Jfglass Diffy Pump Switch 2 Custom No 14 1
Jfglass Diffy Pump Switch 2 Custom No 14 2
Jfglass Diffy Pump Switch 2 Custom No 14 1
Jfglass Diffy Pump Switch 2 Custom No 14 2

JFGlass Switch 2 The Dab Hut Custom No. 14

$400.00

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JFGLASS | 1 OF 1 | CUSTOM NO. 14

A deep blue dome under dense green dichroic texture, a bright green mouthpiece, and an opal base. A one-of-one JFGlass diffusion pump for the Dr. Dabber Switch², hand-blown in Southern Oregon. Same flavor-first function as the clear pump, with a look that lives on this piece alone.

▶ Watch This Piece on VideoFumed and dichroic color work does not photograph honestly. It shifts as the piece turns, warm from one angle and cool from the next, and a still only catches one of those.

1 of 1
Single Original

USA
Blown by JFGlass

Switch²
Compatible Device

No. 14
Drop Number

Flavor First
Small chamber and long cooling path keep terps tight and bright. The diffusion pump style is widely regarded as the best in class for flavor preservation, especially for rosin and live concentrates.

One of One
A single hand-blown original. The color work on this piece exists nowhere else. When it sells, it’s gone for good. Function matches the clear pump exactly, you’re choosing on looks.

Water level matters. Fill just above the diffuser stem for proper function. Scroll down for the dedicated water level section with the full breakdown.

Ships Monday
Ships from Southwestern Michigan, typically 2 to 4 days to most of the US via UPS Ground.

Out of stock

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JFGlass | Southern Oregon | 1 of 1 Custom Diffy Pump

JFGlass Switch² The Dab Hut Custom No. 14

A deep blue dome under dense green dichroic texture, a bright green mouthpiece, and an opal base. The most technical color work in the set. A one-of-one US-blown diffusion pump for the Dr. Dabber Switch², hand-blown by JFGlass in Southern Oregon. Same flavor-first function as the clear pump, with color work that exists on this piece alone.

1 of 1
Single Original

USA
Blown by JFGlass

Switch²
Compatible Device

No. 14
Drop Number

This Piece

The Look of No. 14

A deep blue dome under dense green dichroic texture, a bright green mouthpiece, and an opal base. Hand-blown, so the pattern is exact to this one pump and nothing else in the drop shares it.

Dome
Color Work
Cobalt glass beneath a heavy green and gold dichroic layer, worked into a fine crosshatch that catches light differently at every angle. The closest thing in the drop to a scale pattern.

Mouthpiece
Color Work
Bright grass green and opaque, with a triple ridge collar and a wide flared head. It pulls the green out of the dichro and makes it the lead color.

Base
Color Work
Clear running into opal at the base with a yellow fume wash, warm against a cool dome.

On Video

See It In Hand

Photos only get you so far. This is the actual piece, shot in our hands, so you can see the scale, the finish and how it behaves in real light before you buy it.

How the Pump Works

Why Diffusion Pumps Hit Different

If you're coming from a standard bubbler or recycler, the diffusion pump is a different category of attachment. Three things explain the difference.

Small Chamber, Big Flavor
The internal vapor volume is small compared to a recycler or fab egg. Vapor doesn't sit and stale out. It moves through the pump and into your lungs while terps are still bright. This is the main reason diffusion pumps are widely cited as the best dab style for flavor preservation.
Long Cooling Path
Vapor travels a longer route from the heater to the mouthpiece than a typical bubbler. That extra distance pulls heat out of the hit. Result is a hit that's full strength on flavor without scorching the throat the way some direct-path attachments can.
The Diffuser Ball
A small glass ball sits in the pump chamber. On the pull, the ball dances on the airflow and breaks the draw into a stream of fine micro-bubbles through the water, creating the signature pump chug. The visual is satisfying, the function is real, and the chamber design lets the diffusion happen without adding a long bubbler stack between you and the vapor.
Kickback Bubble Dome Mouthpiece
The mouthpiece is a bubble dome with a kickback bend. The dome shape catches splashback, the kickback angle keeps the pull comfortable, and the curve gives the piece a profile that feels good in the hand or on the table.
How to Pull It

Two Styles, One Pump

The diffusion pump is one of the more user-tunable attachments out there. Same piece, different draws, different experiences.

