Barber Jet Specs

Barber Jets and Specifications

Barber Jets
Model Number Type Jet Overall Length Approx. Weight Thread Size †BTU/Hr Kcal/Hr ††Type Gas
in 1000′s in 1000′s
in. mm oz. gm in. mm Min Max
638 Impinged 1 3/8 35 3/4 21 5/16 x 27 8 2.5 6.5 ,625 1,625 City
2.5 6.5 ,625 1,625 LP
640 Impinged 1 1/2 38 7/8 25 5/16 x 28 8 5 10 1,25 2,5 City
5 10 1,25 2,5 LP
651 Slotted Cap 2 1/8 54 1 1/4 35 *7/16 x 24 11 2.5 5 ,625 1,25 City
2.5 3.5 ,625 ,875 LP
654 Slotted Cap 2 3/16 55.5 2 1/8 60 *7/16 x 24 11 2.5 7.5 ,625 1,875 City
2.5 7.5 ,625 1,875 LP
668-S Pilot 1 3/8 35 1 28 7/16 x 24 11 2.5 2.5 ,625 ,625 City
2.5 2.5 ,625 ,625 LP
642 Bell Baffle 1 3/8 47 1 28 *7/16 x 24 11 1 3 ,25 ,75 City
1 3 ,25 ,75 LP
‡ 674 Flat Flame 1 3/8 55.5 2 1/8 60 1/8″ N.P.T. 9,5 2.5 7.5 ,625 1,875 City
2.5 7.5 ,625 1,875 LP
‡ 670 Flat Flame 1 3/8 39 1 28 1/8″ N.P.T. 9,5 1.5 3.5 ,375 ,875 City
1.5 3.5 ,375 ,875 LP
671 Slotted Cap 1 3/8 39 1 28 1/8″ N.P.T. 9,5 1.5 3.5 ,375 ,875 City
1.5 3.5 ,375 ,875 LP

*Also available with 1/8″ N.P.T.

†Based on 3.5″ w.c. for City gases and 11″ w.c. gas pressure for LP gases.

††”City” gas is any gas with specific gravity of less than 1.0; LP gas is any gas with a specific gravity of more than 1.0 (Propane or Butane).

‡Flat flame jets have 1/8″ N.P.T. so they are gas tight without the hex bottoming. This allows turning of jets for exact positioning of flat flame.

Impinged Jet Burner Unit Specifications
Type Jet BTU/Hr. Per Jet Kcal/Hr. Per Jet FLAME HEIGHT BTU/Hr. Per Sq. Ft. of Combustion Area Kcal/Hr. Per Sq. Meter of Combustion Area BTU/Hr. Per Cu. Ft. of Combustion Area
From Jet Tips From Bottom of Burner
In Inches In mm In Inches In mm
638 2,500 625 4 102 6 152 108,000 288,500 300,000
638 5,000 1,250 8 203 10 254 216,000 580,000 300,000
640 7,500 1,875 12 305 14 356 324,000 870,000 300,000
640 10,000 2,500 16 406 18 457 432,000 1,160,000 300,000
Slotted Cap and Flat Flame Burner Unit Specifications
SLOTTED CAP and FLAT FLAME JET SPECS
Type Jet BTU/Hr. Per Jet Kcal/Hr. Per Jet FLAME DIMENSIONS
Total Height Total Width
In Inches In mm In Inches In mm
651 2,500 to 5,000 625 to 1,250 1 1/2 to 2 1/2 38 to 63 1 to 2 25 to 51
654 † 7,500 1,875 3 76 3 76