Double Eccentric High Temperature Butterfly Valves With Lug Wafer End CE Certificate

High Performance Double Eccentric High Temperature Butterfly Valves With Lug Wafer End

TEKO double offset design and dynamic seat construction provides a reliable 100% bi-directional disc sealing. This unique construction meets the high demands of applications in which high performance butterfly valves are being used. TEKO high performance butterfly valves can be used for a maximum pressure up to 100 bars or a maximum temperature of 500℃. The high performance butterfly valves can therefore very well be used for applications, where rubber liner butterfly valves no longer can be used, due to their limited pressure and temperature range.

Models

Wafer type

Lug type

Double flange

Standard Seat material

PTFE: -29℃ --180℃

RPTFE: -29℃ --220℃

RPTFE/SS316 (fire safe): -29℃ --220℃

Inconel B637: -29℃ --500℃

Standard Body Material:

A216 WCB/ 1.0619

A351 CF8M/ 1.4408

About double eccentric design

High performance butterfly valves, also known as double eccentric butterfly valves have stem which is mounted slightly out of the pipeline center and also behind the disc seat. This design leads to minima wear and low operating torques.

Main Feature of TEKO high performance butterfly valves

• Flow way direction - slot on top stem indicates positive disc position
• Mounting top flange - meets ISO 5211 pattern providing low cost near direct mount actuation capability
• Extra long neck provides path for heat dissipation and allows space for insulation
• Stem seal - self-lubricating PTFE V-rings prevent leakage to atmosphere
• O-Ring - serves as first line of defense for stem leakage
• Retainer cover - maintains seat integrity prior to installation, interchangeable with any seat option, standard surface finish is 125 - 200 AARH, compatible with both standard and spiral wound gasket designs
• Retainer fasteners - stainless steel set screws provide ease of seat replacement
• Over travel stop - integrally casted into body, prevents disc from rotating in wrong quadrant and damaging seat
• Anti-static grounding - provided by stem ball at the very end of the stem shaft
• Bottom flange cover equalizes pressure under shaft, eliminating piston effect at higher pressure
• Blowout proof shaft - 17-4 PH stainless steel stem provides excellent strength, alignment and rigid support to disc
• Easy-access parking gland provides means for packing adjustment even when direct mount actuation and insulation are utilized
• Top stem bearings - top RPTFE/stainless steel self-lubricating bearings provide excellent stem support and shaft alignment
• O-Ring - extra protection for leakage through body and seat retainer
• Soft seat - one piece solid RPTFE static and dynamic seat design seals at both high and low pressures
• Wedge pins - provide positive mechanical attachment of disc to shaft
• Bottom stem bearings - bottom RPTFE/stainless steel self-lubricating bearings provide excellent stem support and shaft alignment
• Shaft retainer provides positive stem retention
• Bottom packing - the lower shaft utilizes seal in the body to prevent external leakage and simplify valve maintenance
• Soft seated standard valves are suitable for vacuum service to 20 microns
• For dead end service

TEKO Industry Co., Limited, established in 2010, is a rapidly growing industry products manufacturer in China. Throughout 8 years of development, we have been now becoming the major valve supply in industries of petroleum, chemical plant, power station, mining, metallurgy, waste water treatment, shipbuilding etc.

Recently our business scope has covered the industry valves and marine valves, including the gate/globe/check valve, butterfly valve, knife gate valve, pinch valves, high performance butterfly valve, strainer and so on. With our experienced workers, we can now workable with big capacity up to 500 tons per month.

Always bearing in mind “quality first”, we operate production strictly following the ISO9001 regulations. In addition, our valves are hydraulic testing according to the requirements of related standards, such as API598. We ensure that all valves delivered are not satisfy the customer’s requirements, but also exceed their expectation. And we TEKOers truly mean it.

We have engineers with more dozens of years of experiences and that benefit us that we can always updated our valve new technology and new design that can fit most severe fluid services. It is so inspiring after we have handled the tough fluid for our customers, no matter how high temperature/pressure, highly abrasive, highly corrosive is. It also, at the same time, drives us to make progress every single day to offer the best service during the next time.

TEKO’s mission: “Nothing will happen, Except Satisfaction”. Our specialty, down-to-earth attitude, and sound services are core value to us and will lead TEKO to a new height. Please contact us and start to enjoy our good products and services.