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Gas Burners for Forges Furnaces and kilns phần 3

Propane duy trì một áp lực tương đối ổn định khi nó đang được sử dụng, quản lý giai đoạn duy nhất thực tế sử dụng với nó và ít tốn kém. Như tên gọi của nó ngụ ý, một điều hai giai đoạn có một buồng áp suất cao để trung gian riêng biệt với một giới hạn định trước rằng ôn hòa khí áp lực trước khi nó đạt đến buồng điều chỉnh. | Gas Burners 3 reducer onto the burner tube and mark its high areas while the trued-up end of the choke sleeve rests against it. Grind or file away any high spots while frequently reassembling the parts for comparison. Place the bell reducer on the sheet of sandpaper to finish flattening its face. Now use a z size drill bit to enlarge the threaded hole on the reducer s small end to hold the accelerator. Place a chair or five gallon bucket on the floor on which to sit clamp the locking pliers around the bell reducer just behind the large lip and place the reducer on the floor in front of you the locking pliers will be set at a slight angle . With one foot on the pliers and the drill bit resting on the reducer position the drill motor as near to vertical as you can while sitting leaning forward over your work. Rest your arms on your legs. Gently enlarge the existing hole. You will be able to feel the point where the drill bit penetrates the material s far side in time to stop before it drills into the floor. Having your body braced in this position will give you surprising control over the drill s aim and a good brace against kickback when the bit reaches the far side of the existing hole. Fig. 3-4 Note the edge of the drill bit is even with the lip s edge in the left side of the drawing. So the bit s tip will scratch a line at the proper place for center punching as is shown on the right side of the drawing Next punch-mark a place in the side of the lip on the reducer s small end for a setscrew. Use the 29 bit and the 8 X 32 tap to thread the hole. When you look at the drawing notice that the setscrew is placed off-center into the forward edge of the bell reducer s lip . This is done to insure enough room to keep the screw away from the lip s back edge. Also make sure the hole is placed far enough back from the forward edge so that the drill bit can run true. To do so place the 29 drill bit on the bell reducer so that the bit is just back from the lip s forward edge