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  • Ductile Iron Wafer Butterfly Valve
  • Wafer Flange Ductile Iron  Rubber Line Butterfly Valves
  • Ductile Iron Wafer Butterfly Valve
  • Wafer Flange Ductile Iron  Rubber Line Butterfly Valves
Gear Box Ductile Iron Butterfly Valve
Size Range
NPS2~NPS40
Pressure Range
PN6~PN16,Class150
Body material
Ductile iron
Disc
Stainless steel,ductile steel
Seat
EPDM
Body type
Wafer
Working temperature
≤80°C
Operating method
Gear box
Pressure test
GB/T13927; API598
Face to Face
GB/T12221; API609
Model
FRD371X
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Introduction

 FREE-VALVE’s gear box ductile iron wafer type butterfly valve is an economical and robust valve with an rubber lining, offering longer service life with lower maintenance cost. Self-lubricating bearings ensures perfect guiding and turning of the shaft without seizure or premature wear. Flange gaskets are not required since the lining that extends onto the faces acts as a gasket. The bonded liner extends the lifeti

Advantage
1.Excellent double side sealing functions,Completely seals,Zero leakage in test, it can be use for cut off medium or regulated flow.
2.The simple structure, the weight is light, 90' revolves,Quick Open-close,Fixable operation.
3.Centric disc, one piece shaft,Easy to disassemble and repair,can be installed in any position.
4.The choice of disc and seat materials to suit working conditions and medium.
5.EPDM Lined seat ,Stainless steel disc.



Applications
 FREE-VALVE’s gear box ductile iron wafer type butterfly valve could easily achieve Bi-Directional sealing, therefore is a widely applied valve in oilfield, agriculture,Power Plant Condensates Waterworks, Water treatment, Seawater, Exhaust,Flue Gas.Because of rubber lined body materials,it is usually used in low pressure lines.



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