Air-gas injection brazing torch type “DONMET” 297, hereinafter referred to as the brazing torch, is designed for conducting brazing operations and is mainly used for jewellery and dentoprosthetic works. The torch is also used for brazing with soft and coarse solders, their melting temperature not exceeding 700°C, heating, smelting and similar thermal processes.
The brazing torch basic parameters conform with ISO 9012:2011.
TECHNICAL SPECIFICATION
| Features | Propane-butane | Natural gas, methane |
| Gas fuel pressure with tip GVP №1, bar | 1,0 – 2,0 | 0,7 – 1,5 |
| Gas fuel pressure with tip GVP №2, bar | 1,0 – 2,0 | 0,7 – 1,5 |
| Gas fuel pressure with tip GVP №4, bar | 1,0 – 2,0 | 0,7 – 2,0 |
| Gas fuel consumption with tip GVP №1 | 0,016 – 0,024 kg/h | 0,012 – 0,017 m3/h |
| Gas fuel consumption with tip GVP №2 | 0,047 – 0,07kg/h | 0,04 – 0,05m3/h |
| Gas fuel consumption with tip GVP №4 | 0,25 – 0,38 kg/h | 0,2 – 0,27 m3/h |
| Rate of heat flow with tip GVP №1, kW | 0.2 – 0.3 | 0,12 – 0,16 |
| Rate of heat flow with tip GVP №2, kW | 0.56 – 0.9 | 0,36 – 0,5 |
| Rate of heat flow with tip GVP №4, kW | 3.0 – 4.7 | 1,9 – 2,6 |
| Hose inner diameter, mm | 6 | |
| Torch length with tip GVP №1, no more than, mm. | 260 | |
| Torch weight with tip GVP №1, no more than, kg | 0,150 | |
| Torch weight with a set of tips, no more than, kg | 0,31 | |
Note: One kilogram of liquid propane-butane mixture generates around 500l of gas during evaporation.
No precious metals are used in the product.
DELIVERY SET
| Item | Order № | Q-ty |
| «DONMET» 297 (tip GVP №1 (micro) | 297.000.00 | 1 |
| Tip GVP №2 (mini) | 297.200.00 | 1 |
| Tip GVP №3 (universal) | 234.600.00 | 1 |
| Label |
ADDITIONAL KITTING (as per customer’s order)
| Item | Order № | Note. |
| Tip GVP №1 | 297.100.00 | |
| Tip GVP №2 | 297.200.00 | |
| Tip GVP №3 | 297.400.00 | |
| Sealing ring 008-012-25 | 142.006.00 |
