Hiwi Adapter W 21,8

Hiwi Adapter W 21,8

  • Can be used in combination with returnable cylinders
  • Made of high-tensile steel
  • Fits in W21,8 x G14 threads according to DIN477 standards
  • Made for Hiwi pressure reducer
In stock
Free shipping on orders over € 60,- within Germany Change region
Express delivery possible
1-3 business days - order today and we’ll deliver Saturday at the earliest
I want to order to 
incl. VAT
plus € 5,90 Shipping
Item is now in your shopping cart!
View my cart

Item question

We’re here for you!

Please enter your question and e-mail and we’ll contact you as soon as possible. It usually takes us up to 24 hours during business days to respond.

Thank you for your question!

Thank you, we’ll get in touch!

Close window

You already sent us a question.

Please wait a few minutes


The Hiwi - Adapter W21,8 enables you to integrate reusable Sodastream CO2 bottles into your existing Hiwi pressure reducer system.

The adapter is made for the Hiwi pressure reducer.


  • Suitable for mid sized and grand tanks
  • The qualitiy made adaptor comes from the CO2 pros at Hiwi
  • Bottle thread: W21,8 x 14G
  • The thread is made according to UK, Europe, Japan and Taiwan standard (BS341 / DIN477 / W21.8)


Hiwi - Adapter - W 21,8
Diameter 21,8 mm
Length 38 mm



Hiwi is a renowned German manufacturer of CO2 pressure regulators. The highest level of quality and a long useful life are in their focus. These high quality standards do not exclude attractive prices, though.

Especially in aquascaping, the addition of CO2 for the plants is something very basic, and thus it is really important to choose good CO2 supplying equipment. Hiwi meets even the highest quality standards in every aspect und is thus the best choice when it comes to CO2 pressure regulators.

General information

Item no.
Weight 0,10 kg
Shipping weight 0,10 kg

Customers ask customers

You have questions about this product? Ask other customer or our support team about this product!

Customer reviews

This item has not been rated
Please sign in if you want to write a review. Sign in
5 Stars(0)
4 Stars(0)
3 Stars(0)
2 Stars(0)
1 Star(0)