods - we may be able to solve your problem without you incurring any further inconvenience.
If you find a fault with your item, send it back to us and we'll take a look at it as soon as we can. Items sent back to us will undergo an inspection and it may be necessary to send the item away to the manufacturer to confirm the fault. If we confirm a manufacturing fault, we'll happily replace or refund it.
Please pack the item carefully to avoid damaged during shipping.
Faulty items should be returned within a reasonable time and in a clean and dry condition. PLEASE NOTE, WE WILL NOT PROCESS DIRTY ITEMS.
Please enclose all your details and a covering note explaining the fault and any other useful details.
We'll try to get back to you within 14 working days of receipt of your parcel, although during busy periods this may take slightly longer.
Your statutory rights are not affected.
We reserve the right to recharge return carriage on items where no fault is identified.
Customer Service Email: Guy@Fawkes-Cycles.co.uk
Please contact us for our Payment & Security policy.
There are three types that have become market standards and it is difficult to make any particular recommendation. The most important aspect is that the valve fits the rim valve hole and that an appropriate pump is available. Contrary to popular belief, major air retention differences are now a thing of the past. All valves provide excellent performance and are adapted to high-pressure use.
The SCHRADER (Auto/Car) valve can be inflated very easily at a filling station and is pleasantly unproblematic. A wide variety of general purpose pumps also fit this valve type.
The PRESTA (Sclaverand) valve is narrower than other valves (6 instead of 8 mm). It needs a smaller rim hole and is therefore particularly well suited for narrow racing bike rims. It is also approx. 4-5 g lighter than a car valve or Dunlop valve.
It can be locked manually with the knurled nut. Before inflating, the knurled nut must be loosened. First time users frequently have some problems. Also the thin top pin can be easily bent when attaching and removing the pump connector.
Caution: Be aware that using Presta valve tubes on rims with larger valve holes often leads to a valve tear off when the sharp metal edges around the valve hole cut the valve stem off the tube.
The DUNLOP or WOODS valve. The classical bicycle valve or Dunlop valve is still the most common worldwide but is becoming rare on modern bikes. Most cyclists are familiar with it. The valve core can easily be replaced and air can be released very quickly. Fitting a tube with a Dunlop valve is more awkward, as the valve core and locknut need to be removed in order to fit the valve through the valve hole. Inflation is only possible once the core and the nut are back in place.
With traditional Dunlop valves, it is impossible to check the inflation pressure. However, the special Schwalbe Dunlop valve allows a return airflow, so that it is now possible to check the inflation pressure with an Airmax pressure gauge.
