Metal Hard Sealing Butterfly Valve
- Brand: feiqiu
- Standards: API 609, MSS SP-68
- Class: Class 150, 300
- Size: 2"-80"
- Material: WCB, LCB,CF8, CF8M, CF3, CF3M
- Medium: Water, waste water etc
Wafer Type Hard Sealing Butterfly Valve
1. Purpose and characteristic
This kind of butterfly valve is suitable for high temperature, high pressure, fireproof, jacket etc.pipe as start and stop or adjust medium, the main char-acteristic as below:
1) Compact configuration,tiny bulk, light and operate skillfully and conveniently.
2) It adopt three-dimensional eccentric elasticity or multiple layers hard sealing configuration,the hermetical capability can reach to zero leakage.
3) This kind of valve with no flange, which makes pipe eleg-antly and binding up conveniently.
4) It has characteristic of high temperature resistant high pressure resistant, antisepsis, wearable etc.
2. Drive type
Worm wheel drive,pneumatic drive,electric drive.
3. Adoption standard
Jointing dimension:GB1224;ANSI B16.25; DIN2559
Structure length:GB/T12221-1989;API609, EN593, MSS SP-68
Pressure test:GB/T13927-1992;API598
4. Main technology parameter
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Nominal diameter
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DN(mm)
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50-2000
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Nominal pressure
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PN?MPa?
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0.6
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1.0
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1.6
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2.5
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4.0
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Ps(MPa)Test pressure
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Shell test
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0.9
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1.5
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2.4
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3.75
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6.0
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Seal test
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0.66
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1.1
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1.76
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2.75
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4.4
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Gas seal test
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0.6
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0.6
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0.6
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0.6
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0.6
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Appropriate medium
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Water,steam,oil,acid corrosive and so on
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Appropriate temperatuer
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Carben steel:-29 to 425, Stainless steel:-40 to 600
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5. Material for main parts
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Parts name
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Material
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Body
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Cast steel,stainless steel,Cr.Mo.Steel and ad hoc material
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Disc
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Cast steel,Alloy steel,stainless steel,Cr.Mo.Steel and ad hoc material
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Seal ring
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Stainless steel, resist grind material
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Stem
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Stainless steel,Cr.Mo.Steel
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Packing
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Flexible graphite
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