Electronics Production Machinery
Description
Chemical Engineering Self Regulated Valve Single Seat Cage Structure Type
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Self-operated pressure single-seat control valve
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ZZY Series of Self-operated Control Valve there is no need for any external power source, only used fluid own energy to adjusted the valve opening automatically, and pressure set value ?can be adjusted freely during on working condition. With advantages of quick-opening flow characteristic, flexible operation, good sealing performance, stable fluid pressure, high regulating precision level and low leakage etc.It is widely used in automatic control of the inlet-valve and outlet-valve pressure reduction, stabilization of the fluids, such as air, liquid and vapor in various industrial equipments, like industries in petroleum, chemical engineering, electric power, metallurgy, food, light textile, machinery manufacturing and residential buildings etc. With the condenser, it can continuous on working under 350℃steam condition.
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Characteristics
1,Without any external driving?energy,?low cost, Suitable for explosive?environment；
2,Simple structure, little maintenance work;
3,The set point?can be adjusted and the?range is wide, convenient for the user to do continuous?adjustment;
4,Body?pressure,?convenient pipe installation
5. Using the pressure?balance?valve?structure, no packing,?frictionless?movable?components,?sensitive control,?high control precision.
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Specifications and technical parameters
1. Main technical parameters of ZZY standard KV﹥7?????????????????????????????????????? ?Table 1
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DN(mm) | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
Rated flow coefficient Kv | 11 | 17 | 29 | 43 | 70 | 110 | 169 | 275 | 440 | 690 | 960 | 1300 |
Rated travel L(mm) | 10 | 14 | 20 | 25 | 40 | 60 |
Actuator type | Diaphragm type(Set pressure≤0.7MPa),Cylinder type(Set pressure＞0.8MPa),Bellows type |
Actuator | Set point KPa | 100 | 200 | 300 | 700 | 1000 | 1500 | 2000 | 3000 | 4000 |
Effective area cm2 | 400 | 280 | 200 | 100 | 71 | 71 | 50 | 33 | 28 |
PN(MPa) | 1.6? 4.0? 6.4? 10.0 |
Inherent flow characteristic? | Quick open |
Action type | Press to close (control outlet), Press to open (control inlet) |
Structure type | Single seat, Cage |
Inherent?adjustable ratio R | 30 |
Reduction ratio | 10:1～1.25:1 |
Medium temperature (℃) | General＜120℃,With?the condenser≤350℃ |
Regulation accuracy (%) | ±10 |
Allowable leakage | Soft sealing | Ⅵ,Zero leakage |
Hard sealing | Ⅳ,Ⅴ |
Flange connection | PN1.6MPa according to HG/T20592-2009 RF,Raised surface PN≥4.0MPa according to HG/T20592-2009 FM,Female surface? |
Pressure regulating range (KPa) | 30～60,50～100,80～200,120～350,250～500,400～800 700～1000,900～1400,1200～1700,1500～2000,1800～2400 2200～2800,2600～3200,3000～3600,3500～4000 |
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2. Main technical parameters of ZZY standard??? KV≤7???????????????? ??????????????????????Table 2
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DN(mm) | 15?? 20?? 25 |
Seat diameter dn(mm) | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 15 | 20 |
Rated flow coefficient Kv | 0.02 | 0.05 | 0.08 | 0.12 | 0.2 | 0.32 | 0.5 | 0.8 | 1.2 | 2.0 | 3.2 | 7 |
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Note:1, Production can be according to customers’ special requirements;
? 2, Flange can be produced according to ANSI,JIS, etc.;??
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Zhejiang yongsheng technology co.,ltd.
Automatic Control Valve,Pipeline Ball Valve,Metal Seated Ball Valve
Address: Lushan Industrial Park,Fuyang,Hangzhou City,Zhejiang Province,China,
Hangzhou, Zhejiang
China, 310000
Tel: 86-571-63168258
Fax: 86-571-63160567
