Injectors and Proportional Mixers
More commonly known as venturi mixers, injectors use the gas flow through the orifice to entrain the air required for combustion. They can be used with low or high pressure natural gas or propane. Because propane requires 2.5 times the amount of air that natural gas requires to burn completely and efficiently, the propane mixers feature an additional sleeve, which aids in the entrainment of air. We commonly use injectors on garages and pipe warmers.
Proportional mixers are commonly used for glory holes, but can also be used for furnaces and garages when available gas pressure is too low for other burners. They will efficiently mix any commercially available fuel gas from 4“w.c. to 1 psi with air from 4“w.c. to 4 psi. When used with a zero governor, the volume of the air/gas mixture is regulated by a butterfly valve and the ratio of air to gas is maintained throughout the firing range.
Please contact us for information on other sizes or for use with other gases.
| Atmospheric Injectors | ### | ### | ### | ### | ### |
| Model # | Max BTU/hr | Gas Type | Mix Pressure | Outlet NPT | Equipment |
| T-4 | 25,000 | Natural | < 1 PSI | 1" | PW20 |
| T-5 | 40,000 | Natural | < 1 PSI | 1 1/4" | PW29 |
| T-40 | 27,000 | Propane | < 1 PSI | 1" | PW20 |
| T-50 | 45,000 | Propane | < 1 PSI | 1 1/4" | PW29 |
| TR-6 | 55,000 | Natural | < 1 PSI | 1 1/2" | GA1 |
| TR-60 | 62,000 | Propane | < 1 PSI | 1 1/2" | GA1 |
| TR-8 | 90,000 | Natural | < 1 PSI | 2" | GA2 |
| TR-80 | 100,000 | Propane | < 1 PSI | 2" | GA2 |
| H-40 | 25,000 | Propane | > 1 PSI | 1" | PW20 |
| H-50 | 62,000 | Propane | > 1 | 1 1/4" | GA1 |
| Proportional Mixers | ### | ### | ### | ||
| Model # | Gas Inlet | Air Inlet | Mixture Out | ||
| 64-LP | 1" NPT | 1 1/2" NPT | 1 1/2 NPT | ||
| 84-LP | 2" NPT | 2" NPT | 2" NPT |
