control valve,Electric contrPneumaticol valve,Pneumatic ball valve-Control valve manufacturer

contact us



Address: NO.720, Suide Road, Jiading District,Shanghai, China.

Pneumatic V type Ball Valve


  • Port size:DN15~500, NPS 1/2〞~ 20〞
  • Pressure:PN16 ~ 25 CLASS 150/300LB
  • Medium:Water,oil,steam,etc.
  • Temperature :-40~450℃
  • Body material:WCB LCB CF8 CF3 CF8M CF3M
  • Description:
  • Pneumatic V type Ball Valve Featue

    Pneumatic V type Ball Valve is a special kind of ball valve. Pneumatic V type Ball Valve closure member is the V opening on the spherical segment. With sharp edges, the V opening forms shearing action with the seat during the rotation process of the spherical segment. Pneumatic V type Ball Valve has powerful cutting force to the media. The V opening on the spherical segment forms a sector area with the seat flow channel. During the rotation process, it can change the flow channel sectional area and carry out precise control of media. Pneumatic V type Ball Valve is a control valve with rotary motion. Its has the same sealing performance as ordinary ball valves, so that it has both control and on-off functions. When equipped with a pneumatic or electric actuator, Pneumatic V type Ball Valve can be widely applied in industrial process automatic control systems.

    Pneumatic V type Ball Valve Body integral structure: The body adopts an integral side entry structure with good structural rigidity, which does not easily cause external leakage.
    Upward and downward self-lubricating bearing: The body is installed with upward and downward lubricating bearing, which has high contact area with the stem, high carrying capacity, low friction coefficient, so that the valve torque is reduced.
    According to the requirements for media and service conditions, the Pneumatic V type Ball Valve seat can use metal hard seal or PTFE soft seal: The sealing face of the metal hard seal seat is subject to hard alloy overlaying welding, the ball face is subject to hard chrome plating or spray welding, ion nitriding and other hardening treatment, so as to prolong service life of the sealing face and improve heat resistance. The soft seal PTFE seat or reinforced PTFE seat has good sealing performance, corrosion resistance and wide application range.
  • Pneumatic V type Ball Valve material 

    Body Type: integral type
    Nominal diameter: DN15~500(NPS1/2~16)
    Nominal pressure: PN 1.6~4.0Mpa(Clsaa150~300)
    Type of connection: flanged
    Material: A216-WCB, A351-CF8, A351-CF8M, A351-CF3,
    A351-CF3M, A217-WC6, A217-WC9
    Bonnet: standard type: -29~250ºC
    high temperature type: 250~425ºC
    Packing: PTFE, flexible graphite, nickel-based wire reinforced flexible graphite
    Trim Plug type: cast ball with V notch
    Plug material: A182-F304, A182-F316
    Seat material: soft seal: PTFE, RPTFE, PPL
    hard seal: A182-F304, A182-F316
    Flow characteristic: approximate equal percentage
    Adjustable ratio: 300:1
    Rated Cv value: See table 5 for details.
    Rated travel: 0~90Ў
    Seat Leakage class: soft seal: ANSI B16.104 class VI
    Hard seal: ANSI B16.104 class IV, V
  • Pneumatic V type Ball Valve and technical performance

    Nominal diameter DN
    25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500
    Seat diameter
    20 26 33 40 53 66 86 104 128 170 212 255 320 368 414 460
    Flow capacity Cv value
    29 41 82 117 210 327 513 794 1155 2054 3209 4668 7177 11437 14479 17876