Malleable iron valve material selection

For nominal pressure PN ≤ 2.5MPa, working temperature of -30 ~ 300 ℃ of water, steam, air and oil products such as media malleable iron valves, the main parts of the selection of materials in the following table:
Parts name material
No. Name Brand standards
Valve body, valve cover, hoist pieces of malleable iron KTH300-06, KTH330-08, KTH350-10 GB / T 9440-1998
Stem, chromium stainless steel shaft 1Cr13, 2Cr13, 3Cr13 GB / T 1220-1992
Aluminum-bronze QA19-2, QA19-4 GB / T 4423-1992
Manganese brass HMn58-2 GB / T 4423-1992
Sleeve cast manganese brass ZCuZn38Mn2Pb2 GB / T 1176-1987
Aluminum Bronze ZCuA19Mn2, ZCuA19Fe4Ni4Mn2
Carbon steel rocker WCA, WCB, WCC GB / T 12229-1989
High-quality carbon steel 20,25,35 GB / T 699-1999
Chrome stainless steel cylinder 1Cr13, 2Cr13 GB / T 1220-1992
Aluminum Pistons brass ZCuZn25A16Fe3Mn3 GB / T 1176-1987
Chrome stainless steel 2Cr13, 3Cr13 GB / T 1220-1992
Tin brass patch QSn6.5-0.1 GB / T 14956-1993
Beryllium Bronze QBe2 GB / T 14596-1993
Austenitic stainless steel 1Cr18Ni9, 1Cr18Ni9Ti GB / T 4237-1992
Spring Spring Steel 50CrVA GB / T 1222-1992
60Si2Mn, 60Si2MnA
Austenitic stainless steel float 1Cr18Ni9, 1Cr18Ni9Ti GB / T 4237
0Cr18Ni9Ti, 1Cr17Ni13Mo2Ti
Filters 1Cr18Ni9, 1Cr18Ni9Ti
Valve seat, the sealing surface sluicegate pieces Aluminum brass ZCuZn25A16Fe3Mn3 GB / T 1176-1987
Manganese cast brass ZCuZn38Mn2Pb2
Aluminum Bronze ZCuA19Mn2, ZCuA19Fe4Ni4Mn2
Stainless steel 1Cr13, 2Cr13, 1Cr18Ni9, 1Cr18Ni9Ti GB / T 1220-1992
Polytetrafluoroethylene SFB-1, SFB-2, SFB-3 HG2-534
SFBN-1, SFBN-2, SFBN-3 HG2-535
Rubber - --
Aluminum bronze stem nut ZQA19-2, ZQA19-4 GB / T 1176-1987
Manganese cast brass ZCuZn38Mn2Pb2
Aluminum brass ZCuZn25A16Fe3Mn3
PTFE packing SFT-1, SFT-2, SFT-3, SFT-4 HG2-538
Inhibition of asbestos - --
Rubber - --
Baptist Polytetrafluoroethylene asbestos rope - --
Flexible Graphite - --
Malleable iron hand wheel KTH330-08, KTH350-10 GB / T 9440-1988
Ductile Iron QT400-15, QT450-10 GB / T 12227-1989