W21.8-14 converter adapter for the Cardihaler regulator

Cardihaler Converter W21.8-14

250,00 SEK
Skip to product information
W21.8-14 converter adapter for the Cardihaler regulator

Cardihaler Converter W21.8-14

250,00 SEK

Taxes included.

Delivery time: 3-5 days

The Cardihaler Converter W21.8-14 connects the Cardihaler regulator (TR21x4) to larger CO₂ cylinders with a W21.8-14 valve (21.8 mm diameter, 14 threads per inch), the standard in Europe and most of the rest of the world. The same thread has local names, including DIN 477 No. 6 (Germany), BS 341 Part 1 No. 8 (UK) and NF type C (France). It enables a secure and airtight connection with approved Cardihaler components. Cylinders compatible with SodaStream screw-in connect to the regulator directly and do not need a converter. Included with Cardihaler orders to the EU, Australia and New Zealand. Sold separately for all other orders. Intended as a replacement or additional component for Cardihaler users.

Key Features

Cardihaler-compatible converter accessory
W21.8-14 connection adapter for larger CO₂ cylinders
Ensures secure and airtight connection
Precision-engineered for reliable performance
Sold separately

Specifications

Product: Cardihaler Converter W21.8-14

Thread: W21.8-14 (21.8 mm diameter, 14 threads per inch)

Also known as: DIN 477 No. 6 (Germany), SN 219505 No. 7 (Switzerland), BS 341 Part 1 No. 8 (UK), NF type C (France)

Connects: Cardihaler regulator (TR21x4) to larger CO₂ cylinders with a W21.8-14 valve (Europe and rest of the world)

Compatibility: Designed for use with the Cardihaler™ and the Cardistone

Material and Care Instructions 

Keep the threads clean and free of debris. Wipe metal surfaces with a dry cloth.

Hand-tighten first, then snug with the wrench. Do not overtighten.

Check for leaks weekly by applying a little soapy water around the connections. If you see bubbles or hear hissing, do not use the system until the connection is secure.

What Is Included in the Package 

The package includes 1 Cardihaler Converter W21.8-14.

Manual and Resources
FAQs

Find complete FAQs in our Help Center

Go to Help Center

Breathe better, change your life

Our products are grounded in science and shaped by years of research, testing, and careful experimentation before reaching you.

Our collections

Education helps us understand our bodies and unlock the power of breathing.

Book Conscious Breathing

Book Conscious Breathing

Carbon Dioxide in Medicine (E-book)

Carbon Dioxide in Medicine (E-book)

Shut Your Mouth - Save Your Life (E-book)

Shut Your Mouth - Save Your Life (E-book)

Brochure: 28-Day Breath Training Program

Brochure: 28-Day Breath Training Program

Abstract vein texture in brown tones

CO2 Academy

Carbon dioxide (CO₂) is a key regulator of human physiology, influencing respiration, oxygen delivery, circulation, blood pH, and nervous system function. This resource presents a curated selection of peer reviewed research on how CO₂ levels shaped by breathing patterns or therapeutic applications affect physiological regulation, without making health or treatment claims.

Read All Articles