| 摘要 |
Two bypasses (32, 33) are formed in the valve box (21) of a main valve (18) provided in the piping (13) of the exhaust system (12) of a heat treatment furnace (1). Each bypath (32, 33) is opened/closed by an auxiliary valve (30, 31) fixed to the valve box (21). One auxiliary valve (31) is arranged as a flow regulating valve. The main valve (18) is secured to the housing (14) of a heat treatment system by means of bolts and nuts using a securing plate (54) provided in the main valve (18). Piping section of the exhaust system can be simplified and efficiency of the maintenance work of the heat treatment system is enhanced.
|
