Bronze Fusible Plug
Boss Bronze Fusible Plugs are manufactured in two designs namely one piece and two piece designs. These are suitable for 250 PSIG (17.58 kg/cm2 ) Max. Boiler operating pressure and max. temp up to 428oF (220oC). Tested to 500 PSIG (35.15 kg/cm2g) Hydraulic pressure.
Type 1:One piece Design
This design has one piece Bronze body filled with fusible alloy having male BSPT threads. It is manufactured in 15mm (1/2") 20mm (3/4") and 25mm (1") sizes.
Type 2: Two Piece Design
This design has a replaceable cone containing fusible alloy screwed in to Bronze body, having male BSPT Threads. It is manufactured in 15mm (1/2"), 20mm (3/4"), 25mm (1"), 32mm (1 1/4"), 40mm (1 1/2") and 50mm (2) sizes.
Dimensions
Nominal Size |
A |
B |
A1 |
B1 |
---|---|---|---|---|
15 mm (1/2") |
53.0 |
15.0 |
32.0 |
8.0 |
20 mm (3/4") |
58.0 |
20.0 |
38.0 |
8.0 |
25 mm (1") |
70.0 |
20.0 |
45.0 |
9.5 |
32 mm (1 1/4") |
75.0 |
25.0 |
|
|
40 mm (1 1/2") |
82.0 |
30.0 |
|
|
50 mm (2") |
100.0 |
32.0 |
|
|
Materials
Bodies and covers are made of Bronze conforming to IBR 282 (a) (IV) Gr. B. Fusible is specially prepared to meet requirements of Indian Boiler Regulations.