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Surface Mix Burners Fuel Consumption Rates
Below is fuel consumption data for various Bethlehem burners and torches. In this comparison, all burners were set at the maximum flame setting yielding the hottest flame without distorting the “solid blue Bethlehem flame.”
Numbers are expressed in cubic feet per hour (cu. ft./hr.). All tests were done with propane gas regulated at approximately five pounds per square inch (psi). Oxygen was delivered from a compressed gas cylinder using a regulator set for approximately 20 psi.
Burner flames used for soft glass will not require as much heat as a flame to heat hard, borosilicate glass (boro). All Bethlehem burners can work with both soft and boro glass.
Burners attached to an oxygen generator may not perform as efficiently as burners using compressed gas. Oxygen generators may not be able to deliver the volume of oxygen needed for full flame settings (i.e., if your oxygen generator has a pressure delivery of less than 10 psi, it will not deliver the full cubic feet per hour needed for a full flame).
| Bethlehem
Model |
Gas cu. ft./hr. (l/hr)
|
Oxygen cu. ft./hr.
(l/hr) |
| PM2D-WC |
37 (1050) |
65 (1846) |
| Barracuda |
9 (239) |
42 (1192) |
| Betta |
5 (142) |
12 (341) |
| S.S.
Minnow |
6 (239) |
20 (566) |
| Piranha |
3 (80) |
10 (272.0) |
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