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30D02Y/R self-operated (before-valve) pressure control valve
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| Post Date: | Oct 09,2014 |
| Expiry Date: | Nov 08,2014 |
| Detailed Description: |
Cas No. :30D02Y/R
Quantity: 9001、ISO4001、CE Specs:1pc Price:50-200 doll USD Metric Tons Payment Method: T/T Summary The 30D02Y 30D02R self-operated (before-valve) pressure control valve is composed of the control valve, actuator and a spring used for pressure setting. It is suitable for controlling before- valve pressure in the pipes of non- corrosive liquids, gases and steams. When the before-valve pressure rises, the control valve is opened. The main features are as follows: 1.It has the pressure balancing function with high sensitiity. 2.Low noise ,reliable performance, free of maintenance 3.The standard modular design is adopted. 4.Various combined controls can be carried out through the assemblies. Technical parameters and performances Body DN 15、20、25、32、40、50、65、80、100、125、150、200、250mm PN Class150、300 Flange standard ANSI、JIS、DIN GB JB(special standards can be offered according to user requirements) Body material WCB、CF8、CF3、CF8M、CF3M Plug material Hard seal Stainless steel (304、316、316L) Soft seal Stainless steel embedded with rubber ring Pressure balancing Stainless steel bellows (DN15~125), balanced diaphragm (DN150~250) Actuator Effective area (cm2) 32 ※ 80 250 630 Pressure setting range 1.0~1.6 0.3~1.1 0.1~0.5 0.05~0.25 0.015~0.12 0.01~0.06 0.005~0.035 Minimum differential pressure that ensures normal work of the pressure valve ≥0.05 ≥0.04 ≥0.01 ≥0.005 Allowable maximum differential pressure between the upper a nd lower diaphragm chambers 2.0 1.25 0.4 0.15 Material Diaphragm cover: galvanized steel sheet; Diaphragm: EPDM or FKM with fiber Control pipeline connection Copper pipe or steel pipe Φ10X 1(mm); Ferrule connection: R1/4" Note: ※The pressure setting range corresponding to the effective area does not apply to valves with DN150-250. Performance Set value error ±8% Allowable leakage (under stipulated testing conditions) Hard seal 4×0.01% valve rated capacity Soft seal DN15~50 DN65-DN125 DN150~250 10 bubbles/ min 20 bubbles/min 40 bubbles/min Structural figure 1Body 2Seat 3 Valve shaft 4 Bonnet 5 Diaphragm 6 Diaphragm 7 Spring 8 Adjusting nut 9 Pressure pipe 10 Bellows 11 Balanced diaphragm 12 Charging valve Allowable working temperature DN 15~125mm 150~250mm seal type Hard seal ≤150℃ ≤140℃ Cooling tank≤200℃ Cooling tank and extension ≤200℃ Cooling tan k and heat sink ≤350℃※ Cooling tank and extension ≤300℃※ Soft seal ≤150℃ Note: ※It indicates the allowable working temperature is valid only when the medium is steam and the body with PN40 shall be adopted w hen the temperature resistance is 350℃. Rated flow coefficient, noise measuring coefficient, allowable differential pressure DN 15 20 25 32 40 50 65 80 100 125 150 200 250 Rated flow coefficient 4 6.3 8 16 20 32 50 80 125 160 280 320 450 Noise measuring coefficient Z value 0.6 0.6 0.6 0.55 0.55 0.5 0.5 0.45 0.4 0.35 0.3 0.2 0.2 Allowable differential PN16 1.6 1.5 1.2 1 pressure (Mpa) PN40 2 Working principle After throttling by the plug and seat, the before-valve pressure P1 of the process medium is changed into the after-valve pressure P2. Through the control pipeline, P1 is input to the upper diaphragm chamber of the actuator and acts on the top disc. The acting force produced balances the reacting force of the spring, determining relative positions of the plug and seat and controlling the before-valve pressure. W hen the before-valve pressure P1 increases, the acting force of P1 that acts on the top disc will increase accordingly. At the time, the acting force on the top disc is higher than the reacting force of the spring to make the plug move away from the seat, until the acting force on the top disc balances the reacting force of the spring. At the time, the flow area between the plug and seat is increased, the flow resistance becomes lower and P1 is reduced to the set value. Likewise, when the before-valve pressure P1 decreases, the acting direction is reverse to the above. This is the working principle during the control of before-valve pressure. When it is necessary to change the set value of before-valve pressure P1, please adjust the adjusting nut. I. Dimensions and weight of control valve DN (mm) 15 20 25 32 40 50 65 80 100 125 150 200 250 L (mm) 130 150 160 180 200 230 290 310 350 400 480 600 730 B (mm) 212 212 238 238 240 240 275 275 380 380 326 354 404 Weight (Kg) 6.2 6.7 9.7 13 14 17 29 33 60 70 80 140 220 B1(mm) — — — — — — — — — — 630 855 1205 Weigh(Kg) — — — — — — — — — — 140 210 300 II. Dimensions and weight of actuator Effective area (cm ) 32 80 250 630 R (mm) 172 172 263 380 H (mm) 435 430 470 520 Weight(Kg) 7.5 7.5 13 28 |
| CAS Registry Number: | 30D02Y/R |
| Company: | Zhejiang REOWO Automatic Instrument Co. [ China ] |
| Contact: | Johnny |
| Tel: | 86-021-52805855 |
| Fax: | |
| Email: | salec@reowo.com |
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