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Metal to Metal Sealing PTFE Seat Flange End Butterfly Valves

Metal to Metal Sealing PTFE Seat Flange End Butterfly Valves

Handle Valves, Worm Gear Valves, Penumatic Valves manufacturer / supplier in China, offering Metal to Metal Sealing PTFE Seat Flange End Butterfly Valves, Ductile Iron 300psi NPT Threaded Grooved Caps, Ductile Iron 300psi Grooved Threaded Adator Flange and so on.


Basic Info

  • Connection Form: Flange

  • Seal Form: Force Sealed

  • Work Pressure: Mid-Pressure (2.5mpa< Pn <6.4mpa)

  • Material of Seal Surface: Soft Sealed

  • Specification: size: 2′′-24′′

  • Driving Mode: Manual

  • Structure: Centre Sealing

  • Valve Stem: Normal

  • Working Temperature: Normal Temperature (-40°C<T<120°C)

  • Valve Body: Casting

  • Size: 2′′24′′

  • Transport Package: in Poly Wooden Cases or Poly Wooden Pallets

  • Origin: China

Product Description


1. Long service life with reliable seal and without frequent main tenance

2. Pressure loss

     Too much pressure loss will bring increased cost of correlative energy

      Butterfly valve have flow characteristics three times better than globe valve,and about 75%

      of a same size gate valve

3. Multi-Function

    Butterfly valve can be used for on/off service and throttling,They are superior in Multi-function

    as compared to gate or globe valves.Butterfly valve can be widely used in chemical field due

    to trim options and choice of elastomeric liner.


    Butterfly valve have feature of light in weight and small in size,for example, weight and size of 

    a 10'' butterfly valve are 1/9 and 1/6 of a 10'' gate valve.So butterfly valve is easy to install and 

    save cost of piping system.

5.Bubble Tight

    Butterfly valve with resilient seat design can be bubble tight as compared to metal seated gate

    or globe valves.

6.Easy of operation

   Butterfly valve offer 90-degree open to close.

7. Butterfly valves is approximate 35-40% cost of a same size gate valve. Also low 

    installed cost than gate valve.


    Properly installed butterfly valves are self cleaning and are less susceptible to failure due to 

    trash material in pipe.

9.Operation: level operation

10.Body:cast iron,stainless steel 304/316,aluminum bronze

11.Painting:PTFE coating,nylon painting





16.Packaging:export poly wooden cases, or as per customers' requirements

17.Payment:by L/C,T/T and D/P

Technical Specification
Nominal DiameterDN40-DN1200DN40-DN800DN40-DN600
Nominal Pressure1.0MPa1.6MPa2.0MPa
Test Pressure on Shell1.5MPa2.4MPa3.0MPa
Test Pressure on Seal 1.1MPa1.76MPa2.2MPa

Service Temperature




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