Continuous Blend Nitrox Systems

Our CONTINUOUS BLEND NITROX SYSTEM will pay for itself before you fill 550 tanks!

Here are some approximate numbers :

· 50 liter of O2 will cost about US $6.00

· That will fill approximately 20 SCUBA tanks at 32%

· Each Nitrox tank fill costs you about US $0.30

· You can sell the Nitrox dive for an extra US $5.00 for a profit of $4.70 per tank fill.

· You profit will pay for the system in just 530 tank fills…

· NOW THINK OF ALL THE NITROX COURSES YOU CAN SELL !

· People love this ! A short weekend course and SUDDENLY they are a TECHNICAL DIVER.

· FREE INSTALLATION AND TRAINING ON YOUR NEW :

CONTINUOUS BLEND NITROX SYSTEM

Advantages of “through the compressor” continuous blending as compared to partial pressure:

Safer, easier, inexpensive, faster, reliable
Standard scuba air tanks can be used, no special O2 cleaning needed, no annual O2 cleaning of tanks and valves. No special O-rings.
One hour training, no need for a blender course.
Can use the O2 supply tank down to 5 bar, more efficient use of the oxygen.
No hazardous transferring of oxygen at high pressure
Nitrox tanks are filled at the same speed as standard air tanks.
Oxygen usage is about 25% better than with partial pressure. Unless you have a Hassco pump – it is 40% better if you are emptying tanks before refilling.
No clean air filters to change. A Laurence Factor filter system for partial pressure blending cost about 23 pesos ($0.41) per tank for replacement of the filter elements. This is just for the element and you still need more than 26 pesos of Oxygen.
System is user adjustable from 21% to 39% .Recommended maximum percent of oxygen is 36%, although all literature says up to 40% is safe. (NOAA studies)

Precautions:

Compressor must run synthetic oil in a well ventilated area to run cool.
The final filter should be changed per manufactures specification, to avoid oil build up.
Recommended maximum percent of oxygen is 36%, although NOAA studies says up to 40% is safe.

Continuous Blend Nitrox System Design:

The system is designed to mix the oxygen and air together in a homogeneous blend of nitrox at the desired percentage mix. Then the blend is compressed to tank pressure though a standard Scuba compressor. At mixtures of less than 40% this can be safely done.

To accomplish this we need a large buffer tank to smooth the pulse intake of a standard piston compressor. Inside the stainless steel buffer tank we have added three mixing chambers to insure the mix is 100% homogeneous. (no rich pockets of oxygen)

At the output of the buffer and blending tube we add an oxygen analyzer to measure the percentage of mix going into the compressor. This is the same mix that the scuba tank will be filled with.

A high speed stream of oxygen is injected into the beginning of the blending tube. This is done through a very small orifice. The amount of oxygen being introduced into the intake air stream can be adjusted with a pressure regulator from a oxygen supply tank. This gives full control of the mixture from 21% to 40%. The output pressure of the regulator is limited so that no more than 40% can be accidentally generated.

A solenoid has been added so that when the power to the compressor goes off , the supply of oxygen is stopped. This is a safety feature to prevent an excess of oxygen build up during a power outage.