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Pneumatic Fixed Ball Valve

Products > Pneumatic valve series > Pneumatic Fixed Ball Valve

Pneumatic Fixed Ball Valve

Nominal Diameter: DN50-DN1000
Nominal Pressure: 1.6MPa-10.0 MPa
Connection Form: Flange Type
Applicable Temperature:-20～+90℃
Body Material: WCB, CF8, CF8M, CF3M
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First, Pneumatic Fixed Ball Valve Product Overview
Pneumatic fixed ball valve is composed of angle stroke pneumatic actuator and fixed ball valve. Using the upper and lower valve stem fixed spool (shaft support) and movable seal seat design, the work is more stable. The pneumatic fixed ball valve has the function of automatic compensation. The two-way sealing valve seat has no clearance, and it has a large shear force and self-cleaning function when turning. The flow resistance coefficient is small, the installation is convenient, the operation is reliable, the sealing is good, the adaptability is strong, and the maintenance is simple. Pneumatic fixed ball valve can be equipped with travel limit switch, solenoid valve, pressure reducing valve, air filter and other accessories. The control switch gas source is in the range of 0.4MPa-0.7MPa, and sends two pairs of passive contact signals to indicate the valve switch. At present the pneumatic fixed ball valve is widely used in petroleum and chemical industry, metallurgy, environmental protection, water supply and drainage, electric power, light industry, papermaking, high-voltage equipment and other industrial automatic control system for centralized remote control or local control.

Two, Pneumatic Fixed Ball Valve Product Characteristics
1, Pneumatic fixed ball valve with fixed ball design. The moving parts of the friction coefficient and small material, operation torque small flexible use.
2, Pneumatic fixed ball valve adopts full diameter or shrinkage, the flow resistance is small.
3, Hard seal pneumatic fixed ball valve adopts two-way metal movable sealing structure, with automatic compensation and self-cleaning function, sealing performance is stable.
4, The use of double movable seal seat design, with two-way sealing function, installation without considering the media flow direction.
5, With anti-static structure design. A conductive spring is arranged between the valve body and the valve body and between the valve rod and the ball, so as to avoid the electrostatic ignition and ignite the flammable medium.
6, With arson function design. In the case of emergency fire, the metal seal is formed on the sealing surface of the valve seat.

[Optional Attachment]:
1, Cut off accessories: single electronic controlled solenoid valve, double electronic controlled solenoid valve, limit switch return device.
2, Adjustable accessories: Electrical positioner, pneumatic positioner, electrical converter.
3, Gas processing accessories: air filter pressure reducing valve, gas source treatment sanlian.
4,  Manual mechanism: HVSD hand operating mechanism.

Three. Other Parameters Of Pneumatic Fixed Ball Valve
1, valve body

Type of BodyTwo Stage Casting Valve Body
Nominal DiameterDN50～1000mm
Nominal PressurePN1.6、2.5、4.0、6.4、10.0 MPa；ANSI 150 300 600 900 LB；JIS 10 20 30 40 K
Connection FormFlange type
Flange StandardJIS、ANSI、GB、JB、HG
Bonnet FormOne-piece
Gland TypeBolt Pressing Type
Sealing FillerV PTFE Packing, Impregnated PTFE Asbestos Filler, Asbestos Textile Filler, Graphite Filler


2、Valve Internals

Spool FormO-type Fixed Ball Type Valve Core
Flow CharacteristicsApproximately Fast Open Type


3、Executive Mechanism

Actuator TypeGT, SR, ST, AT, AW series of single and double acting pneumatic actuators
Gas supply Pressure0.4～0.7MPa
Air ConnectionG1/4"、G1/8"、G3/8"、G1/2"
Ambient Temperature-20～+90℃
Action FormSingle acting actuator: gas shut off (B) - valve opening (FO) when gas is out of breath; gas open (K) - valve position off (FC) when air is out of breath
Double acting actuator: gas shut off (B) - valve position holding (FL) when gas lost; gas open (K) - valve position holding (FL) when lost air
Fitting accessoriesPositioner, solenoid valve, air filter pressure reducer, retaining valve, stroke switch, valve position conveyor, hand wheel mechanism, etc.


Four, Pneumatic Fixed Ball Valve Main Parts And Materials

1BaseWCB、CF8、CF8M、CF3M
2Left Valve BodyWCB、CF8、CF8M、CF3M
3Lower Valve Shaft2Cr13、304、316、316L
4Right Valve BodyWCB、CF8、CF8M、CF3M
5Sphere2Cr13、304、316、316L
6Seal RingPTFE、PPL、304、316、316L
7Spring65Mn、Stainless Steel
8pin25、35、45
9Upper Valve Shaft2Cr13、304、316、316L
10BracketWCB、CF8、CF8M、CF3M
11Packing PlateWCB、CF8、CF8M、CF3M
12Actuator

Provide Configuration According To Customer Requirements


Five, Pneumatic Fixed Ball Valve Main Performance Indicators

Nominal Diameter DN(mm)5065801001251502002503003504004505006007008009001000
Allowable Pressure Difference(MPa)≤ Nominal Pressure
Range Of Action0～90°
Leakage Volume QSoft Seal VI class, hard seal IV class, conform to ANSI B16.104 standard
Basic ErrorWith Locator: Less than full stroke±2%
Return DifferenceWith Locator: Less than 2% of the total journey


Six, The Main Performance Specification Of Pneumatic Fixed Ball Valve

Test Pressure(MPa)Nominal Pressure(MPa)Pressure Stage(class)JIS(K)
1.62.54.06.410.015030060010K20K
Strength Test2.43.756.09.615.03.07.516.52.43.8
Sealing Test1.762.754.47.0411.02.25.512.11.52.8
Airtight Test0.4～0.7MPa


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Nominal Diameter  DN(mm)506580100125150200250300350400500600700
L130140150165180200220250280320360400630750
H------335385430470590700780950
H1According to the executing agency, the configuration actuator is different, the connection size is different
A
D165185200220250285340405460520580705840910
D1125145160180210240295355410470525650770840
D299118132156184211266319370435485608718788
n-φd4-184-188-188-188-188-2212-2212-2612-2612-2612-3012-3412-4112-41