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Duo-Chek® II
高性能止回阀

High Performance
Check Valves
800系列衬里对夹式止回阀
Series 800 Lined Wafer Check Valves

美国克雷恩阀门公司
  • 通径:从DN50至DN600
    Sizes from 2" to 24"
  • 完全合成橡胶衬里
    Fully elastomer lined
  • 从25 psi到150 psi的紧密性关闭(如果需要,可提供更低的最小压力)
    Tight shutoff from 25 psi to 150 psi (lower minimum pressure available on request)
  • 双弹簧均匀分布负载力,反应更加迅速
    Dual springs distribute load force evenly for quicker response
  • 兼容ASME B16.1压力等级Class 125和B16.5压力等级150法兰
    Compatible with ASME B16.1 Class 125 and B16.5 Class 150 flanges
 

  典型市场包括:
  Typical markets include:

  • 暖通空调
    HVAC
  • 化工和石化
    Chemical and Petrochemical
  • 食品和饮料
    Food and Beverage
  • 电力和公共设施
    Power and Utilities
  • 纸浆和造纸
    Pulp and Paper
     

(1) 全衬里球墨铸铁阀体:
  完全保持额定压力。合成橡胶衬里能够防止流体介质接触阀体。
(1) Fully-Lined Ductile Iron Valve Body:
  Maintains full rated pressure. Elastomer lining prevents flow media from contacting the body.

(2) 阀门衬里:
  可提供几种合成橡胶材料,满足大多数腐蚀性应用需求
(2) Valve Liner:
  Available in several elastomer compounds to meet most corrosive application demands

通径
Size
流量
系数
Cv
弹簧开启
*压力*
(英寸水柱)
Cracking
*Pressure*
(in. of
water)
英寸
in
毫米
mm
2 50 36 10
21/2 65 62 12
3 80 123 7
4 100 281 6
5 125 522 10
6 150 1,033 8
8 200 2,158 9
10 250 3,368 13
12 300 5,068 10
14 350 6,465 12
16 400 9,172 12
18 450 12,853 10
20 500 17,398 16
24 600 28,794 15
*水平流向。数值为近似值。
*Horizontal flow. Values are approximate.

(3) 阀瓣行程止动装置:
  材质与阀门(DN50 - DN300)衬里相同,或316不锈钢(DN350 - DN600)。
(3) Plate Travel Stop:
  Made of the same material as the valve liner (2" - 12") or 316 Stainless Steel (14" - 24").

(4) 两组耐腐蚀弹簧:
  启动止回阀阀瓣,将负载均匀分布到每个阀瓣上,确保迅速安全的反应。
(4) Dual Corrosion-Resistant Springs:
  Activate the check valve plates and distribute the load force evenly across each plate, ensuring quick sure response.

(5) 衬里面:
  不需要法兰垫圈。
(5) Liner Face:
  Negates the need for flange gaskets.

衬里温度等级
Liner Temperature Ratings
材料
Material
温度等级(oF)
Temperature Ratings (oF)
丁纳橡胶(标准配置)
Buna-N (Standard)
+10 to +180
三元乙丙橡胶(标准配置)
EPDM (Standard)
–30 to +275
氯丁橡胶
Neoprene
+20 to +200
氟化橡胶
Viton
+10 to +400
海帕伦(氯磺化聚乙烯合成橡胶)
Hypalon
0 to +275
  一些流体介质可能会进一步限制所公布的温度范围,并且明显地缩短阀座的使用寿命。咨询工厂了解更多的信息。
  Some flow media may further restrict the published temperature limits and/or significantly reduce seat life. Consul factory for additional information.
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