Marine Wafer Flange Butterfly Valve

What is wafer type butterfly valve?

Most wafer-style butterfly valves are engineered with four holes that align with the connected pipeline. The valve is designed to clamp between two flanges in your pipe work. Most wafer butterfly valves fit the majority of flange standards.

General

• Size: 28" and above.

• Pressure Rating: PN6-PN25

• General applications: Water. Oil. Gas.

Design

• Design & Manufacture: API 609 are basic, other norms could be used according to orders.

• F TO F dimensions: API 609, ASME B16.10,BS EN 558

• Connection: ASME B16.5, EN 1092, JIS 5K-20K. BW, RTJ are available.

• Safety design: anti-blow out stem.

General material

• BODY: CAST IRON, DUCTILE IRON

• DISC: ALUMINIUM BRONZE (C95400, C95500, C95800), STAINLESS STEEL(CF8,CF8M,CF3,CF3M,2205,2507),MONEL(K-400,K-500)

• STEM: 13CR, SS304, SS316, F51, F53, F55, 17-4PH, INCONEL 718, MONEL K-500

• SEAT: EPDM, NBR, BUNA-N, VITON

Test

• Inspection and approval norm: API598, API6D.

Quality control

• 100% Chemical analysis and mechanical test with raw materials of each heat numbers.

• 100% DPT test with the castings, partly MT or UT test, RT is always available if required.

• 100% hydraulic test with the shell and seal and low pressure air test.