Valve Type Soft Seated Butterfly Valves
Valve Model VBS Wafer VBS Flanged VBS Wafer FAB
Valve Sizes 80-700 mm 600-1800 mm 500-1200 mm
End connection Wafer Flanged Wafer
Construction Cast Cast Fabricated
Design Standards AWWA C 504 Cl. 150 AWWA C 504 Cl. 75,150
Flange Standard ANSI 150,
AWWA C 207 Cl.D (Std)
JIS 10K, DIN 10K
BS 10K (Options) AWWA C 207 Cl. D (Std)
BS PN 10,
IS 6392 PN 10 (Option) AWWA C 207 Cl.B (Std) Available with any flange standard on demand.
Max. working Pressure 5.25 Kg/cm2 (75 PSI Rating)
10.5 Kg/cm2 (150 PSI Rating) 5.25Kg/cm2 (75 PSI Rating)
10.5 Kg/cm2 (150 PSI Rating) 1 Kg/cm2
Working temp. range -20 to 2000C -20 to 2000C -20 to 2000C
Hydro test pressure 10.5,21 Kg/cm2 (75,150 PSI) 10.5, 21 Kg/cm2 (75,150 PSI) 2 Kg/cm2
Seat leakage test pressure 5.25, 10.5 Kg/cm2 (75,150 PSI) 5.25, 10.5 Kg/cm2 (75,150 PSI) 1 Kg/cm2
Inherent Rangeability 20:1 20: 1 20: I
Refer Table 2
Control mode On-Off service (900), Regulating (600)
Flow Characteristics Inherent Butterfly valve Characteristics, Refer section V
Max. Differential Pressure Refer section VI for selection of actuators
Leakage Class Tight shuff off
Standard materials Body Carbon Steel (A216 WCB) Carbon Steel (A 216 WCB)
Cast iron (IS 210 Gr FG 260) Carbon Steel
(IS 2062 / IS 2002 . Gr.2A)
Vane Stainless steel (A 351 CF8, CF8M for 80-300 mm)
Carbon steel (A 216 WCB 300 - 700 mm) Carbon steel (A 216 WCB)
Cast iron (IS 210 Gr . FG 260) Carbon steel
(IS 2062 / IS 2002 . Gr.2A)
Shaft SS, A 479 Type 304, 316 SS, A479 Type 410 SS, A 479 Type 304, 316
Seat i" NBA, EPDM NBA Viton, NBR
Seat Ring,
Retaining Ring SS 304, 316 SS 304, 316 SS 304, 316
Bush Leaded tin bronze Leaded tin bronze Leaded tin bronze
Packing V-7132Y (Tef. Imp. Asbestos) v-7132Y V-7132Y
Options Body Stainless Steel
(A 351 CF8, CF8M)
Cast Iron
(IS 210 Gr FG 260+2% Ni) Cast Iron
(IS 210 Gr FG 260 + 2% Ni)
Stainless Steel
(A 351 CF8, CF8M) Stainless Steel
(A240 Type 304, 316)
Vane Stainless Steel (A 351 CF8, CF8M for 300-700mm) Cast Iron
(IS 210 Gr FG 260 + Ni)
Stainless steel (on demand)
(A 351CF8, CF8M) Stainless Steel
(A 240 Type 304, 316)
Shaft SS, A 479 Type 410 SS, A 479 Type 304, 316 SS, A 479 Type 410
Seat Viton, Neoprene, Silicone, Butyl Rubber, Teflon " EPDM, Viton EPDM, Neoprene, Silicone, Butyl Rubber
Bush Teflon, Stainless steel (Stellited) Teflon Teflon
Packing 'O' rings 'O' rings 'O' rings
