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型号 Type
零件名称
Accesory name
材 质 Materials
Q21F-64/C/P/R 内螺纹
Q21F-64/C/P/R 法兰
Q21F-64/C/P/R 焊接三段式( 对焊 , 承插焊 )
阀体 Body
WCB、45
CF8、304
CF8M、316
阀座 Seat
球 Ball
1Cr18Ni9Ti
0Cr18Ni9Ti
0Cr17Ni12Mo2
增强聚四氟乙烯、对位聚苯 RPTFE Counterpoint polyphenyl
阀杆 Stem
2Cr13
止推垫圈 Pressure disk
聚四氟乙烯 复合垫 PTFE Combined gasket
阀杆填料 Stem stuffing
V型聚四氟乙烯、石墨 V- shaped PTFE Graphite
螺栓 Bolt
35
304
六角螺母 Hex nut
弹簧垫圈 Spring washer
中碳 Clamp nut
压紧螺母 Spring washer
弹簧垫圈 Medium carbon
螺母 Nut
手柄 Wrench
手柄套 Wrench cover
塑 料 Plastics
锁紧装置 Lock instrument
适用工况 Applicable Operating Mode
适用介质 Applicable medium
水、蒸汽、油品等Water,vapor,and oil products,etc.
硝酸等腐蚀性介质 Corrosion medium such as Nitric acid.
醋酸等腐蚀性介质 Corrosion medium such as Acetic acid.
适用温度 Applicable temperature
-28~350℃
应用规范 Applicable specification
管螺纹标准 Pipe screw standard
DIN259/2999 GB7307-87 NPT BSPT
法兰标准 Flanged standard
JB79-59、SH3406、GB9113、HG20592-97
螺纹标准 Screw standard
GB196
主要外型及连接尺寸表Form of Main Types and Connecting Dimension
公称通径DN(mm)
G
D
d
d2
L
L1
H
W
Q11F
Q41F
Q21F
6
1 /4
30
8
-
60
85
15
56
110
1O
3/8
31
10
16
58
11O
1 /2
32
18
92
20
3 /4
38
13.5
12.5
135
67.3
106
90
62
65
25
1
45
17
24
73
109
100
68
70
11/4
53 4
22
126
120
75
150
145
40
11/2
63
26
97.5
136
83
50
2
71
32.8
46
112
154
140
98
177
21/2
170
95
180
190