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The basic design parameters
Nominal size: 50-2000 - mm DN, 1 ~ 78
Structure length: GB, ANSI B16.10. 12221-89
Nominal pressure: PN 1.0 ~ 6.4 MPa Class 150 ~ 300 lb
The connection form
A. the flange: JB/T 79-94. GB9112 ~ 9131 ~ 9131, HGJ 44 ~ 76-76, ANSIB 16.5
B, welding, GB, ANSI B16.25. 12224-89
Use the temperature: - 40 ~ 50 ~ 450 ℃, 300 ℃, -, - 101 ~ 600 ℃, - 101 ~ 800 ℃
The basic error: 2.5%
Back to the poor: 2% or less Dead zones: 0.8% or less
Applicable medium: water, gas, oil and corrosive medium
The major parts material list:
| Part name | The material | ||
| The valve body, disc plate | WCB | CF8 | CF8M、CF3M |
| The valve stem | 2Cr13 | CF8 | CF8M |
| The seat | metal/metal + flexible graphite | ||
| packing | Graphite packing/flexible graphite | ||
the power station Hard seal and electric butterfly valve
