Hijectors are designed to use high pressure gas (up to 35 psig) to entrain all the air needed to make a complete combustible mixture and to deliver it to the burners at the highest possible pressure.
Hijectors are designed along thoroughly proved lines but the external arrangement of the parts has been changed to permit incorporating a number of refinements. These refinements are of particular advantage to the installation and maintenance engineer. By reversing the usual operation of the air shutter and locating it on the body, the following advantages develop: Orifice spud may be removed easily without disconnecting pipingOverall length of unit is materially cut downOrifice and air entrainment space easily accessible for cleaning or inspectionAir entrainment noises reducedShutter cannot get lost even though backed entirely out of the wayA mounting boss with tapped holes simplifies mounting the Hijector solidly on a furnace or appliance.APPLICATIONTo secure the best all around operation when using high pressure gas, it is necessary that the relation between burner area and orifice area be correct and that the right sized Hijector be used. Also, piping between Hijector and burners should be large enough and straight enough to prevent undue loss of mixture pressure.
Where high pressure gas is available, Hijectors eliminate the requirement of air blowers or pressure air for combustion jobs, and are simple to install, inexpensive to use and easy to operate.
They are supplied in sizes 1'' to 4''.
HIJECTOR CAPACITY TABLE - NATURAL GAS AND PROPANE Kind of Gas Average BTU Natural Gas 950 - 1200 Propane 2500 BURNER AREA DATA Specific Gravity 0.65 1.52 Air/Gas Ratio 10/1 24/1 Gas Pressure 25 psig 25 psig Mixture Pressure 1.8" W.C. 0.8" W.C. Gas Capacity CFH Catalog Number Approx. Burner Area * Sq. In. Catalog Number Approx. Burner Area * Sq. In. 10 6H-78 0.050 6H-76 0.202 * Burner areas shown in capacity tables are based on discharge coefficient of 100%. These areas should be multiplied by one of the following factors according to the type of burner used with the Hijector. Flame Retaining or Piloted Burners and Blast Tips. Also Pepper Box type tunnel burners. Factor = 1.3 Annular or single port type, round or flat nose tunnel burners. Factor = 1.3 Venturi type steel tunnel burners. Factor = 0.8 15 6H-76 0.080 6H-73 0.293 20 6H-74 0.103 8H-70 0.404 30 6H-70 0.159 8H-66 0.560 40 6H-68 0.195 10H-61 0.780 50 8H-64 0.262 12H-57 0.943 60 8H-61 0.308 12H-3/64 1.130 70 8H-59 0.338 16H-55 1.380 80 10H-57 0.372 16H-54 1.550 90 10H-3/64 0.443 16H-53 1.810 100 10H-55 0.543 16H-1/16 2.000 120 10H-54 0.610 20H-51 2.290 140 12H-53 0.712 20H-50 2.500 160 12H-52 0.813 20H-5/64 3.120 180 12H-51 0.905 24H-45 3.440 200 16H-50 0.986 24H-44 3.780 220 16H-49 1.080 24H-43 4.050 240 16H-5/64 1.230 32H-41 4.710 260 16H-46 1.320 32H-39 5.060 280 16H-45 1.350 32H-38 5.260 300 20H-44 1.490 32H-36 5.790 320 20H-43 1.590 32H-35 6.170 340 20H-42 1.760 32H-33 6.510 360 20H-41 1.860 32H-32 6.880 380 20H-40 1.930 32H-31 7.350 400 20H-39 2.000 450 24H-36 2.280 500 24H-34 2.480 550 24H-32 2.710 600 24H-31 2.900 650 32H-1/8 3.150 700 32H-30 3.320 750 32H-29 3.720 800 32H-9/64 3.980 850 32H-27 4.170 900 32H-25 4.500 950 32H-23 4.770 1000 32H-22 4.970 1050 32H-20 5.220 HIJECTOR CAPACITY MULTIPLIER TABLE Gas Pressure Listed For pressures other than listed 5# 10# 15# 20# 25# 30# 35# 40# 10# 0.709 1.000 1.220 1.410 1.58 1.73 1.87 2.00 15# 0.578 0.815 1.000 1.150 1.29 1.41 1.53 1.63 25# 0.447 0.631 0.775 0.895 1.00 1.09 1.18 1.26
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