Duo-Chek高性能無撞擊止回閥是源自上世紀五十年代末期在市場上推出的Mission對夾式止回閥?？砂茨囊筇峁╅y門口徑、壓力等級和結(jié)構(gòu)型式，以滿足應用中zui為苛刻的要求。我們的產(chǎn)品范圍包括，但并不限于此：
 

• 閥門口徑：2” 至 88”。
• ASME壓力等級Class 125至Class 2500。
• API6A和6D壓力等級。
• 亦可供DIN、JIS、BS、AS和ISO標準。
• 對夾、支耳、法蘭連接方式以及加長閥體型式。
• 可提供有固定器和無固定器兩種閥體結(jié)構(gòu)。
• 閥體材料：鑄鐵、碳鋼、不銹鋼、雙相不銹鋼、超級雙相不銹鋼
• 彈性閥座材料：乙丙橡膠、橡膠、氯丁橡膠、硅橡膠和Viton-B®氟橡膠。
• 亦可供整體式和堆焊式金屬閥座。
• 連接型式：突面、平面、環(huán)連面、焊接、卡箍。

Duo-Chek®
high performance non-slam check valves are the original Mission Manufacturing Company wafer check valves 
introduced to the market in the late 50's. The valve is available in the sizes, pressure classes and configurations required
to meet the most demanding of applications. Product range includes, but is not limited to: 
• Sizes: 2" to 88"
• ASME Pressure Class 125 through 2500
• API 6A and 6D pressure classes 
• DIN, JIS, BS, AS, and ISO standards are also available
• Wafer, lug, double flanged and extended body styles
• Wafer configurations available in retainered 
and retainerless style
•  Body Materials:
Cast Iron, Carbon Steel, Stainless Steels, 
Duplex Stainless Steel, Super Duplex
•  Resilient Seat Materials:
EPDM, Buna-N, Neoprene, and Viton-B®
•  Integral and overlaid metal seats also available
•  End Connections:
Raised Face, Plain Face, Ring Joint, 
Weld-End, Hub-End