LPG Air Mixers

What can it do?

  • Mix propane (LPG) with air to provide similar burning values to NG and similar on the Wobbe Index (Gas Composition Match Example 12A)
  • Restore lifelines to disaster areas
  • Allow normal life to continue during emergency or maintenance
  • Provide backup to cogeneration systems

What makes the PA a unique innovation?

  • Does not use electricity or external power source
  • Using pressure of propane and air
  • Easily portable / transportable
  • Available in a range of sizes for different projects
  • No need to change jets etc. in cookers, heaters…….
  • Without any complicated adjustments it produces a stable calorific value.
  • The resource is LP gas which is easy to obtain  so that we can use PA easily.
  • It is convenient to carry and move because it is small and light.
  • PA is safe because it automatically stops the resource gas supply if any problems should occur.
  • It is easy to control the residual gas in cylinders because PA has a counter for this specific purpose.


Imagine an earthquake, an act of terrorism, general gas mains maintenance – the gas main to a number of houses, or a hospital, or emergency kitchen has been cut, broken, or just removed for replacement. You can’t use LPG as the jets in the appliances will need changing and you don’t have time for that.

The PA System takes LPG (propane) and mixes it with air producing at the outlet a synthetic gas with the equivalent burning properties and wobbe index as Natural Gas. This system was a key lifeline throughout recent disasters in Japan, but the PA is not just for disaster relief.

General maintenance work can cut-off gas supplies for minutes, hours, days. Disruption to family life, work environments, hospitals and schools can all be kept to a minimum with the temporary replacement of supply using the Ito Corporation PA System.

Cogeneration using Natural Gas to supply both heat and power requires a backup – the PA Systemcan provide this and again uses no electricity.





PA System Brochure 2016

PA System for CHP – Gas Cogeneration

PA System Brochure 2013


How it works!

This world is full of variety and these diversities include gas. There are wide country differences in mix within LPG and also the blend of Natural Gas in use. The PA requires exact matching of both source and target gas to ensure correct, most efficient, safe and highest quality burning. Please complete the PA System Enquiry Sheet as fully as possible to enable us to carry out this match. Please email back to sales@ito-europe.com or fax to +44(0)1296 658615

Specification Sheets

PA-4 Data Sheet
PA-8 Data Sheet
PA-30 Data Sheet
PA-60 Data Sheet
PA-90 Data Sheet

Flow Chart(PA-4-12A)
Flow Chart(PA-8-12A)

Flow Chart(PA-30-12A)


There is no European Norme for this type of product we therefore contacted BSI Laboratories who designed a testing regime for the system based upon the individual products conforming to the appropriate EN Standards and also performance and safety testing of the whole system. This testing process has been carried out rigorously throughout this year (2012) and we now have full approval for it’s sale throughout Europe. The individual component regulators have also been certified to EN13785.

WLPGA GTC Innovation Award 

GTC Technical Paper Power Point Presentation
LPG Applied Technology for Seismic Hazard Technical Paper
Earthquake Detection protection recovery Oceania Summit Presentation



Flame Quality – Propane vs SNG in Natural Gas Appliance


Case Studies

PA4 – Hotel Vila Galé Porto

WLPGA Report – SNG, LPG – Air, Propane – Air
The LPG Opportunity

The World LPG Association recently undertook to produce a report on the opportunities afforded by Synthetic Natural Gas (SNG) Generators, the ITO Europe was asked to contribute and gladly offered the benefit of the Corporations knowledge. Download your copy here

Download Document



SNG/Propane Air Mixing Units for LPG: FAS-4000
 1  2  3
Propane Air Mixing Unit FAS-4000LP (Low Pressure) Propane Air Mixing Unit FAS-4000, Cascade execution Propane Air Mixing Unit FAS-4000 in combination with hot water vaporizer FAS-3000

