Technical Specification
Fusible Plug is a fitting used in Steam Boilers to enhance the safety during operation. It’s working depends upon the water level in the Boiler shell. A fusible Plug is a threaded metallic cylindrical object, with a tapered hole in it which goes through its entire length.
| NOMINAL
Size |
A | B |
| 15mm(1/2’’) | 1/2 ‘’ BSPT | 56 |
| 20mm(3/4’’) | 3/4’’ BSPT | 56 |
| 25mm (1’’) | 1’’ BSPT | 70 |
| 32mm(1-1/4’’) | 1-1/4’’ BSPT | 83 |
| 40mm(1-1/2’’) | 1-1/2’’ BSPT | 89 |
| 50mm (2’’) | 2’’ BSPT | 100 |
| PART No | PART NAME | MATERIAL | SPECIFICATION |
| 1 | PLUG | BRONZE | IBR282(a) lV GR.B |
| 2 | FUSIBLE ALLOY | LEAD TIN ALLOY | IBR333 |
| 3 | CONE | BRONZE | IBR282(a) lV GR.B |
| 4 | BODY | BRONZE | IBR282(a) lV GR.B |
STEAM WORKING PRESSURE : 17.58 Kg/Cm2g (250psig)
HYDRAULIC TEST PRESSURE : 35.16 Kg/Cm2g (500psig)
