Home > Offer to Sell > Machinery and Equipment > Pump and Valve > The 30D03Y/30D03R self-operated differential pressure control

The 30D03Y/30D03R self-operated differential pressure control

Inquiry
  Post Date: Oct 09,2014
  Expiry Date: Oct 23,2014
  Detailed Description: Cas No. :30D03Y/30D03R Quantity: 9001、ISO4001、CE
Specs:1pc
Price:50-200 doll USD Metric Tons
Summary
The30D03Y/30D03Rself-operated differential pressure control valve is composed of the control valve ，actuator and a spring used for pressure setting。It is suitable for controling differential pressure in the pipes of non-corrosive liquids, gases and steams. when the valve is closed
The main features are as follows:
1.It has the pressure balancing function with high sensitivity.
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.
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) 80 250 630
Pressure setting range 0.1~0.6
0.05~0.3 0.015~0.15
0.01~0.07 0.005~0.035
Minimum differential pressure that ensures normal work of the pressure valve ≥0.04 ≥0.01 ≥0.005
Allowable maximum differential pressure between the upper a nd lower diaphragm chambers 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 cover 6 Diaphragm
7 Spring 8 Adjusting nut 9 Bellows 10Balanced diaphragm 11Charging 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.

  CAS Registry Number:

30D03Y/30D03R

  Company: Zhejiang REOWO Automatic Instrument Co.     [ China ]        
  Contact: Johnny
  Tel: 86-021-52805855
  Fax:
  Email: salec@reowo.com
Disclaimer statement:The information and data included above have been realized by the enterprises and compiled by the staff, and are subject to change without notice to you. The Chemnet makes no warranties or representations whatsoever regarding the facticity, accuracy and validity of such information and data. In order to ensure your interest, we suggest you chose the products posted by our gold suppliers or VIP members.