China CF8 Pneumatic V type ball valve with accessory factory and manufacturers

CF8 Pneumatic V type ball valve with accessory

Short Description:

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.

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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.

CF8 Pneumatic V type ball valve with accessory 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

CF8 Pneumatic V type ball valve with accessory technical performance

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