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Quick Details

  • Standard or Nonstandard: Standard
  • Structure: Rotary Valve
  • Pressure: Medium Pressure
  • Power: Hydraulic,Pneumatic,Electric,Worm Gear,Manual
  • Material: Casting
  • Temperature of Media: Normal Temperature
  • Media: Water and Oil
  • Port Size: DN50--DN2400
  • Place of Origin: Zhejiang, China (Mainland)
  • Model Number: D343H-16C
  • Brand Name: JSV
  • Butterfly valve disc: WCB / 304SS / 316SS / LCC
  • Butterfly valve material: WCB / 304SS / 316SS / LCC
  • Butterfly valve stem: 2Cr13 / 304ss / 316ss / 2205 / 17-4PH / c95800
  • size: DN50-DN2400
  • Butterfly valve PN: PN6/10/16/25/150LB/300LB
  • Design & Manufacture: AWWA C504 / API 609
  • Flange Connection: AWWA C207 / ASME N16.5 / ASME B16.47
  • Face to Face Dimension: AWWA C504 / API 609
  • Test & Inspection: AWWA C504 / API 598 .
  • Typle: buttterfly valve with flange

Packaging & Delivery

Packaging Details Free of Fumigation Box: plywood boxes, wooden cases.
Delivery Time 5-25 Days






Picture of product



Product Description



1. Overview and Purpose
     Two-way flow hard sealed rotary ball valve,a new  improved product,our company  accumulated experience in the design and manufacture,use and maintenance of valves over the years ,according  to  the market demand . The valve can not only reliably cut off  at the forward pressure, but also can be sealed reliably in a reverse pressure. The valve  use semi-ball valve seal structure and principles, shape with butterfly structure, so that which includes these characteristics : small size, light weight ,and  bi-directional sealing , small seal friction, durable, lightweight hoist and other properties. Therefore, its value is far higher than half ball valve.

       The  valve widely used in the pump outlet end, pipe network system, recycling water system, backflow prevention systems and so on, can be used in metallurgy, mining, petrochemical, chemical, power, environmental, municipal and industries to shutoff and regulate  the pipeline .At the conditions that required bi-directional seal valve,one rotary valve  is equivalent of two one-way sealing valve.


2. the main types and working principles
1)   Butterfly valvemain types: 

Driven  typeWorm GearHydraulicPneumaticElectric 
Connect  typeFlange    
Sealing  materialStainless Steel  Carbon Steel  Hard Alloys       
PressurePN16PN10PN16        PN25           PN40           
Body materialWCBStainless Steel   


2) the butterfly valve working principle:

       The most important feature of  two-way flow valve is both good sealing in the forward pressure and back pressure. When the forward pressure work, medium pressure push forward a gap displacement valve plate, valve plate sealing surface against the valve seat sealing surface  and transfer pressure, let the valve seat be  pushed  to the body stage, making a good seal. When the reverse pressure work, the valve will appear  contrary action


3. Butterfly valve Technical performance specifications

Nominal pressure


pressure test(MPa)

Working  Temp (℃)

Working Medium

Shell test 

Seal test

Back   pressure   





up to 300
















Related Products





Packaging & Shipping




   Free of Fumigation Box: plywood boxes, wooden cases.





Our Services


ProfessionalWe are professional manufacturer of valves.Ensure our valves is quality controlled and reliable.


Quality Control: We have been engaged in valve design for many year and can guarantee best quality


Experienced Sales Team: Our sales team is experienced, and they all know our product  well.


 About Price: we provide very reasonable and competitive price for you.At the same time ,

                      we have alibaba trade insurance amount USD 19000



Company Information

  Business type : Manufacture Trading Company 

Location : Zhejiang China (Mainland)


Year Established : 1995


Main product metal to metal butterfly valves, rubber sealing butterfly valves, hydraulic butterfly valves, telescopic butterfly valves,  and etc.

At present, we mainly produce/manufacture "ISO, API, ANSI, DIN, BS, EN, GB, JB" standard valves, also special valves according to the requirement of clients.





workshop situation

  We have own factory , there is our production picture : 







  How to contact us


Send your inquiry to us . Thankyou


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China (Mainland) | Manufacturer, Trading Company
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