M18x1.5 TR21-4 Thread CO2 Cylinder Refill Adapter Soda Cylinder Valve Suitable for Sodastream Bottle Connect to Co2 Cylinder

Product Information

Having gallons of seltzer water for pennies on the dollar sounds great in theory, but there are a couple of important things you should consider before purchasing a SodaStream adapter and a CO₂ tank, so you don’t end up with a useless piece of accessory. Here are the most important things to consider

This eliminates the need for brakes or other holding devices to sustain loads after they have been positioned.

Uses: The adapter is mounted on the TR21-4 threaded soda machine cylinder to act as a conversion interface Dimensional Charts relating to Trapezoidal Threads from 8 - 95mm, 100 - 195mm, 200 - 295mm, 300 - 560mm and 600 - 1120mm. Trapezoidal threads are defined as follows by ISO standards: ISO 2901, ISO 2901, ISO 2903, ISO 2904 and ISO 103. Gages ISO metric trapezoidal screw thread are defined in the DIN 103-9 . Dimensions shown are in mm, if you wish to convert to Inches, please use our universal converter. Trapezoidal Thread Information Trapezoidal threads are codified by DIN 103. Although metric screw threads are generally more prevalent worldwide than imperial threads, the Acme thread is very common worldwide, and may be more widely used than the trapezoidal metric thread.

Low lead angles offer a high mechanical advantage for Trapezoidal screws. This means they require less input torque for a given load than other power screws. Corrosion-Resistant:The surface is electroplated, bright as a mirror, corrosion-resistant, not easy to oxidize and rust. Practical & Convenient to Use:Good sealing performance, no leakage when connected with the cylinder, more convenient to use. Trapezoidal lead screws and nuts are power transmission screw threads similar to the Acme series but made to metric dimensions and standards. One such standard is the German Metrisches ISO-Trapezgewinde DIN 103 which has been adopted by the International Organization for Standards (ISO). Sometimes misnamed "metric Acme" or "metric M series Acme"

Be Aware of the Residual Pressure Valve (RPV)

Practical & Convenient to Use:Good sealing performance, no air leakage when connected with the cylinder, more convenient to use. Trapezoidal lead screws look like Acme screws and have the same stout thread form and the same robust and durable features as the Acme series. To refill the SodaStream cylinder completely, it has to be as cold as possible. We recommend putting it in the freezer for at least an hour before starting the filling process. Corrosion-Resistant:The surface is electroplated, as a mirror, corrosion-resistant, not easy to oxidize and rust.

Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.

What Thread Type Does Your CO₂ Tank Valve Have?

where Tr designates a trapezoidal thread, 8 is the nominal diameter in millimeters, and 1.5 is the pitch in millimeters. When there is no suffix it is a single start thread. If there is a suffix then the value after the multiplication sign is the lead and the value in the parentheses is the pitch. For example: TR 60 x 18 (P9) LH would denoted two starts, as the lead divided by the pitch is two. The "LH" denotes a left hand thread.