Pneumatic three-way flanged ball valve

Technical Parameter

Product Model: Q644F/Q645F

Nominal diameter: DN15~200mm

Nominal pressure: PN16, 25bar

Connection form: flange type

Medium temperature: W1:-40~180℃ W2:-40~300℃ W3:-30~425℃ W4:-40~425℃

Body material: WCB, ZG1Cr18Ni9Ti, ZG0Cr18Ni12Mo2Ti

Applicable medium: water, steam, oil, nitric acid, acetic acid


Product Detail

Product Description

Pneumatic three-way flanged ball valve is a three-channel rotary ball valve, which is used for media splitting, confluence and flow direction switching. Any pipe can be used as an inlet or an outlet. There are two types of pneumatic three-way L-type ball valve and pneumatic three-way T-type ball valve, which can meet different business process requirements. The pneumatic three-way L-type ball valve cuts off two of the three pipelines, and the pneumatic three-way T-type ball valve realizes the confluence and shunting of the three connected pipelines. Pneumatic three-way flanged ball valve is matched with electric valve positioner. Input 4~20mADC signal and 0.4~0.7MPa air source to control operation, and realize the adjustment of pressure, flow, temperature, liquid level and other parameters. It is also equipped with travel limit switch, solenoid valve, pressure reducing valve and 0.4-0.7MPa air source to realize switch operation, and send two pairs of passive contact signals to indicate the switch of the valve. Widely used in chemical, petroleum, textile, electric power, food and pharmaceutical, refrigeration, aviation, aerospace, papermaking and other industrial fields.


Product Features

1. The fluid resistance is small, and its resistance coefficient is equal to the pipe section of the same length.

2. Simple structure, small size and light weight.

3. Tight and reliable. At present, the sealing surface material of the ball valve is widely used in plastic, which has good sealing performance, and has also been widely used in vacuum systems.

4. Easy to operate, open and close quickly, just rotate 90° from fully open to fully closed, which is convenient for long-distance control.

5. It is easy to maintain, the structure of the ball valve is simple, the sealing ring is generally movable, and it is more convenient to disassemble and replace.

6. When fully open or fully closed, the sealing surface of the ball and the valve seat is isolated from the medium, and the sealing surface of the pneumatic three-way ball valve will not be eroded when the medium passes through.

7. Wide range of applications, diameters ranging from small to several millimeters, large to several meters, and can be applied from high vacuum to high pressure.


Executive standard

Design BasisGB standardANSI standard
design standardsGB/12237ANSI B16.34
Connection flange sizeGB/9113、JB/T79ANSI B16.5
Experiment and InspectionJB/T9092API 598

Remarks: The structural length and connection size of the series ball valves can be designed and manufactured according to customer requirements.


The main technical parameters

DNDN15~200mm
Connection methodflange
Cylinder configurationAT series, GT series and imported actuator series
Cylinder formDouble acting, single acting (spring return)
Control methodcommutation, shunt
Nominal pressure16, 25bar (please specify when ordering with higher pressure)
Air pressureDouble acting: 4~8bar, single acting: 5~8bar
Medium temperatureW1:-40~180℃  W2:-40~300℃  W3:-30~425℃  W4:-40~425℃
Ambient temperatureStandard:-20~80℃
Body MaterialCarbon steel (C), stainless steel (P4, P6)
Sealing materialPolytetrafluoroethylene (F), para-polyphenylene (PPL), metal hard seal (H), cemented carbide (Y)



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Material of main parts

NOPart NameMaterialNOPart NameMaterial
CP4P6CP4P6
1Right valve bodyWCBZG1Gr18Ni9TiZG1Cr18Ni12Mo2Ti11BushingPTFE.composite bearing
2Nut351Gr18Ni9Ti1Gr18Ni9Ti12GlandWCBZG1Gr18Ni9TiZG1Cr18Ni12Mo2Ti
3GasketPTFE.Graphite metal composite pad13Bolt351Gr18Ni9Ti1Gr18Ni9Ti
4Bolt351Gr18Ni9Ti1Gr18Ni9Ti14Bolt351Gr18Ni9Ti1Gr18Ni9Ti
5BodyWCBZG1Gr18Ni9TiZG1Cr18Ni12Mo2Ti15Connecting bracket1Gr18Ni9Ti1Gr18Ni9Ti1Gr18Ni9Ti
6SeatPTFE. Nylon. Para-polyphenylene. Metal hard seal16Bolt351Gr18Ni9Ti1Gr18Ni9Ti
7Ball1Gr18Ni9Ti1Gr18Ni9Ti1Cr18Ni12Mo2Ti17Connection sleeve351Gr18Ni9Ti1Gr18Ni9Ti
8Stem1Gr131Gr18Ni9Ti1Cr18Ni12Mo2Ti18Pneumatic deviceExtruded aluminum alloy
9GasketPTFEPTFEPTFE19Position indicatorPlasticPlasticPlastic
10PackingPTFE.Flexible graphite

Remarks: Other special sealing materials or special temperatures can also be designed and manufactured according to customer requirements.


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Main external connection dimensions-PN16(16bar)

DN(mm)DimensionsConnection sizeActuator model
LL0L1L2HDD1D2CfN-D
1515072141/15971/83204/2359565461424-14ATD50/ATE63
2016080159/21183/95240/25210575561624-14ATD63/ATE75
2518090211/24895/107257/26511585651624-14ATD75/ATE88
32200100211/24895/107277/312140100761834-18ATD75/ATE88
40220110248/269107/123292/317150110841834-18ATD88/ATE100
50240120248/345107/152325/347165125992034-18ATD88/ATE125
65260130315/409141/172357/3891851451182034-18ATD115/ATE145
80280140345/409152/172368/4002001601322038-18ATD125/ATE145
100320160409/550172/215410/4982201801562238-18ATD145/ATE160
125400190438/600187/240470/5382502101842238-18ATD160/ATE210
150440220550/633215/262556/5912852402112438-22ATD190/ATE240
200550260600/730210/330648/68734029526624312-22ATD210/ATE270


Main external connection dimensions-PN25(25bar)

DN(mm)DimensionsConnection sizeActuator model
LL0L1L2HDD1D2CfN-D
1515072159/21183/95235/2479565461424-14ATD63/ATE75
2016080211/24895/107252/26010575561624-14ATD75/ATE88
2518090248/269107/123265/28911585651624-14ATD88/ATE100
32200100248/315107/141287/312140100761834-18ATD88/ATE115
40220110269/409123/152317/339150110841834-18ATD100/ATE125
50240120345/345123/152325/347165125992034-18ATD100/ATE125
65260130269/345141/172357/3891851451182234-18ATD115/ATE145
80280140315/438152/187400/4252001601322438-18ATD125/ATE160
100320160409/550172/215443/5312351901562438-22ATD145/ATE190
125400190438/600187/240548/5832702201842638-26ATD160/ATE210
150440220550/633215/262628/6653002502112838-26ATD190/ATE240
200550260600/730210/330695/74436031027430312-22ATD210/ATE270

Remarks: According to different valve torque, different air source pressure and different actual working conditions, the relevant external dimensions of the matching actuator will also change accordingly.