The FAS-Propane-Air-Mixing Units FAS-4000 very often are also designated as „CNG-LPG-Mixer“ and serve for the production of SNG (Synthetic Natural Gas respectively Substitute Natural Gas). The main application purposes of these LPG-Air-Mixing Units are the standby supply in the natural gas grid (CNG), the compensation and managing of peak loads and peak periods, the temporary supply of SNG in case of larger repair works required in the natural gas grid or during installation until completion of new natural gas supply lines.
FAS-LPG-Air-Mixing-Units are available in following executions:

– Propane Air Mixing Unit FAS-4000LP (Low Pressure execution) in cabinet construction

– Propane Air Mixing Unit FAS-4000HP (High Pressure execution) in cabinet construction

– Propane Air Mixing Unit FAS-4000 as „cascade execution“ in cabinet construction

– Propane Air Mixing Unit FAS-4000 in combination with dry-type vaporizer FAS-2000, completely mounted in container

– Propane Air Mixing Unit FAS-4000 in combination with hot water vaporizer FAS-3000, completely mounted in container
als Containeranlage, komplett montiert im Container

– Special executions according to customer specification on request
Special executions according to customer specification on request

– Planning and design

– Project-related system control

– Complete installation and commissioning

– Service and maintenance


LPG/Air Mixers and Blenders

Overview of Alternate Energy Systems’ Mixers and Blenders

Download POM Blender Datasheet (PDF file)
Download Venturi Mixer Datasheet (PDF file)

Piston Operated Blender (POM-40)

Alternate Energy Systems, Inc. manufactures a complete line of LPG-air blending and mixing systems, ranging in capacities from 7MM BTU to over 500MM BTU per hour.

Our complete line of venturi mixers and piston operated blenders utilize the finest quality material and knowledge to meet the requirements of commercial, industrial, and natural gas utility customers around the world.



 The terms “mixer” and “blender” are used interchangeably on this page. Both describe a device which is used to mix two gases at preset or variable ratios. The majority of applications will be for simulating natural gas with a mixture of LPG vapor and air, so that the mixture becomes directly compatible and interchangeable with natural gas. Other applications include the “conditioning”, or “stabilization”, of natural gas, in order to produce gas with constant calorific properties, which is essential for many industrial processes.

There are several methods to mix air and LPG vapor, but probably the most simple is by using a venturi-type mixer, consisting of a venturi-tube and a venturi- nozzle. This method, as well as other methods, holds very accurate air-to-fuel ratios through a narrow range. This type mixer does not generally require compressed air for operation. The mixture of air/vapor is fed into a surge tank, where it is maintained at a set pressure, and then drawn from the surge tank for use. This type system is only recommended for intermittent periods of use and is simple to install, operate, and maintain.

For larger system capacities, or for higher system pressures, AES has developed, and received national and international patents for, a Piston Operated Mixer (POM). This mixer type utilizes very simple, yet extremely effective components, making this mixer probably the easiest to operate, most reliable, easiest to control, most stable mixer on the market today. It combines the advantages of “floating orifice” type mixers and “proportional blenders” in one compact unit.

Regardless of the type vaporizer and mixer, a standby system can be designed for the requirements of a small user, and equally well for the requirements of large industrial and utility users. It can also be equipped with a variety of options and accessories, including fully automatic gas properties control, integration into Plant Control and Monitoring Systems, and Remote Monitoring and Operation.

In times of uncertain oil prices and supplies, a standby system should be considered by all natural gas users. A simple analogy is that – we keep a spare tire for our automobile in the event of a flat – a standby system is a spare fuel supply in the event natural gas is interrupted or demand cannot be met.

For most users, however, standby systems for natural gas offer the opportunity to take advantage of steep discounts their gas utilities offer to customers who switch to an “interruptible rate”. To learn more about interruptible rates and how they can pay for a standby system in very short periods of time, and thereafter continuously contribute to “the bottom line” of business, call Alternate Energy Systems at +1 770 487 8596.


Click on the pictures to go to the page for that type mixer.

Venturi Type Mixer
for existing Vaporizers

Capacities from
7 MM BTU per hour to
250 MM BTU per hour


Piston Operated Mixer
POM-Series for existing Vaporizers

Capacities from
20 MM BTU per hour to over
2000 MM BTU per hour