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Pneumatic Cage Guided Single Seated Globe Control Valve

CATEGORY AND TAGS:
Globe Control Valve,Pneumatic Globe Control Valve

Product Name:single seated control valve;
Valve Structure:2-way globe valve;
Actuator Type:multi-spring pneumatic diaphragm actuator;
Valve Type:linear motion control valve;
Nominal diameter:DN6~DN300;
Nominal pressure:PN16~PN63;
反对nection Type:flange—FF,RF,MF,RTJ;

enquiry
  • Specifications
  • Dimensions

Pneumatic Cage Guided Single Seated Globe Control Valve

Cage guidedsingle seated control valveis used to control fluid flow,pressure and high load conditions.The valve body of thissingle seated globe control valveis compact in structure,and the fluid passage is S streamlined,allowing for large circulation capacity , wide adjustable range,and high flow characteristic accuracy.The guide portion of the plug has a large guiding area and is characterized by strong anti-vibration performance.The seat sealing performance is in accordance with IEC or GB standards. This气动single seated control valveis equipped with a multi-spring type diaphragm actuator. The structure is compact and the output force is large. The single seated control valve is widely used in the pipeline occasions requiring high shut-off performance,low temperature and high pressure .Due to the wide range of materials and the variety of design forms,these valves can be used in different industrial fields (such as chemical,electric power,paper, food,metallurgy,mining,etc).

The Design Characteristics of Pneumatic Single Seated Control Valve:

1. The valve seat adopts the snap-in structure,which can avoid the defect of the snagging type.When the upper cover is pressed,the valve core and the valve seat are automatically centered, and the installation and disassembly is simple and convenient. Even in the case of severe corrosion, the valve seat is easily removed for maintenance.
2. The valve core and the valve stem adopt an integrated structure, which avoids the defects of the plug-in type. Even in the case of high pressure difference,the stability of the valve stem can be ensured;
3. Balanced and unbalanced valve plugs have high cut-off sealing performance in the entire flow and characteristics range;
4. Metal seals and soft seals have the same flow coefficient;
5. The balance valve plug is used in the globe control valve to withstand a relatively large allowable pressure difference;
6. Special surface treatment of the valve inner parts——polishing,nitriding and Stellite resurfacing welding to extend the service life of the regulating valve,the workpiece is more reliable;
7. Adjustable ratio is to 50:1,and 100:1 can also be customized;
8. Use high grade non-asbestos seal or bellows seal;
9. Multi-spring pneumatic actuator can realize direct acting and reverse acting.The spring range can be adjusted without adding other parts. The direct acting actuator can realize the air-to-close operation,and the reverse acting actuator can realize the air-to-open operation.
10. It can be equipped with pneumatic actuator, electric actuator and electro-hydraulic actuator.

Structure and Parameters of Pneumatic Single Seated Control Valve:

Parameters & Property of Pneumatic Single Seated Control Valve:

Body/Bonnet : WCB,LCB,WC6,WC9,CF8,CF8M,CF3, CF3M
Plug Material: F304,F316,etc
Seat Material: F304,F316,etc
Resurfacing Welding: tungsten carbide,soft seal
Stem Material: 17-4PH ASTM A276 F304
Upper Bonnet Type 1.Standard Type:-17~+230℃
2.Extended ⅠType:-45~+17℃ or more than 230℃(heat dissipation type)
3.Extended ⅡType:-45~-100
4.Extended Ⅲ Type:-196~-100
5.Bellows sealing type(forming type/welding type)
6.Steam Jacket Type
Body Type staight-way/angle/jacket insulation
Packing: PTFE/asbestos/graphite
Gasket: Flange(RF,FM)
Leakage Class: 1.Metal seal:ANSI B16.104 Ⅳclass
(ANSI B16.104Ⅴ类是可用的)
2.Soft seal:ANSI B16.104 Ⅵ class
Flow Characteristic: HG20592-2009,ANSI B16.5
反对nection Type: flange(RF/FM),butt welding

Flange Connection

Type Standard:

HG20592-2009,ANSI B16.5
Rangeability: 50:1 (100:1 can be customized)
Actuator:

气动diaphragm/pneumatic piston/electric/

电动液压执行器

Actuator Technical Parameters of Pneumatic Single Seated Control Valve:

Actuator Type Pneumatic Diaphragm Type
Air Supply Pressure 140KPa 340KPa
Spring Range (20-100KPaG) (80-240KPaG)
Electric Connection NPT1/4、NPT3/8
Directing Acting Valve close when air pressure increasing
Reverse Acting Valve open when air pressure increasing
Backlash <1.5% (with positioner)
Dead Zone <1% (with positioner)
Temperature -10〜70°C
Painting Color Light green
Accessories Positioner,solenoid valve,limit switch,filter pressure

reducing valve,lock valve,air control valve

Rated Cv and Travel of Pneumatic Single Seated Control Valve:

DN Seat Size Rated Cv(EQ%) Rated Cv(Quick Open Linear) Travel
20 6 0.32 16
8 0.8 16
10 1.6 16
15 4 16
20 6.3 10 16
25 6 0.32 16
8 0.8 16
10 1.6 16
15 4 16
20 6.3 10 16
25 10 16 16
32 32 17 25 16
40 40 24 35 25
50 50 44 55 25
65 65 68 85 40
80 80 99 135 40
100 100 175 210 40
125 125 275 345 60
150 150 360 466 60
200 200 640 735 60
250 250 960 1000 100
300 300 1300 1500 100

Required Information When Ordering Pneumatic Single Seated Globe Control Valve:

1.Working medium and temperature,medium density;
2.Pre-pressure and back-pressure of thesingle seated control valve;
3.max/normal/min flow for the气动single seated control valve;
4.Connection method,operation mode,fault location;
5.Pipe diameter/ nominal diameter/ nominal pressure;
6.Accessories: positioner,solenoid valve,filter pressure reducer, limit switch,lock valve, etc.;

Dimensions of Pneumatic Single Seated Control Valve

DN L H H1 H2 A M
PN16/25 PN40 PN63 Standard

Type

Extended I

Type

Extended II

Type

Bellows

Type

15/20 184 194 206 130 240 300 270 95 35 52.5 M12 x 1.25
25 184 197 210 140 250 310 280 95 35 57.5
32 200 210 220 155 265 325 295 95 35
70
40 222 235 251 170 280 340 340 95 35 75
50 254 267 286 180 290 350 350 95 35 82.5
65 276 292 311 220 350 410 475 110 45 92.5 M16 x 1.5
80 298 317 337 230 360 420 485 110 45 100
100 352 368 394 245 375 435 500 110 45 117.5
125 410 425 440 295 455 525 645 135 55 140 M20x1.5
150 451 473 508 325 485 555 675 135 55 160
200 600 600 650 385 545 615 735 135 55 210
250 673 708 752 470 650 725 950 170 60 260 M24x1.5

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