DOUBLE ECCENTRIC BUTTERFLY VALVE

Double Eccentric Butterfly Valve Descriptions

Double eccentric butterfly valve long type 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 flanged eccentric butterfly valve is suitable for 90° on-off operation and regulation service. We manufactures the double eccentric butterfly valve long type face to face according to ISO5752 series 14 with sizes of 4″~160″ (DN100~4000mm). 

1. 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

2. TECHNICAL SPECIFICATIONS 

• PN6/PN10/PN16/PN25/PN40

• Size: 4″~160″ (DN100~4000mm)

• Materials: A126 B (GG25), A536 65-45-12 (GGG40), A216 WCB, S.S.304(CF8), S.S.316(CF8M), bronze C95800

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

• Applicable medium: water, sewage, sea water, air, food, medicine, oil, low corrosive liquids

• Applicable temperature: -20℃~+120℃ (higher temperature is available upon request)

3. STANDARDS 

• Design & manufacturing: EN593

• Face to face: ISO 5752 series 14, DIN3202-F4

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

• Top flange: ISO 5211

• Inspection & testing: EN12266

4. APPLICATIONS 

• Water works, water projects

• Environment protection

• Public facilities

• Power plant

• Building industry, real estate

• Petroleum, chemical industry

• Steel work, metallurgy