Showing posts with label Ball Valve. Show all posts
    Showing posts with label Ball Valve. Show all posts
  • Descriptions
    Construction:
    3 Piece forged steel split body, full bore, trunnion mounted ball, independent ball and stem, anti-static design, cavity relieving seats, double block and bleed, designed according to API 6D.General Information :
     General Design API 6D
     Face to Face ANSI B16.10
     Flange Type ANSI B16.5
     Rating Class 150, 300, 600,  900 & 1500
     Sizes 2" through 16"

    Standard Materials:
     Body / Cap ASTM A105
     Stem ASTM A276-410
     Ball ASTM A105+Cr/ENP
     Seat PTFE
     Seat Retainer ASTM A105


  • A floating ball valve is a valve with its ball floating (not fixed by a trunnion) inside the valve body; it drifts toward to the downstream side and tightly pushes agains the seat under the medium pressure to ensure a reliable seal.
    The floating ball valve is a simple design with goog sealingperformance relying on the seat material to withstand the workload as the sealing pressure is barred by the seat ring. Floating ball valves are mainly used in low to mid level pressure applications.
     
    Cast Steel Floating Ball Valve

     Technical Specification
         Design and Manufacture : API 608, ISO 17292
         Face to Face/ End to End : ASME B16.10
         Flange End : ASME B16.5
         Test & Inspection : API 598

     Main Materials
         WCB, LCB, CF8 (M), CF3 (M),
         A995 4A, A995 5A, A995 6A,
         Alloy 20, Monel, Inconel

     Main Parts Material Sheet
    Note : (1) The lenght of the bonnet extension of cryogenic valves shall be determined base on actual working temperature

     Dimensions and Weights
                                   

     Class 150

     Class 300

     Class 600

     Floating Ball Valve Torque Table
     Note :
    The torque measuring and calculation is based on normal room temperature, when selected seat material is PTFE/ RPTFE for Class 150/ Class 300 and Nylon for Class 600.
    For low-temperature/ cryogenic service, the torque will increase 2 fold.
    When sizing the actuator, a safety factor of 1.3 - 1.5 times shall be applied.
    When the service or seat material is different than that specified above, the torque value will be different, it shall be subject to the conformation from the manufacturer.

    Forged Steel Floating Ball Valve

     Technical Specification
         Design and Manufacture : API 608, ISO 17292
         Face to Face/ End to End : ASME B16.10
         Flange End : ASME B16.5
         Test & Inspection : API 598

     Main Materials
         A 105, LF2,
         F304 (L), F316 (L), F51, F53, F55
         Alloy 20, Monel, Inconel

     Main Parts Material Sheet
    Note : (1) The lenght of the bonnet extension of cryogenic valves shall be determined base on actual working temperature

     Dimensions and Weights
                                     
    Class 150
    Class 300
    Class 600

     Class 800,Class 1500 - Class 2500

     Applicable Standards
         Design and Manufacture : ISO 17292 (BS 5351)
                                                   API 608
                                                   ASME B16.34
         Connection End
              Socket Weld End (SW) : ASME B16.11
              Threaded End (NPT) : ASME B1.20.1
              Butt-Weld End (BW) : ASME B16.25
         Test & Inspection : API 598

     Main Materials
         A 105, LF2,
         F304 (L), F316 (L), F347, F321, F51,
         Alloy 20, Monel

     Main Parts Material Sheet

     Dimensions and Weights
                                       

     Class 800 - Class 1500
    Note : Class 800 - Class 1500
               3-Pc, Bolted Bonnet, Full Port, Threaded, Butt-Weld, Socket Weld,
               Design ISO 17292 (BS5351), API608, ASME B16.34

     Class 2500
    Note : Class 2500
               3-Pc, Bolted Bonnet, Full Port, Threaded, Butt-Weld, Socket Weld
               Design ASME B16.34



  • The ball on a trunnion ball valve does not move with medium pressure. Trunnion ball valves have floating seats. This valve uses pressure actuated seats with locked-in non-metallic face seals. To Assure tight sealing at low pressure, special springs force the seats against the ball. At higher pressure, the upstream seat is forced against the ball by the pressure working across the differential between the area of the seat insert and the seat O-Ring. The higher the pressure, the tighter the seal.
     
    Cast Steel Trunnion Ball Valve
     
    Technical Specification
         Design and Manufacture : API 6D
         Face to Face/ End to End : API 6D, ASME B16.10
         Flange End : ASME B16.5, ASME B16.47
         Butt-Welding End : ASME B16.25
         Test & Inspection : API 6D, API 598
     
    Main Materials
         WCB, LCB, CF8(M), CF3(M)
         A995 4A, A995 5A, A995 6A
         Alloy 20, Monel, Inconel
     
    Main Parts Material Sheet
    Note : The Length of the bonnet extension of cryogenic valves shall be determined base on actual working temperature.
               This will be omitted in the future design upgrade and changes.
     
    Dimensions and Weights
     
    Class 150
     
    Class 300
     
    Class 600
     
    Class 900
     
    Class 1500
     
    Trunnion Ball Valve Torque Table
    Note :
    The torque measuring and calculation is based on normal room temperature, when selected seat material is PTFE/ RPTFE for Class 150/ Class 300 and Nylon for Class 600.
    For low-temperature/ cryogenic service, the torque will increase 2 fold.
    When sizing the actuator, a safety factor of 1.3 - 1.5 times shall be applied.
    When the service or seat material is different than that specified above, the torque value will be different, it shall be subject to the conformation from the manufacturer.
     
    Forged Steel Trunnion Ball Valve
     
    Technical Specification
         Design and Manufacture :
                        API 6D
         Face to Face/ End to End :
                        API 6D, ASME B16.10
         Flange End :
                        ASME B16.5, ASME B16.47
         Butt-Welding End :
                       ASME B16.25
         Test & Inspection :
                       API 6D, API 598
     
    Main Materials
         A105, LF2, F304 (L), F316 (L),
         F51, F53, F55
         Alloy 20, Monel, Inconel
     
    Main Parts Material Sheets
    Note : (1) The length of bonnet extension of cryogenic valves shall be determined base on actual working temperature.
     
    Dimensions and Weights
     
    Class 150
     
    Class 300
     
    Class 600
     
    Class 900
     
    Class 1500
     
    Class 2500
     

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