◆ In response to the needs of different working conditions, we have developed a quintuple eccentric metal to metal bi-direction butterfly valve on the basis of triple eccentricity.

◆ The first one is eccentric; the center of the true circle is eccentric, and every tangent of the sealing ring perpendicular to the centerline of the channel is a true circle, and the center of each facet is eccentric to the centerline of the channel.

◆ The second one is eccentric; the shaft is eccentric, the sealing surface is placed on the side of the valve stem, and the sealing surface is eccentric to the valve stem,

◆ The third is eccentric; the diameter is eccentric, the valve stem is on one side of the center line of the valve channel, and the valve stem is eccentric to the center of the channel.

◆ The fourth eccentric, the top of the elliptical cone is eccentric, and the circumferential line of the perfect circular sealing ring is extended to form an elliptical cone, and the top of the elliptical cone is eccentric to the center of the channel.

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· The Fifth eccentricity;Quadruple offset bevel section of extended cone from oval circle, positive circle sealing ring.

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Design Feature+

◆ Quintuple offset offers a positive circular sealing ring with spherical surface, comparing with the oval shaped sealing ring from triple offset, it is able to better control the expansion and contraction variants from high and low temperature. In this case, quintuple offset is the best solution to the structure design of butterfly valve for high and low temperature services.

◆ Quintuple offset is able to increase its axial eccentricity (larger diameter of stem), and to reduce its radial eccentricity. Its superior data value is essential for high pressure butterfly valve design.

◆ The reduction of radial eccentricity brings lower opening torque, reduces the abrasion during opening and closing for high pressure butterfly. Making sure the service lift time longer than triple offset butterfly valve.

◆ Pressure on the sealing ring is more even, life time of sealing ring is longer, which is more suitable for the valve design of high pressure and variable temperature service conditions.

Design Standard+

◆ Design: API 609

◆ Face to face: API609 / ISO5752-20 / ISO5752-13 / DIN F4 /EN558

◆ Flange end: ASME B16.5 / ASME B16.47 / EN1092-1 / GOST 12815 / Gost 33259 /MSS-SP44

◆ Butt-welding end: ASME B16.25

◆ Test: API598

◆ Fire safe: API607 / API6FA

Technical Specification+

◆ Size: 2”~104”(DN50~DN2600)

◆ Class: 150LB ~ 2500LB / PN6 ~ PN420

◆ Connection: Double flange / Butt weld / Lug / Wafer

◆ Operation: Worm Gear / Pneumatic actuator / Electric actuator

◆ Temperature:-196~900℃

◆ Application: Direct heating / Iron and steel smelting / LNG / Power plants / crystalline particles / powders / mucus ect various harsh working conditions

Material Option+

◆ Body&Disc: Carbon steel(WCB,LCB)

◆ Stainless steel(CF8,CF8M,CF3,CF3M) /

◆ Duplex stainless steel(4A,5A,6A) /

◆ Hastelloy alloy(N-12MV,CW-12MW,CW-2M) /

◆ Inconel alloy(CY-40,CW-6MC) /

◆ Monel alloy(M35-1) /

◆ Aluminium bronze alloy(C95400,C95500,C95800,AB2C)

◆ Stem: SS420 / 17-4PH / F51/ F53 / XM-19 / Monel-K500 / Inconel-625 / Hastelloy-276 / Titanium

◆ Disc Sealing: / F304+ Nitriding / F304+STL / F316+ Nitriding / F316+STL

◆ Body Seat: / F304+ Nitriding / F304+STL / F316+ Nitriding / F316+STL

Aplication in+