![]()
Product Description
Self-operated Control Valve Principle
After the medium entering valve body along the arrow direction, its pressure is decreased due to through valve seat and valve plug, then flow out via the exit. Through the conjunctive pipe behind the valve and condenser, the reduced pressure is led into actuator below the rubber-corrugated diaphragm. The elastic force [in the opposite direction balances the upward pushing force caused by the action of medium pressure to actuator by the spring When the reduced pressure changes, the balance relation is broken, so valve plug moving until the balance is recovered between upward pushing force and elastic force.]The pressure acts not only on up surface of valve plug, but also on outer surface of bottom of the bellows. And the reduced pressure acts on below surface of valve plug as well as inner surface of bottom of the bellows. This kind of pressures balance relationship render the influence of the force caused by pressure difference before and behind the valve on the position of valve plug decreases to minimum.
There are widely used in automatic control of the up-valve or back-valve pressure reduction or stabilization of the fluids such as air,liquid and vapor in various industrial equipment in fields of petroleum, chemical engineering, electric power,metallurgy,food, light textile,machinery manufacturing and residential buildings. With the condenser, can continuous work. at the 350°C steam condition.
Self-operated Control Valve Features
1. No need for any external power source, used fluid adjusted by own energy to regulate automatically.
2. Saving power source, pressure can be adjusted free during working.
3. Quick-opening flow.
4. Flexible operation.
5. Good sealing property.
6. Stable fluid pressure.
7. High regulating precision and low leakage.
Sepecifications
| Item |
Date |
| Nominal Diameter |
DN15-300 |
| Nominal Pressure |
PN1.6-10.0MPA ANSI150-600lb |
| Density temperature |
-40~425ºC |
| Connection type |
Flange |
| Body material |
WCB, CF8, CF8M, CF3M |
| Valve trim material |
304,316,316L, PTFE, PPL |
| Flow characteristic |
ON-OFF |
| Leakage (Hard sealing) |
ANSI Class IV |
| Leakage (Soft sealing) |
ANSI Class VI |
| Pressure adjuating range |
30~6000Kpa |
Applications
![]()
Company Profile
![]()
![]()
![]()
![]()
![]()
Q: Can I get a sample and how do I get it?
A: Yes, the sample is available and please tell us your requirements of the sample and we will quote it for you and help you to order it.
Q: What are your main products?
A: We are a valve and actuator manufacturer with 20 years experience and we could provide ball valve, butterfly valve, check valve, gate valve, globe valve, electric actuator and pneumatic actuator for you. We committed to being your No.1 one-stop valve solution provider.
Q: Do you have any certificates?
A: Yes, we have ISO9001:2015, CE, TUV, SGS and more than 30 patents. Quality is our goal and the certificate is good proof of our quality.
Q: Can I be your distributor?
A: Yes, you can be our distributor. Details please contact us.
Q: What are your payment term and delivery time?
A: We accept TT, Paypal, Western Union, Credit card. The delivery time about 3 to 7 working days.
