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蝶形双瓣止回阀
check valve is applied to purify pipeline and water supply and drainage pipelines of industry, loop, water treatment and high-rise buildings to prevent medium from flowing reversely. The check valve is wafer type, and the butterfly plate is two semicircles and adopts spring compulsory resetting. The sealing surface can be made of overlaid wear-proof materials or lined with rubber. Therefore the valve is compact and reliable and can be widely applied.
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公称通径DN(mm)
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40～600
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公称压力PN(MPa)
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1.0～1.6
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公称压力Ps(MPa)
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强度试验
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1.5～2.4
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密封试验
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1.1～1.76
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主要 零件
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阀体
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HT200、QT450、WCB、CF8、CF8M、CF3M
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阀板
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球铁镀镍、球铁镀尼龙、CF8、CF8M、CF3M等
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弹簧
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201、304、INCONEL X-750等
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阀轴
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416、304、2507等
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密封圈
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EPDM
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连接形式
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对夹式
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规格
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连接尺寸
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|||
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ΦD1
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ΦD2
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R
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(GB/T12221-1989)L
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DN50
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60
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107
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52
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43
|
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DN65
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73
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127
|
63
|
46
|
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DN80
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89
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142
|
78
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64
|
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DN100
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114
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162
|
102
|
64
|
|
DN125
|
141
|
192
|
127
|
70
|
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DN150
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168
|
218
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154
|
76
|
|
DN200
|
219
|
272
|
202
|
89
|
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DN250
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273
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327
|
254
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114
|
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DN300
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324
|
377
|
303
|
114
|
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DN350
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356
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440
|
318
|
127
|
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DN400
|
406
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491
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381
|
140
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DN450
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457
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541
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429
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152
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DN500
|
508
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596
|
478
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152
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DN600
|
610
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698
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575
|
178
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蝶形双瓣止回阀
check valve is applied to purify pipeline and water supply and drainage pipelines of industry, loop, water treatment and high-rise buildings to prevent medium from flowing reversely. The check valve is wafer type, and the butterfly plate is two semicircle
