| 規 格：DN20-500 |
型 號：YFWA48 |
數 量：1200 |
| 品 牌：永一 |
包 裝：木箱 |
價 格：面議 |
YFWA48系列高溫蒸汽安全閥永一美標安全閥
用途:適用于動力鍋爐、裂解爐、直流鍋爐、再熱器及其他設備管道作超
壓保護(Application:YFA48SH is serviced for
overpres sure protection of power boiler,decomposition boiler,once-through
boiler,reheater and other pressure vessel and pipe)。
●性能:符合ASME《鍋爐和壓力容器規范》第1卷動力鍋爐要求(Perfor
mance: YFSH meets
the requirements of YFA48SH Boiler and pressure Vessel Code,Section I，power Boilers)。
●特點:o 采用背壓套來調節回座壓力，以達到極小的啟閉壓差(Features
Adjusting back
Seat pressure with back pressure Jacket,to arrive minimum Blowdown)。
0 高性能高溫材料作彈性閥材料，以保證高溫下的密封性(High
performance and
temperature material are used for valve to ensure its tightness in high
temperature)。
o密封付表面堆焊鈷基硬質合金，以防護高溫蒸汽的氣蝕(Tightn-
ess body is faced
with stellite,to prevent from eroding of high temperature gas)。
o一定的熱態測試，使安全閥更接近工況條件(Tested under hot position and make the safety
valve approach to service condition)。
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