Hard Pull
Open and Airy
Pull hard and the pump opens up. Air moves freely, the ball lifts, and the draw feels nearly unrestricted. Good for big rips and clearing the chamber fast. This is how many longtime pump users describe their daily draw.
Soft Pull
Chuggy and Slow
Pull soft and the pump pushes back a touch. The ball doesn't lift as much, the water doesn't move as freely, and you feel the chug build. Good for sipping a small dab and tasting every second of it. Useful for low-temp rosin sessions.
Tune the Draw
Use Your Carb Cap
Cap selection further tunes the experience. Open caps let you pull harder with less restriction. Tighter or restricted caps add resistance and slow the draw. There's no wrong answer. Pick the cap that matches the pull style you prefer.
Water Level

Get the Water Right

Water level is the single most important variable on a diffusion pump. Get it right and the piece performs the way it should. Get it wrong and it doesn't matter what cap or dab you run, the function falls off.

JFGlass diffusion pump water level reference for the Dr. Dabber Switch 2
The Rule
Fill just above the diffuser stem. Not over it by a lot. Just past it. The ball needs water around it but the pump chamber needs air space above the water to function.
Too Little Water
No micro-bubble action, no chug, vapor passes through dry. You lose the cooling and the diffusion both. The pump becomes effectively a hot, direct path.
Too Much Water
Splashback risk on big pulls, and the draw gets harder to start. The kickback dome helps with splash but you don't want to push it. Stay just over the diffuser stem.
Refresh Your Water
Small chamber means residue builds up fast. Change the water every few sessions. Flavor stays bright when the water stays clean.
Carb Cap Pairing

Pick a Cap That Matches Your Pull

Any Switch² carb cap works, joystick style or auto spinner. The right one depends on how you want the draw to feel. Three quick reference points below.

If You Like the Chug
Open or Stock Cap
A more open cap lets you really lean into the pump's signature draw. The bubbles break clean, the chug is loud and visible, and the ball moves the way it's meant to.
If You Like a Slow Sip
Tight or Restricted Cap
A tighter cap adds resistance to the draw. Combined with a soft pull, you get a slow, chuggy session that brings out the flavor of low-temp rosin and live concentrates.
If You're Not Sure Yet
Start with Stock
The stock Switch² cap is a fine starting point. Run a few sessions and figure out which direction you want to go. Then upgrade the cap to match your preferred style.
Know Before You Buy

Straight Talk

Heads Up
Soft Pull Feels Restricted
Some users report the pump feels somewhat restricted on a soft pull. This is the pump's design working as intended, not a defect. Pull harder and the draw opens up. If you only ever pull soft, you may want to look at a different attachment style. If you're flexible on draw, you'll get the full range of what the pump can do.
Heads Up
Water Level Is Not Optional
A diffusion pump won't perform without the water set correctly. Reference the water level section above before your first session. If the function feels off, water level is almost always the cause.
Heads Up
Hand-Blown Means Slight Variations
Every JFGlass piece is blown by hand. Tube thickness, ball weight, and decorative touches can vary slightly piece to piece. This is part of owning a custom US-blown attachment. Function is consistent. Cosmetics carry the artist's signature.
Heads Up
Clear Now, Colored Later
This listing is for the clear colorway only. JFGlass also offers colored custom versions that run higher in price and function the same. Those will be available as separate listings, and eventually under a combined listing the same way our SAML Switch² lineup is structured.
Included

What's In the Box

Everything you need to run the JFGlass diffusion pump on your Switch². No filler, no extras you'll never use.

Resources

Questions Before You Buy?

Drop into the Discord or send us a message. Pumps are a different style of attachment and we're happy to help you figure out if it's the right fit for your setup.

US-Blown Custom Glass | Value Pricing
A Real US Custom for the Switch²

JFGlass built a name in the community on diffusion pumps that perform. Now that work is available for the Switch², at a price that makes a US-blown custom an actual option for a daily driver. Flavor-first design, satisfying chug, and a kickback dome mouthpiece. Pick yours up before the next batch ships out.

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Veteran-Owned and Operated. Sourced direct from JFGlass in Southern Oregon. US-blown custom glass at a price that respects your wallet.
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