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How to Measure and Buy the Right Downstem

How to Measure and Buy the Right Downstem

Know what to look for, and buy right.

Downstems are an essential part of any bong or water pipe. They function by transporting the smoke from the bowl or slide into the water chamber for a cooler and smoother hit. Just like the bongs and water pipes they accompany, downstems come in a large variety of sizes, and styles.

Buying a new downstem

When buying a new downstem for your favourite piece, the most important thing to know is size, which can actually be pretty confusing if it is your first time buying a replacement. When it comes to downstems, we can assume the ground joint is female, but there are 3 more measurements that you’ll need:

  • Length of the Downstem
  • Ground Joint Size (the bong or water pipe joint size)
  • Bowl Size

A way to measure that works

If you don’t have your curre……..

Know Your Length If you don’t have your current downstem available to measure the length, you can use a pencil or any long object that fits inside the bong/water pipe to measure the inner chamber.

Insert the pencil into the ……

Pencil Method Insert the pencil into the inner chamber of the bong through the joint opening until the tip is roughly 2 cm or 0.5 inches from the glass on the other side. Mark the pencil and then measure from the mark to the tip. That will be your down-stem length.

Ground Joint Size

Use a dime for reference

Measure the inside diameter of your ….

The Ground Joint

Measure the inside diameter of your bongs ground joint. It will be either 10mm, 14mm, or close to 19mm. If you don’t have measuring tape nearby, you can use a dime. If the dime fits through the hole, it is 19mm. If it does not, it’s likely 14mm as downstems do not usually come in 10mm.

It is important to be sure of the correct size when ordering a new downstem: wider joints obviously won’t fit, and narrower joints won’t create the air-tight seal you need for optimal performance.

Bowl/ Downstem Size

Downstems have one joint for the bowl and another to connect to the bong. Downstems come in:

  • 14mm to 14mm (14/14)
  • 18mm to 18mm (18/18)
  • 14mm to 18mm (14/18)
  • 18mm to 14mm (18/14)

The first number represents the size of the joint in your bong. The second number represents the size of the bowl.

For example, if you see a description such as 14/20 or 14>20, this means your bong has a 14mm joint, and the diffuser you’re looking at will transform that 14mm joint into a 20mm joint. Now you can fit a bigger bowl into that bong!

If the description was 20/14 or 20>14, your bong has a 20mm joint and the diffuser will hold a 14mm bowl.

Most commonly known

Two popular styles of down …..

Most Popular Styles

Two popular styles of downstems are the “Flush Mount” and “High Profile”.

Flush Mount Downstems

Have an opening that does not stick out much from the opening of the joint. The length of Flush Mount Downstems are only a little longer than the length needed in the inner chamber of the bong.

High Profile Downstems

Stick out from the opening of the bong, and can sometimes add up to between 0.5 – 1.5″ inches to the length of the bong.

Now that you’re ready to purchase a replacement downstem diffuser for your bong, check out our selection of downstems here.

Downstems are an essential part of any bong or waterpipe. They function by transporting the smoke from the bowl or slide into the water chamber for a cooler and smoother hit. Find all the information you need here on how to order a replacement downstem for your favourite piece!

Bong downstem sizes

*Offer does not apply to shipping or sales tax (if any)

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How to Measure Your Downstem for Ideal Fit and Function

Posted by Jack Daniel (Edited by Jay Dreadhead) on 7th Sep 2017

Removable glass downstems can be very handy, but sometimes they break and sometimes you just want to experience a new style of diffusion. The Dab Lab has a sweet selection of new downstems in a variety of sizes for virtually any style of bong or waterpipe. This handy guide will show you what measurements are needed to ensure the ideal fit and function on your new downstem from The Dab Lab!

Removable and interchangeable downstems are pretty rare on dab rigs, and are not as common as they used to be on waterpipes and bongs either. Still, they are nice to have. They make cleaning your bong so much easier, and allow you to change up the diffusion if you have multiple downstems each with their own array of holes and/or slits at the bottom.

Here at The Dab Lab, we carry a super affordable selection of downstems , and a common question that we often get is: How do I know what size or length I will need my new downstem to be?

There are actually a few different measurements that you need to keep in mind when buying a new downstem. These measurements are given in millimeters (mm). If you do not have a metric ruler handy, remember tha t 1” = 25.4mm

Here at The Dab Lab, we determine the length of a downstem to be the clear section only – from the bottom of the frosted glass joint, down. Nothing is worse than getting a new downstem and it’s too short to reach the water, or too long to even fit at all! We have options ranging from 75mm (roughly 3 inches) to 140mm (roughly 5.5 inches) to make sure that you get exactly what you need every time you shop at The Dab Lab.

If your downstem broke and you are unable to measure it, don’t worry, we have an easy solution.

