Double Eccentric butterfly valve

1. PROFUCT PROFILE

Flanged Double Eccentric butterfly valve is one type of long pattern butterfly valve. It is one type of high performance butterfly valve, which is with eccentric action reduces torque and seat contact during operation, extending valve service life. Its seat can be repaired on site, no needing dis-assembly. The double eccentric butterfly valve long time face to face is according to EN558-1 series 13. Double Eccentric Resilient Seated Butterfly Valve is one of the main product type preferred in water networks. Through its disc design where the center is shifted in two axis, this leads to a big improvement on decreasing operation torque values, lowering the friction on disc sealing area and extended service life. Series 13 type occupies less space compared to Series 14 type.

2. FEATURES

· Eccentric action reduces torque and seat contact during operation, extending valve service life

· Suitable for 90° on-off operation and regulation service

· The seat can be repaired on site, no needing dis-assembly

· Epoxy coating for corrosion resistance and long service life

· Good sealing capability, no leakage

3. TECHNICAL SPECIFICATION

· PN6/PN10/PN16/PN25

· Size: 4”~160” (DN100~4000mm)

· Materials: cast iron A126 B (GG25), ductile iron A536 65-45-12 (GGG40/50)

· Coating: fusion bonded epoxy coating min. thickness ≥250micron

· Working temperature: 0℃~+80℃

4. STANDARD

· Design & manufacturing: EN593-2004

· Face to face: EN558-1 series 14, DIN3202-F4

· Flanged ends: ISO7005-2, EN1092-2, DIN2501

· Top flange: ISO 5211

· Inspection & testing: EN12266

5. APPLICATION

· Water works, water projects

· Environment protection

· Public facilities

· Power plant

· Real estate

· Petroleum, chemical industry

· Steel work, metallurgy

· Paper plant

· Food & beverage