Passive Components
Description
Oil / Water / Steam Automatic Control Valve with Cast Stainless Steel JIS DIN GB
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Pneumatic diaphram intelligent high differential pressure control valve
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YSIQ(D)70 Series of Intelligent High DP Control Valve mainly used for power plant high pressure boiler occasions which feed water need to be regulated, in case cavitation, cavitation erosion happened when valve is on small opening.
Working principle:
??? The equipped smart positioner will convert to valve required settings when receive normal signal of electricity or signal of computer. Then the pneumatic actuator linear displacement will change to angular displacement by valve special connections, and tested by position transducer then feedback to microprocessor.
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??? The microprocessor will compare the actual valve feedback with original settings and tested if there is any deviation. It will output pulse width modulation command(PWM) to piezoelectric valve according to the the size and direction of deviation. The piezoelectric valve will regulate the input or exhaust gas under the control command.
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Main Parts Materials????????????????????????????????????????????????????????????????Table 1
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Item | Part Name | Material |
1 | Body | WCB | WC6 | CF8 | CF8M |
2 | Seat | 304,316/Partial Stellite | 316/Partial Stellite |
3 | Plug | Metal Sealing | 304,316/Partial Stellite | 316/Partial Stellite |
Soft Sealing | 304,316+Reinforced Teflon | 316+Reinforced Teflon |
4 | Cage | 304,316 | 316 |
5 | Guide Sleeve/Silencing Cover | 304,316 | 316 |
6 | Stem | 304,316 | 316 |
7 | Bonnet | WCB | WC6 | CF8 | CF8M |
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*Above is the common materials,the specific grades take the contract as a standard.
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Specification&Technical Parameter???????????????????????????????????????????????????Table 2 ?????????????????????????
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?????? Type | Pressure Balanced Low Noise |
Nominal Diameter | DN40～DN400(1-1/2”～16”) |
Nominal Pressure | PN16,25,40,64,100(150lb,300lb,600lb) |
Flow Characteristic | Equal Percentage, Linear |
? Rangeability | 50﹕1 |
Bonnet Form | Standard Type:Cast Steel :-20～250℃?? Stainless Steel:-40～250℃ |
Low-Temp. Type:Cast Stainless Steel:-60～-100℃,-100～-200℃,-200～-250℃ |
Seat Leakage | ANSI Ⅳ,V |
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Main Performance Index????????????????????????????????????????????????????????????Table 3
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No. | Item | Standard Type | Fin-Extension Type, Low-Temp. Type |
1 | Basic Error＜(%) | ±1 | ±2.5 |
2 | Hysteresis＜(%) | 1 | 2.5 |
3 | Dead Band＜(%) | 0.4 | 1 |
4 | Start &End Deviation＜(%) | ±1 | ±2.5 |
5 | Rated Travel Deviation＜(%) | +2.5 | +2.5 |
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Note: Performance index of this production is higher than GB/T4213-2008.
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Flow Characteristic???????????????????????????????????????????????????????????????????Table 4
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Seat Diameter DN(mm) | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 |
Rated Kv | Linear | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 690 | 990 | 1430 | 1980 | 2750 |
EQ% | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | 900 | 1300 | 1800 | 2500 |
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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