1. Take a strand of uncooked spaghetti pasta. Stick it in your bong where the downstem would normally go. Position it parallel with the joint (don’t angle it or your measurement may be off) and make sure it is as far in as it can go.

2. Break off the extra that sticks out past the joint. Take the strand of spaghetti out of your bong and measure it.

3. Take that measurement and subtract 22mm (that accounts for the length of the joint) .

NOTE: Some bongs, like the ones made by MIO Glass, are made with hand worked joints. In that case, you will need to measure the frosted section on the bong where the downstem goes in and use that number to subtract from your spaghetti measurement.

That’s it. Now you have the exact measurement of the downstem you will need. If the exact length is not available go with the closest available size down.

JOINT SIZE

The size of the joint on your dab rig or waterpipe will most commonly be either 14mm or 18mm. If you are unsure of what you have, simply measure the widest part of the opening on the joint, from inner edge to inner edge.

If you do not have any way to make that measurement, you can use the ol’ Dime Trick. See, a dime coin will fit in an 18mm joint, but will be too big to fit in a 14mm joint.

BOWL OR SLDIE SIZE

If you already have a bowl or slide that you’ll be combining with your new downstem, or if you are buying a new one of those too , you need to make sure that the opening at the top of the new downstem is the correct size to fit your slide into.

Again, most common sizes are either 14mm or 18mm. It can get tricky as many downstems fit into an 18mm joint, but accommodate a 14mm bowl, so be sure to read the product description to be sure you are getting the right accessory!

Still unsure? Hit us up with pictures and we can get you what you need. With this handy guide from your buds at The Dab Lab, you should have no problem determining exactly which new downstem will help you keep the sesh lit!

Removable glass downstems can be very handy, but sometimes they break and sometimes you just want to experience a new style of diffusion. The Dab Lab has a sweet selection of new downstems in a variety of sizes for virtually any style of bong or waterpipe. This handy guide will show you what measurements are needed to ensure the ideal fit and function on your new downstem from The Dab Lab!   Removable and interchangeable downstems are pretty rare on dab rigs, and are not as common as they used to be on waterpipes and bongs either. Still, they are nice to have. They make cleaning your bong so much easier, and allow you to change up the diffusion if you have multiple downstems each with their own array of holes and/or slits at the bottom.  Here at The Dab Lab, we carry a super affordable selection of downstems, and a common question that we often get is: How do I know what size or length I will need my new downstem to be? There are actually a few different measurements that you need to keep in mind when buying a new downstem. These measurements are given in millimeters (mm). If you do not have a metric ruler handy, remember that 1” = 25.4mmDOWNSTEM LENGTH Here at The Dab Lab, we determine the length of a downstem to be the clear section only – from the bottom of the frosted glass joint, down. Nothing is worse than getting a new downstem and it’s too short to reach the water, or too long to even fit at all! We have options ranging from 75mm (roughly 3 inches) to 140mm (roughly 5.5 inches) to make sure that you get exactly what you need every time you shop at The Dab Lab. If your downstem broke and you are unable to measure it, don’t worry, we have an easy solution. 1. Take a strand of uncooked spaghetti pasta. Stick it in your bong where the downstem would normally go. Position it parallel with the joint (don’t angle it or your measurement may be off) and make sure it is as far in as it can go. 2. Break off the extra that sticks out past the joint. Take the strand of spaghetti out of your bong and measure it. 3. Take that measurement and subtract 22mm (that accounts for the length of the joint) . NOTE: Some bongs, like the ones made by MIO Glass, are made with hand worked joints. In that case, you will need to measure the frosted section on the bong where the downstem goes in and use that number to subtract from your spaghetti measurement. That’s it. Now you have the exact measurement of the downstem you will need. If the exact length is not available go with the closest available size down. JOINT SIZE The size of the joint on your dab rig or waterpipe will most commonly be either 14mm or 18mm. If you are unsure of what you have, simply measure the widest part of the opening on the joint, from inner edge to inner edge. If you do not have any way to make that measurement, you can use the ol’ Dime Trick. See, a dime coin will fit in an 18mm joint, but will be too big to fit in a 14mm joint.BOWL OR SLDIE SIZE If you already have a bowl or slide that you’ll be combining with your new downstem, or if you are buying a new one of those too, you need to make sure that the opening at the top of the new downstem is the correct size to fit your slide into. Again, most common sizes are either 14mm or 18mm. It can get tricky as many downstems fit into an 18mm joint, but accommodate a 14mm bowl, so be sure to read the product description to be sure you are getting the right accessory! Still unsure? Hit us up with pictures and we can get you what you need. With this handy guide from your buds at The Dab Lab, you should have no problem determining exactly which new downstem will help you keep the sesh lit! ]]>