Duo-Chek閥門早已成為低壓降、防反向流保護的代表。這些閥門是由鑄鐵、鑄鋼、不銹鋼和各種各樣的合金材料制成。 Duo-Chek止回閥可提供無固定器的結構設計，符合API594面間距尺寸，鋼制閥體，分對夾式和支耳式兩種結構，閥門內件有多種材料可選，包括金屬密封和彈性軟密封閥座。 該閥門較大尺寸為48”，壓力等級高達Class 4500。 Duo-Chek高性能止回閥 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。 可按您的要求提供閥門口徑、壓力等級和結構型式，以滿足應用中為苛刻的要求。 Duo-Chek? High Performance Non-Slam Check Valves Duo-Chek? valves have long been the standard for low-pressure drop flow reversal protection. These valves are made from cast iron, cast steel, stainless steel, and a broad variety of exotic materials. Duo-Chek offers retainerless designs to API 594 end-to-end dimensions in steel bodied wafer and lug style with a wide variety of trim materials including both metal and resilient seats. Valves come in sizes up to 88" and pressure ratings up to class 4500. 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. Our 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 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 Viton? is a registered trademark of DuPont Performance Elastomers L.L.C.