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GB/T 586-2015 marine flange cast steel check valve
Product Details
GB/T 586 Basic parameters of marine flange cast steel check valve：
| Type | Nominal pressure /PN | design pressure/MPa | Nominal diameterDN/mm | Applicable media | ||||||
| A B | 10 | 1 | 65～125 | Fresh water, lubricating oil, fuel oil and steam with a temperature not exceeding 300℃ | ||||||
| 25 | 2.5 | 20～100 | ||||||||
| AS BS | 16 | 1.6 | 65～125 | |||||||
| 25 | 2.5 | 20～100 | ||||||||
Main parts materials：
| Part Name | Material | |||||||||
| name | Trademark | standard encdoing | ||||||||
| valve body | valve body | cast steel | ZG275-485 | GB/T 12229-2005 | ||||||
| Valve body sealing surface | Hardfacing stainless steel | E347 | GB/T 983-1995 | |||||||
| cap | cast steel | ZG275-485 | GB/T 12229-2005 | |||||||
| valve disc | valve disc | High quality carbon structural steel | 20 | GB/T 699-1999 | ||||||
| Valve disc sealing surface | Hardfacing stainless steel | E410 | GB/T 983-1995 | |||||||
| bushing | Stainless steel | 20Cr13 | GB/T 1220-2007 | |||||||
Basic dimensions of type A and type B check valves：
| Nominal pressure/PN | Nominal diameter DN/mm | structure size | wall thickness /t | flange | bolt | Lift/m | theoretical weight/kg | |||||||||||||
| L | H≈ | H1 | ||||||||||||||||||
| A | B | A | B | B | D | D1 | D2 | d0 | b | n | Th. | A | B | |||||||
| 10 | 65 | 290 | 115 | 124 | 91 | 115 | 6 | 155 | 123 | 104 | 15 | 14 | 6 | M14 | 19 | 12.5 | 10.6 | |||
| 80 | 310 | 125 | 151 | 110 | 125 | 7 | 170 | 138 | 118 | 8 | 23 | 15.6 | 14.4 | |||||||
| 100 | 350 | 150 | 165 | 116 | 135 | 8 | 190 | 158 | 138 | 28 | 24.5 | 19.9 | ||||||||
| 125 | 400 | 175 | 184 | 124 | 155 | 215 | 183 | 164 | 10 | 35 | 31.9 | 27.5 | ||||||||
| 25 | 20 | 150 | 75 | 84 | 70 | 75 | 6 | 95 | 68 | 48 | 13 | 11 | 4 | M12 | 7 | 3.3 | 3.2 | |||
| 25 | 160 | 80 | 80 | 105 | 73 | 56 | 12 | 3.9 | 3.8 | |||||||||||
| 32 | 180 | 85 | 90 | 70 | 85 | 115 | 83 | 64 | 15 | 13 | 6 | M14 | 9 | 5.8 | 5.1 | |||||
| 40 | 200 | 90 | 99 | 75 | 90 | 7 | 125 | 93 | 74 | 12 | 7.1 | 6.3 | ||||||||
| 50 | 230 | 95 | 110 | 81 | 95 | 135 | 103 | 84 | 15 | 8.8 | 8.5 | |||||||||
| 65 | 290 | 115 | 128 | 94 | 115 | 170 | 132 | 110 | 17 | 15 | 8 | M16 | 19 | 13.5 | 11.5 | |||||
| 80 | 310 | 125 | 156 | 115 | 125 | 185 | 147 | 126 | 16 | 23 | 18.0 | 16.9 | ||||||||
| 100 | 350 | 150 | 168 | 119 | 135 | 8 | 205 | 167 | 146 | 10 | 28 | 26.3 | 22.7 | |||||||
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