Self Operated Control Valve
Pilot type differential pressure valve
Pilot type differential pressure valve
Product feature
ZZYVP Pilot self-operated pressure regulator can work without electricity and air supply.ZZYVP Pilot self-operated pressure regulator is a kind of energy-saving pressure control valve which utilizes self-pressure changes of adjusted medium to realize automatic adjustment and constant value of pressure after valve.ZZYVP Pilot self-operated pressure regulator applicable medium: non-corrosive gas.
ZZYVP Pilot self-operated pressure regulator can set target pressure on the director during operation, so it is convenient , quick ,labor-saving and time-saving.ZZYVP Pilot self-operated pressure regulator has Sensitive reaction, can detect minimum pressure and pressure changes(e.g.50mm water column pressure),decompression ratio is high, maximum decompression ratio is 100:1when the pressure before valve is below 8bar.
ZZYVP Pilot self-operated pressure regulator is twice as much as ZZY self operated control valve,specially applicable for gas decompression occasion, where pressure before valve is 1~8bar and the pressure after valve is below 15KPa.
Pilot self operated pressure regulator material list
Pilot self operated pressure regulator technical parameter
Pilot self operated pressure regulator structure drawing
Pilot self operated pressure regulator working principle
1.At the beginning, main valve spool of ZZYVP Pilot self-operated pressure regulator keeps closed under spring11 action force. Director 08 keeps open under spring 17 action force.
2. The medium flows into control valve under arrow direction, through relief valve 06, flow to director 08, through director 08 and throttle valve 13,flow to actuator 07 diaphragm chamber below. The pressure from actuator07 diaphragm chamber below is rising. The main valve will open under pressure. The medium flows into the valve,through pressure tap 09 and 21,then flow into the actuator07 diaphragm chamber above and director 08 diaphragm chamber above.
3.When the pressure P2 after valve is rising, the pressure P4 acting on the actuator 07 diaphragm chamber above is rising, main valve opening degree is reducing and pressure after valve is reducing(initial adjustment). Meanwhile,the pressure P6 acting on the director 08 diaphragm chamber above is rising and director 08 opening degree is reducing. The pressure P5 into actuator 07 diaphragm chamber below is reducing. The ZZYVP Pilot self-operated pressure regulator main valve opening degree is reducing further and the pressure after valve keeps reducing(fine adjustment).
4.When the pressure P2 after valve is reducing, the pressure P4 acting on the actuator 07 diaphragm chamber above is reducing.Main valve opening degree is increasing,and pressure after valve is rising(initial adjustment). Meanwhile, the pressure P6 into director 08 diaphragm chamber above is reducing , director 08 opening degree is increasing, and pressure P5 into the actuator 07 diaphragm chamber below is rising. The main valve opening degree is increasing further and the pressure after valve keeps increasing(fine adjustment).
5.The main valve spool of ZZYVP Pilot self-operated pressure regulator and director 08 won’t stop working until it reaches the set value. At this moment, the pressure after valve is set value, dynamic decompression can be realized.
FAQ
What are your prices?
Our prices are subject to change depending on supply and other market factors. We will send you an updated price list after your company contact us for further information.
Do you have a minimum order quantity?
Yes, we require all international orders to have an ongoing minimum order quantity. If you are looking to resell but in much smaller quantities, we recommend you check out our website
Can you supply the relevant documentation?
Yes, we can provide most documentation including Certificates of Analysis / Conformance; Insurance; Origin, and other export documents where required.
What is the average lead time?
For samples, the lead time is about 7 days. For mass production, the lead time is 20-30 days after receiving the deposit payment. The lead times become effective when (1) we have received your deposit, and (2) we have your final approval for your products. If our lead times do not work with your deadline, please go over your requirements with your sale. In all cases we will try to accommodate your needs. In most cases we are able to do so.
What kinds of payment methods do you accept?
You can make the payment to our bank account, Western Union,LianlianPay or PayPal:
30% deposit in advance, 70% balance against the copy of B/L.
What is the product warranty?
We warranty our materials and workmanship. Our commitment is to your satisfaction with our products. In warranty or not, it is the culture of our company to address and resolve all customer issues to everyone’s satisfaction
Do you guarantee safe and secure delivery of products?
Yes, we always use high quality export packaging. We also use specialized hazard packing for dangerous goods and validated cold storage shippers for temperature sensitive items. Specialist packaging and non-standard packing requirements may incur an additional charge.
How about the shipping fees?
The shipping cost depends on the way you choose to get the goods. Express is normally the most quickest but also most expensive way. By seafreight is the best solution for big amounts. Exactly freight rates we can only give you if we know the details of amount, weight and way. Please contact us for further information.
Contact us
For inquiries about product technology, product purchases,catalogs, and quality.