| Concentric Butterfly Valve |
| SUNGO SB series butterfly valves featured with concentri design,is a reliable, maintenance free and cost effective valve. With various optional elastomer material, it can ensure gas tight seal, leakage free and corrosion resistant in various applications. Seat is designed with back up ring prevents the seat from collapsing or dislodging and is easily replaceable in the field.Upon client request,this series valves can also be designed for Dead End service at maximum pressure rating. |
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| Butterfly valve Design Construction and Specifications |
| SUNGO Butterfly valves conform to ASME B 16.34 |
| Each are tested according to API 598,and marking is per MSS SP-25 |
| Construction is as follows |
| * Mounting Pad |
| * Anti-Blowout spring pin |
| * Position Indicator plate |
| * Back-up ring supported seat |
| Concentric Butterfly Valve |
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| Standard Material Specification |
| Parts No. |
Parts |
Material Series |
| Cast Iron |
Ductile Iron |
Cast Steel |
Stainless Steel |
| 1 |
Body |
ASTM A126-B |
ASTM A399-80-45-10 |
ASTM A216 WCB |
ASTM A351 CF8M |
| ASTM A351 CF8 |
| 2 |
Disc |
ASTM A399-80-45-10 |
ASTM A399-80-45-10 |
ASTM A351 CF8 |
ASTM A351 CF8 |
| ASTM A351 CF8 |
ASTM A351 CF8 |
ASTM A351 CF8M |
ASTM A351 CF8M |
| ASTM A351 CF8M |
ASTM A351 CF8M |
ASTM B148 |
ASTM B148 |
| ASTM B148 |
ASTM B148 |
MONEL |
MONEL |
| MONEL |
MONEL |
銆€ |
銆€ |
| 3 |
Handle |
ASTM A126-B |
ASTM A126-B |
ASTM A126-B |
ASTM A126-B |
| 4 |
Indicate Plate |
CARBON STEEL |
CARBON STEEL |
CARBON STEEL |
S.S. |
| 5 |
Seat |
EPDM |
EPDM |
EPDM |
EPDM |
| NBR |
NBR |
NBR |
NBR |
| VITON |
VITON |
VITON |
VITON |
| NEOPRENE |
NEOPRENE |
NEOPRENE |
NEOPRENE |
| HYPALON |
HYPALON |
HYPALON |
HYPALON |
| PTFE |
PTFE |
PTFE |
PTFE |
| 6 |
Shaft |
ASTM A182-F6 |
ASTM A182-F6 |
ASTM A182-F6 |
ASTM A182-F6 |
| ASTM A182-F304 |
ASTM A182-F304 |
ASTM A182-F304 |
ASTM A182-F304 |
| ASTM A182-F316 |
ASTM A182-F316 |
ASTM A182-F316 |
ASTM A182-F316 |
| MONEL K500 |
MONEL K500 |
MONEL K500 |
MONEL K500 |
| 17-4PH |
17-4PH |
17-4PH |
17-4PH |
| 7 |
Hub Shaft |
ASTM A182-F6 |
ASTM A182-F6 |
ASTM A182-F6 |
ASTM A182-F6 |
| ASTM A 182-F304 |
ASTM A 182-F304 |
ASTM A 182-F304 |
ASTM A 182-F304 |
| ASTM A 182-F316 |
ASTM A 182-F316 |
ASTM A 182-F316 |
ASTM A 182-F316 |
| MONEL K500 |
MONEL K500 |
MONEL K500 |
MONEL K500 |
| 17-4 PH |
17-4 PH |
17-4 PH |
17-4 PH |
| 8 |
Bushing |
PTFE |
PTFE |
PTFE |
PTFE |
| 9 |
O-Ring |
EPDM |
EPDM |
EPDM |
EPDM |
| NBR |
NBR |
NBR |
NBR |
| VITON |
VITON |
VITON |
VITON |
| 10 |
Retaining Pin |
S.S. |
S.S. |
S.S. |
S.S. |
| 11 |
Bolt |
CARBON STEEL |
CARBON STEEL |
CARBON STEEL |
CARBON STEEL |
| 12 |
Nut |
CARBON STEEL |
CARBON STEEL |
CARBON STEEL |
CARBON STEEL |
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