Concentric butterfly valve

Concentric Geometry

• Compact construction results in low weight, less space in installation
• Central shaft position, 100% bi-directional bubble tight shut off makes installation acceptable at any direction
• No cavities in the flow passage, easy to clean and disinfect for potable water system, etc.
• Linear creates seal with mating flanges so no media is in contact with the valve body
• Integral ISO 5211 top flange for easy fitting of actuators
• Low operating torques results in easy operation and economical actuator sizing
• One-piece resilient seat with integral O-ring seal eliminates the need for additional flange gasket
• Extended neck design in consideration of construction method and operability

Standard Specifications

DESIGN

▪ ISO 5752 / BS 5155
▪ MSS SP 67 / API 609

FACE-TO-FACE

▪ API 609 Cat. A
▪ Wafer and Lugged
▪ Double flange
▪ ISO 5752 Sr.13/20

FLANGE STANDARD

▪ ASME B 16.5/16.47
▪ BS 4504 / EN 1092-1
▪ JIS B2220
▪ BS 10 Table D&E
▪ Others on request

PRESSURE RATING

▪ ANSI B 16.34 Class 150
▪ JIS 5K / 10K / 16K / 20K
▪ PN 6 / 10 / 16

NOMINAL DIAMETER

▪ 1.5” to 160”
▪ DN 40 to 4000

TESTING

▪ API 598
▪ MSS SP 67

Applicable Materials

Body: A126 CL.B1, A395, A536, A216 WCB, A351 CF8 / CF8M

Disc: A351 CF8 / CF8M, B62 C83600, B148 C95800

Seat: EPDM, NBR, FKM, Silicon, Neoprene, PTFE

Stem: A276 410 / 304 / 316, A564 630, B150 C63000, Monel® K400 / 500 (UNS N04400 / N05500)