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Classification：Relief pressure valve
Trade names：
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| The whorl connects the guide piston type steam relief pressure valve in Y13H type |
| Type of the products: Y13H |
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Structure characteristic and use :
This serial relief pressure valves are guide piston type relief pressure valves . And lead the valve by the main valve two parts make up . The main valve is made up of such parts as valve seat , main valve one , piston , jar set , spring ,etc. mainly. Lead the valve and make up by such parts as valve seat , valve one , diaphragm , spring , regulating the spring ,etc. mainly. Establish the pressure of exporting through regulating the spring pressure, utilize sensing of the diaphragm to export the pressure change, through lead valve is it urge piston regulate main valve reduce expenditure position is it shed the size of the area to pass to open and close, realize the depression steady voltage function.
This product is used in the steam pipework mainly , play and reduce pressure on steady voltage function . |
Main technical parameter and performance index :
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Nominal pressure (Mpa)
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1.6
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2.5
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Test pressure of the shell (Mpa ) is *
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2.4
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3.75
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Sealed test pressure (Mpa)
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1.6
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2.5
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Supreme inlet pressure (Mpa)
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1.6
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2.5
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Export to the pressure range (Mpa)
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0.1-1.0
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0.1-1.6
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Characteristic deviation of the pressure (Mpa) P2P
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GB12246-1989
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Characteristic deviation of the flow (Mpa) P2G
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GB12246-1989
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Press difference minimumly
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0.15
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0.15
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Seepage amount
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GB12245-1989
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*: The shell is tested not including the diaphragm , valve are covered. |
Major part material :
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Part name
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Part material
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The valve has body The valve covering The bottom covering
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WCB
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Valve seat Valve plate
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2Cr13
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Jar set
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2Cr13/25 (plate the hard chromium)
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Piston
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2Cr13 / copper alloy
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Piston-ring
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Alloy casting iron
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Lead the valve seat Lead the valve stem
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2Cr13
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Diaphragm
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1Cr18Ni9Ti
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Main valve spring
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50CrVA
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Lead the main spring of valve
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50CrVA
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Regulate the spring
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60Si2Mn
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Flow coefficient (Cv ):
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DN
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15
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20
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25
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32
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40
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50
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Cv
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1
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2.5
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4
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6.5
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9
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16
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Connect size:
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Nominal open DN directly
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G
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L
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H
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Hl
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15
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1/2"
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140
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295
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90
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20
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3-4"
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140
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330
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98
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25
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1"
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160
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330
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110
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32
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1-1/4"
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180
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330
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110
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40
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1-1/4"
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200
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345
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125
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50
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2"
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230
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345
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125
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