Ductile cast iron Butterfly valves (DJ series) SERIES

Ductile cast iron Butterfly valves (DJ series)

Maximum service pressureASME 1501.03 MPa10K1.0 MPaASME 2001.38 MPa16K1.6 MPaASME 2501.72 MPa20K2.0 MPaPN161.6 MPaPN252.5 MPaService temperature rangeNBR(Buna-N) seat0℃ to +70℃EPDM seat-20℃ to +120℃Continuous service temperature range0℃ to +100℃Applicable standardsValve designAPI 609, MSS-SP 67, EN 593, JIS B 2032Face to face dimensionsAPI 609 Category A, MSS-SP 67 W-1: Size 2 to 14W-2: Size 16 to 24EN 558 basic series 20, ISO 5752 20 Series, JIS B 2002 46 SeriesCoupling flangesWafer typeASME Cla Molded (glued) sheet structure is adopted for sizes 2 “to 12”. Larger size valves come with replaceable seats. This non-peeling sheet-to-body construction provides high fluid speed support, vacuum support, and maintenance-free for handling rapidly rising fluid speeds.* Up to 4 meters per second for on-off service of valves up to size 12 and up to 3 meters per second for sizes 14 and larger.* Up to 2 30Torr. (Vacuum service is optional for size 14 and larger.) The rubber seat is designed to be spherical in contact with the upper and lower stems. This ensures that the widely designed rubber sheet is protected from peeling and deformation, resulting in a long valve life. Thinner metal disks are the result of experimental research that embody conditions that minimize pressure loss. The four discs and two seat materials, and a combination of manual, pneumatic, or electrical actuators, make the applicable applications very versatile. Pneumatic or electric actuators with ISO 5211 mounting fl