Standard Double Offset Butterfly Valve Rubber Seated

PHOTOS SHOWS SPECIFICATIONS AS BELOW
SIZE: 48″
RATING: 150LB
BODY: ASTM A536 DUCTILE IRON+304SS BODY SEAT
DISC: ASTM A536 DUCTILE IRON
STEM: SS416
SEAT: EPDM
ACTUATION: GEAR UNIT

GENERAL DESIGNED SPECIFICATIONS

Size: 4″~144″.
Pressure Rating: 150LB,PN6,PN10,PN16,PN20,JIS 5K, JIS 10K, JIS 16K, JIS 20K.
General applications: Water. Oil. Gas.
Design & Manufacture: API 609, BS5155, EN593 are basic, ASME B16.34 ,other norms could be used according to orders.
F TO F dimensions: API 609, ASME B16.10,BS EN 558， BS 5155
Connection: ASME B16.5, EN 1092, BS 4504, ASME B16.47 ,JIS 5K-20K.
Safety design: anti-blow out stem.

TYPICAL MATERIAL LIST

BODY: ASTM A 126, ASTM A 395, ASTM A536 65-45-12, ASTM A351 CF8 CF8M CF3 CF3M , 4A ,5A, C95400, C95800, B62, B148 ASTM A216 WCB/WCC, ASTM A217 WC6/WC9/C5/C12/C12A/CA15, ASTM A352 LCB/LCC, A351 CF8/CF8M/CF3/CF3M, A995 4A/5A, C83600/C95400/C95800, MONEL K400/K500, H-276, INCONEL 625/718

DISC: ASTM A 126, ASTM A 395, ASTM A536 65-45-12, ASTM A351 CF8 CF8M CF3 CF3M , 4A ,5A, C95400, C95800, B62, B148 ASTM A216 WCB/WCC, ASTM A217 WC6/WC9/C5/C12/C12A/CA15, ASTM A352 LCB/LCC, A351 CF8/CF8M/CF3/CF3M, A995 4A/5A, C83600/C95400/C95800, MONEL K400/K500, H-276, INCONEL 625/718

STEM: A182 F6A, F304, F304L, F316, F316L, F51, F53,17-4PH, XM-19, C95400, C95800, C83600, INCONEL 625, INCONEL 718, MONEL K400, MONEL K500, H-276

SEAT: STAINLESS STEEL HARD FACED OR INTEGRAL BODY SEAT

SEAL: EPDM, NBR, VITON

OPERATOR: GEAR UNIT

OTHER SPECIAL MATERIALS ARE AVAILABLE TO CUSTOMIZE.

TEST AND INSPECTION

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.

GUATANTEE

SAVVY VALVES provide 12 months service life at least, free spares and maintenance instruction will be provided when required.

HOT SALE PRODUCTS

For over 10 years, we have been a leading supplier of industrial valves for major global projects in water supply, oil & gas, and desalination.

What Is The Function Of A Standard Double Offset Butterfly Valve Rubber Seated?

The standard double offset butterfly valve rubber seated is designed to provide tight shut-off with reduced seat wear, making it ideal for industrial systems that require reliable flow control and frequent operation. The “double offset” refers to the disc being offset from the valve centerline in two directions, which minimizes contact between the disc and the seat during opening and closing. This design significantly extends the valve's service life and reduces operating torque. The rubber seat ensures bubble-tight sealing, making it suitable for water, air, and non-corrosive fluid applications. Commonly used in water treatment plants, power generation, and district heating systems, this valve offers a good balance of durability, sealing performance, and ease of operation. Its quarter-turn function allows quick shutoff, and the design supports both manual and automated actuation. This valve is especially preferred in systems where low maintenance and high reliability are key requirements.

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