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Yongdeli wafer Butterfly Valves are produced strictly to API 609, DIN 3202, Tested to API 598, Accredited by ISO 9001, API 6D & CE
YONGDELI offers a broad line of Butterfly Valves, in types of Con-centric, Single Eccentric (Offset), Double Eccentric (Offset) & Tri- Eccentric (Offset); Ends Connections of Wafer, Flanged, Butt-weld, L ed & Grooved; Constructed in both Metal to metal & Resilient Seated. A wide range of applications from vacuum to very high pressure, and from low to very high temperature service

Yongdeli Butterfly Valves are used in a broad range of applications, from simple water lines, to extremely corrosive chemicals, to nuclear power plants. Yongdeli is a market leader in providing valves for difficult services, including:
Highly corrosive applications in chemical and petro-chemical plants, Chlorine gas, semi-conductor, pulp stock and paper industry, crude, diesel fuel, fresh water and seawater in ship-building or on existing cargo, tanker or passenger ships
Food applications, LNG liquefaction, LNG tanker ships and LNG receiving terminals 
Yongdeli butterfly valves have been solving fluid control problems in oilfield and general industrial applications for over 30 years. Today Yongdeli Technologies is putting that experience to work for you in more ways than ever before- meeting your changing needs with dependable Yongdeli butterfly valves and accessories.
STANDARDS COMPLIANCE:
ISO 5752, BS 5155, API 609, MSS-SP-68, ASME B16.10, ASME B16.5, DIN 3202
AVAILABLE MODIFICATIONS FOR VATAC BUTTERFLY VALVES
Packing and Gasket Changes » End Connection Modifications » Gear Operator Mounting
Body Linning » By-Pass » Customer Specified Coatings » Counterweight Operator 
Trim Changes » Actuation » Cryogenic Gas Columns » Stem Extensions