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主要性能規(guī)范 Chief property and specification
試驗(yàn)壓力 Test pressure
| 公稱壓力 PN/MPa Nominal pressure |
試驗(yàn)壓力/MPa Seal test | ||
| 殼體強(qiáng)度試驗(yàn) Shell strength |
上密封試驗(yàn) Back seal test |
密封試驗(yàn) Seat test |
|
| 1.0 | 1.5 | 1.1 | 1.1 |
| 1.6 | 2.4 | 1.8 | 1.8 |
| 2.5 | 3.8 | 2.8 | 2.8 |
| 4.0 | 6.O | 4.4 | 4.4 |
| 6.4 | 8.6 | 7.O | 7.0 |
| 1O.O | 15.O | 11.O | 11.O |
使用范圍 Applicable
| 產(chǎn)品類型 Product type |
適用介質(zhì) Applicable medium |
適用溫度/℃ Applicable temperature |
| NKZ41H NKZ44H NKZ944H-C型 NKZ941H |
水、蒸汽、空氣 Water，Steam，Air |
≤425 |
| NKZ41H(Y) NKZ44H(Y)-I型 NKZ944H(Y)-I型 NKZ941H(Y) |
水、蒸汽、空氣 Water，Steam，Air |
≤550 |
主要零件材料 Materials for main parts
| 零件名稱 Part name |
閥體、閥蓋 Body Bonnet |
閥桿 Stem |
閘板 Wedge gate |
密封面 Sealing face |
閥桿螺母 Yokenut |
填料 Parking |
緊固件 Fastener |
| NKZ44H NKZ41H-C型 NKZ944H-C型 NKZ941H |
WCB | 2Crl3 | 25 | H：合金鋼 H：alloy steel |
鋁青銅 Albronze |
膨脹復(fù)合石墨 Expanding comDound graphite |
優(yōu)質(zhì)碳鋼 High-grade carbon steel |
| NKZ44 NKZ41Y-I型 NKZ944-I型 NKZ941 |
鉻鉬鋼 Cr.Mo steel |
20CrlMo1VA 38CrMoAlA |
鉻鉬鋼 Cr.Mo steel |
Y：硬質(zhì)合金 Y：carbide alloy |
鉻鉬鋼 Cr.Mo steel |