Steam extraction check valve (H664Y) is installed on turbine extraction lines to prevent reverse flow of steam or water. It protects turbine from following accidents by quick and tight closure within 0.5 second.
Standard: ASME/ANSIB16.34
Connection: butt weld or flange
Pressure: PN16~PN420
Size: DN80~1000
1、WCB
2、ZG20CrMo、ZG15Cr1Mo1V
3、ASTM A216 WCB
4、ASTM A217 WC6、ASTM A217 WC9
Temperature:
1、WCB:-29℃~425℃
2、Alloy steel:-29℃-540℃、-29℃-570℃
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