Triple eccentric butterfly valve, also called triple offset butterfly valve, is a high-performance butterfly valve. The triple eccentric butterfly valve was developed to make up for the defects of the double eccentric butterfly valve and is an improvement on the double eccentric butterfly valve.
1. First offset: Provides continuous sealing;
2. Second offset: Allows the valve to open with minimal friction, which extends its life;
3. Third offset: Allows the seat and seal ring to rotate without interference, which eliminates rubbing and reduces wear;
1. Frictionless sealing: The metal-to-metal seal allows for a tight shutoff in high-pressure and high-temperature systems;
2. Low torque: The valve is easier to automate than other metal seated valves;
3. Reduced maintenance: The lack of cavities between sealing components minimizes maintenance costs;
4. Field replaceable parts: The seat and seal ring can be replaced, which further reduces maintenance costs;
Triple eccentric butterfly valve is designed as Metal to Metal Seats, so it is widely used in high temperature environment, such as materials 321, 310S, C276, etc., the highest temperature can reach 1000℃ (1832℉).
In addition, the triple eccentric butterfly valve can be made of Monel 400 material, which has a good effect on resisting seawater corrosion; it can also be made of duplex steel UNS S31803, which has an excellent effect on resisting chloride ions in high-salinity wastewater.
1. For non-granular media:
we provide "metal + PTFE" (temperature ≤ 200℃) Disc, or "metal + graphite" (temperature ＞ 200℃) Disc.
This Disc is equivalent to a soft-seal butterfly valve and can achieve Class A leakage.
2. For granular media or media containing particles:
we provide "metal + STELLITE" Disc to prevent particles in the medium from wearing the valve seat.
★Design Acc. to ASME B16.34, API 609 (ANSI Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve));
★Design Acc. to EN-12516-1/2 and EN 593 (EN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve), DIN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve)).
★Test Acc. to API 598 (ANSI Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve));
★Test Acc. to EN 12266-1/2 (EN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve), DIN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve)).
★All Eccentric Butterfly Valve (Triple Offset Butterfly Valve) surface is finely machined to achieve the required roughness and conforms to standard MSS SP-55.
★From 2’’ to 80’’ (ANSI Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve));
★From DN50 to DN2000 (EN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve), DIN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve)).
★ANSI Class 150 Eccentric Butterfly Valve (Triple Offset Butterfly Valve) (ANSI Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve));
★ANSI Class 300 Eccentric Butterfly Valve (Triple Offset Butterfly Valve) (ANSI Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve));
★ANSI Class 600 Eccentric Butterfly Valve (Triple Offset Butterfly Valve) (ANSI Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve));
★EN 1092 PN 16 Eccentric Butterfly Valve (Triple Offset Butterfly Valve) (EN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve), DIN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve));
★EN 1092 PN 25 Eccentric Butterfly Valve (Triple Offset Butterfly Valve) (EN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve), DIN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve));
★EN 1092 PN 40 Eccentric Butterfly Valve (Triple Offset Butterfly Valve) (EN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve), DIN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve));
★EN 1092 PN 63 Eccentric Butterfly Valve (Triple Offset Butterfly Valve) (EN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve), DIN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve));
★EN 1092 PN 100 Eccentric Butterfly Valve (Triple Offset Butterfly Valve) (EN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve), DIN Standard Eccentric Butterfly Valve (Triple Offset Butterfly Valve));
★Carbon Steel WCB (EN 1.0619) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Carbon Steel WCC Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Carbon Steel LCB Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Carbon Steel LCC Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Alloy Steel LC3 Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Alloy Steel C5 (EN 1.7362) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Alloy Steel C12 Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Alloy Steel WC6 (EN 1.7357) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Alloy Steel WC9 (EN 1.7379) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Alloy Steel C12A (EN 1.4903) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel CF8 (EN 1.4308) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel CF8M (EN 1.4408) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel CF3 (EN 1.4309) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel CF3M (EN 1.4409) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel CG8M (EN 1.4449) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel CK3MCuN (EN 1.4547) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel CN7M (2.4066) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel 316Ti (EN 1.4571) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel 321 (EN 1.4541) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel 347 (EN 1.4550) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel 347H (EN 1.4912) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel 904L (EN 1.4539) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Stainless Steel 310MoLN (EN 1.4466) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★UNS S38815 (ZeCor-Z / ZeCor-310M) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★ASTM A351 CD4MCu Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Duplex Steel A995 Gr. 4A (EN 1.4462) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Duplex Steel A995 Gr. 5A (EN 1.4410) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Duplex Steel A995 Gr. 6A (EN 1.4501) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Nickel 200 (EN 2.4066) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Nickel 201 (EN 2.4068) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Incoloy 800 (EN 1.4876) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Incoloy 800H (EN 1.4958) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Incoloy 825 (EN 2.4858) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Inconel 600 (EN 2.4816) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Inconel 625 (EN 2.4856) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Inconel 718 (EN 2.4668) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Monel 400 (EN 2.4360) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Monel K500 (EN 2.4375) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Titanium Gr. 2 (EN 3.7035) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Titanium Gr. 3 (EN 3.7055) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Titanium Gr. 10 Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Hastelloy C276 (2.4819) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Hastelloy B3 (EN 2.4600) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Hastelloy C22 (EN 2.4602) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Hastelloy C4 (EN 2.4610) Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Nickel Aluminum Bronze C95500 Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Nickel Aluminum Bronze C95800 Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Nickel Aluminum Bronze C63000 Eccentric Butterfly Valve (Triple Offset Butterfly Valve).
★Please refer to the "Temperature and Pressure Curve of Eccentric Butterfly Valve (Triple Offset Butterfly Valve)" for temperature and pressure changes.
★Lug Ends;
★Wafer Ends;
★Butt Weld Ends;
★Double Flange Ends;
★CE Marking is Available to Eccentric Butterfly Valve (Triple Offset Butterfly Valve) with a Diameter of DN32 or Larger.
★For the Chemical Composition of Eccentric Butterfly Valve (Triple Offset Butterfly Valve), please refer to EN 10204 Type 3.1 certificate.
★For the Mechanical Properties of Eccentric Butterfly Valve (Triple Offset Butterfly Valve), please refer to EN 10204 Type 3.1 certificate.
★All Eccentric Butterfly Valve (Triple Offset Butterfly Valve) will be delivered with EN 10204 Type 3.1 Certificate.
★MSS SP-55 Certified of Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★NACE MR 0175 Certified of Eccentric Butterfly Valve (Triple Offset Butterfly Valve)
★ISO 9001 Certified of Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★PED Certified of Eccentric Butterfly Valve (Triple Offset Butterfly Valve).
★NACE MR0175 is available upon request of Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★ATEX is available upon request of Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★TA-LUFT is available upon request of Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★SIL is available upon request of Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
★Degreasing is available upon request of Eccentric Butterfly Valve (Triple Offset Butterfly Valve);
Series 63 Model 22 
Series 63 Model 32 
Series 63 Model 42 
Gear Operation 
Series AW Pneumatic Actuator 
Electric Actuator Operation 
Series QU Electric Actuator 
Mechanical Valve Positioner 
Intelligent Valve Positioner 
APL 210N Limit Switch Box 
APL 410N Limit Switch Box 
Solenoid Valve 
Solenoid Valve (ATEX) 
Solenoid Valve (ATEX + H2)