Poseidon Jetstream MK3

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$ 429.95

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Poseidon Jetstream MK3


Poseidon Jetstream MK3

Poseidon Jetstream MK3

Poseidon Jetstream MK3

Poseidon Jetstream MK3



The Jetstream Mk3 is an updated version of the classic Jetstream regulator.

We have now connected a Jetstream second stage with an Xstream first stage, thus creating a high performing regulator.

The over pressure valve is now built in to the Xstream first stage allowing us to remove the over pressure valve from the hose.

We have also changed that thread on the second stage hose connection to a standard 9/16 thread.

Delivered with a 70 cm hose.

Approved to depth (m/f) 50/165

IM Pressure (bar/psi) 9.5/138

Air Yes

Trimix (max 21% O2) Yes

Nitrox No

Oxygen (99,95%) No

Max working pressure bar/psi 300/4350

Anti-Freeze protection Accessory

US Navy Tested Yes

EN250 approved (cold water) Yes

Xstream Deep first stage

Color: Black

Technology: Roll diaphragm

Material: Brass

Valve technology: Spheric

Wheel mounted: Side

LP ports 3/8: 5

HP port 7/16: 2

Flow rate (l/min): 5500

O2 clean: No

DIN G5/8: Yes

EN144-3 compatible: No

Separate yoke: Accessory

Zytel HP seat: Yes

Built in overpressure valve: Yes

Anti-freeze protected: Yes

2nd stage Jetstream Mk3

Color Black

Material ASA, Stainless steel, Brass

Weight (g/lb) 190/0.42

Volume (ml/cuin) 80/4.88

Valve technology Upstream

Flowrate (l/cuft per min) 1800/63

Purge button on side Yes

Oxygen clean No

Poseidon Jetstream MK3 is a product that corresponds to the Regulators set category within Regulators selection at your dive store, scubastore. Wait no more and learn about all the advantages belonging to the community of scubastore. What are the advantages of Poseidon Jetstream MK3? This product is designed specifically to provide good support and entirely based on our passion for dive.


Type of connection:
Hose included:
EAN retail barcodes:

. Regulators

Use the chart below to determine your size. If you´re on the borderline between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit. If your measurements for bust and waist correspond to two different suggested sizes, order the size indicated by your bust measurement.

Customer reviews & questions (6)

Product rating 5 / 5


the best regulator

This is the best regulator ever,I ve had it for 9 years. very reliable especially for deep dives, sure air flow no matter what depth (and i have broken the rules sometimes). It s great for beginners as well as professionals. You could never put the second stage in your mouth upside down, thus there is no chance to inhale water like otrher regulators. Not too good for teaching courses as it is irregular (purge button is placed differently ETC...) definitely the best regulator.



I live in Sweden and everybody uses them here. I have yet to see one freeze. I hate them though. As you inhale you can feel you tonsils vibrating from the hurricane of wind it shoves down your throat. The regulator even vibrates from the force when set to “sensitive” and it is HUGE. I got sick of it and started using my MK25 S600 just to see how long it would take before it froze. 37 dives later in ice cold water and it still has not shown a tendency to freeze. Done dives were a few Apex regulator froze and my reg did not. Guess Scubapro was not BS’n about the having water flow though the regulator. All the best Erik Adler



I own a few different regulators and this is the one I reach for first...unfortunately it s also the one my dive buddies reach for first! Lots of air, no jaw fatigue, good field of view for U/W photography.


The best

Probably the best Regulator in the world! uppsidedown big breath doesn t matther!! gives you the air you want! and has lifetime guaratii



What I like best with this (have had it for ten years) is that the air escapes the regulator away from your face, not in front of your vision. Perfect when you´re taking photos, no need to hold your breath anymore :)


Great product

without any doubt is the best of all. if we talk about him and the Ferrari car

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