High Blast Mixers are compact air/gas mixers used in installations where high pressure air is available. These economical units are ideally suited to manual control operation for a wide range of heating applications where low pressure air is not available.
High Blast Mixers use small amounts of high pressure air (approximately 10%) to pickup incoming gas at the mixer.
Air at 20 to 100 psig is passed through a primary modified venturi which inspirates an equal amount of gas and elevates its pressure. The resultant mixture of one part air and one part gas is delivered to the main orifice at approximately 40% of the inlet air pressure.
The Hijector (the main venturi of the High Blast Mixer) efficiently entrains large quantities of combustion air and delivers the mixture to the burner system. The mixture produces a hard, sharp, clear blue, typical blast flame. The high pressure air valve and primary air shutter provide for wide ranges of adjustment.
Injector type design of high pressure stage prevents air feed back into the gas line. Capacities listed in the table are for 90% primary air and may be increased where adequate secondary is available. CAPACITY TABLE Catalog Number Min. Burner Area Sq. Inches Gas in 1000's BTU/hr. and Air in CFM Air Pressure, psig 20 406080100120 Average Mixture Pressure, Inches W.C. 2.5" 5" 7.5" 10" 12.5" 15" Gas Air Gas Air Gas Air Gas Air Gas Air Gas Air 6 HB 0.19 40 0.8 55 1.2 68 1.5 80 1.7 87 1.9 95 2.1 8 HB 0.30 65 1.8 90 2.4 110 3.0 125 3.4 140 3.8 156 4.2 10 HB 0.67 145 3.9 205 5.5 250 6.8 290 7.8 325 8.7 355 9.5 12 HB 1.06 230 5.3 320 7.3 395 9.0 450 10.4 500 11.5 555 12.6 16 HB 1.85 400 7.1 565 10.0 700 12.3 800 14.2 880 15.8 980 17.3 20 HB 2.49 550 9.8 770 13.8 950 17.0 1100 19.6 1220 21.8 1330 24.0 24 HB 3.25 680 12.3 960 17.3 1180 21.4 1360 24.6 1520 27.4 1660 30.0 32 HB 5.54 1200 20.5 1690 28.8 2080 35.6 2400 41.0 2680 45.5 2920 49.8
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