Poseidon Jetstream Review

The Poseidon Jetstream is considered to be a very reliable and robust Regulator. People who own it usually use it for many years in various conditions without any failures. Some people have even used the same regulator for more than 20 years! It’s considered to operate especially well in cold water extreme environmental conditions. It’s also considered to operate well in deep technical dives (over 50 meters or 164 feet). That’s why really hardcore technical divers often use this regulator. Actually, one Poseidon technician has explained to me that it gives the optimal air flow starting from the depth of 30 meters or 100 feet. Meaning that in shallower depths it gives “too much” air, which some people find a little bit irritating and annoying. Some divers claim that with the Poseidon “air is literally forced down your throat”.

The first stage has a minimal design. It has 2 High pressure ports and 4 low pressure ports.

The Poseidon second stage is designed to be handed from either the right or the left with the same ease. This is very useful in emergency situations when 2 divers have to use the same regulator. In these situations you usually don’t wish to encounter any kind of problems or difficulties.

The maintenance of the Poseidon Jetstream is considered to be a little bit more problematic than other regulators. It’s considered to be “sensitive” to dirt, sand, etc… Not every scuba technician would know how to service it, since it’s different from other, more common regulators. So if you encounter a problem with your regulator on a trip or on a diving vacation in some place where they don’t have a dive shop that sells Poseidon, you might be in trouble. Also, some people claim that the service of the Poseidon is more expensive than other regulators. I’ve checked it in the local shop (In Eilat, Israel) and have found it not to be true. However, you should check in your local dive store.

Another thing that is important to know is that Poseidon tends to update the first stage every few years, and there are different “model numbers”. Usually, once there’s a newer version of the first stage, it becomes more difficult to obtain spare parts for the older versions.

 

Here are some technical specifications:

Approved to depth (m/f)	50/165
IP(bar/psi)	9.5/138
Air	Yes
Nitrox 50%	n/a
Oxygen 99,95%	n/a
Trimix	n/a
Working pressure 300 bar	Yes
Anti-Freeze protection	Accessory
O-rings	Nitril
US Navy Tested	Yes
Oxygen Approved (EN738-1)	n/a
NORSOK approved	n/a
EN250 approved (cold water)	Yes
CE Cold water approved	Yes
24 month warranty	Yes

2nd stage Jetstream,Black
Color	Black
Material	ASA
	Stainless steel
	Brass
Weight (g/lb)	190/0.42
Volume (ml/cuin)	80/4.88
Technique	Upstream
Flowrate (l/cuft per min)	1800/63
Oxygen cleaned	n/a
Servoassisted	Yes
Safety valve	Yes
Swiveling	Yes
Automatic Venturi assist	Yes
Automatic Inhalation control	Yes
Gascoded cover	n/a
Dismountable w/o tools	n/a
Non keyed (no up or down)	Yes
Anatomic Mouthpiece	Yes
Push button on side	Yes

1st stage G 5/8
Color	Metal
Technique	Diaphragm
Material	Chrome / Brass
Valve technique	Piston
Wheel mount	Side
LP 3/8"/HP 7/16" ports	4/2
Flowrate (l/cuft per min)	8200/290
Oxygen cleaned	n/a
DIN 5/8" Connection	Yes
EN144-3 Connection	n/a
Separate Yoke	Accessory
Zytel HP seat	n/a
Safety valve	Yes
Thermodynamic anti-freeze prot.	n/a

 

Here is the link to the Manufacturer's website.