Full set of butterfly valve with short pipelines
Nominal diameter : DN500 ~ DN3500
Nominal pressure : PN2.5 ~ PN40
Full state minimum flow resistance coefficient : 0.1
Optional control power supply : AC220V, DC220V, DC110V, DC24V
Certificate: ISO14001 ,ISO9001,OHSAS18001
Flange connection: GB/T 9112~9131
EN1092-1 (other connections on request)
Suitable medium:
clean water, water with sand, sea water, oil etc. non-corrosive fluid（Medium temperature : ≤80 ℃）
Brief Introduction
Full set of butterfly valve usually used in hydro power stations for safety purpose.
including
■main butterfly valve
■hydraulic power station
■expansion coupling
■two ends connection pipeline
■bypass system
■air valve
■draining valve
| Open/ close data | Diameter | <1000 | ≥1000 | |
| Open valve time | 10~60s(adjustable) | 20~120s(adjustable) | ||
| Close valve time | Quick closing | 1.5~15s(adjustable) | 2.5~30s（adjustable） | |
| Slow closing | 2.5~60s(adjustable) | 6~90s（adjustable） | ||
| Valve close degree | Quick closing | 75°±10°（adjustable） | 75°±10°（adjustable） | |
| Slow closing | 75°±10°（adjustable） | 75°±10°（adjustable） | ||
Note: Special requirement is available under request.
- Capable of closing against maximum head and flow through the valve
- Bored to reduce head loss to a minimum and the head loss across the valve is stated and guaranteed.
- Safe emergency closure in case of turbine going to runaway speed (failure of governor), with the help of counterweights.
- Opening operation of the MIV carried out by pressure oil operated servo motors. The pressure oil will be supplied from the governor OPU.
- Normal position of valve disc in open position is horizontal and in closed position vertical. The valve is kept either in fully open or fully closed position depending upon operating requirements.
- Normally the opening and closing of the MIV will be done under balanced water conditions. However, the valves is also designed to close in the shortest possible time under unbalance condition for the expected water flow considering the bursting of the largest tap-off among various tap-offs on the penstock.
- Complete along with servomotors, counter weights, lever arm assembly, bypass valve, differential pressure switch, electrical control panel, upstream/downstream connecting pipe pieces for joining with the penstocks, dismantling joint etc. required to make a complete unit.
Supply Range
The Scope of Work covers the detailed requirements for the Design, Manufacture , QA, QC, Shop Assembly and Shop Testing, Painting, Packing, Transportation .
On the other side, the enduser or the contractor will pick up the goods at the destination port, delivery at site, storage and preservation, installation, erection, testing and commissioning of the valves .
Valve accessories are also play an important role in our industry.
Advantages
Aftersale Service
For decades, based on our extensive know-how and continuous innovation of products and solutions, we are driven to fulfill this commitment to all our current and future customers.
Our Quality Control Engineers strictly monitor the production at every stage, to ensure a consistently high level of quality, we offer 12 months quality gurantee for each project.
Our 24/7 assistance, customized to any site or remote needs, ensures every client get our satisfactory response.
Installation supervision involves the mechanical and electrical setup of the valve. Commissioning focuses on system integration and testing. We can also provide paid services when necessary.
Troubleshooting is a form of problem solving, kindly pls offer the photos, videos and the operation steps to us, our service department will check and give support asap.
Our service engineer will train the clients’ operator step by step according to the product manual procedures and maintenance steps etc.
We guarantee to supply high-quality and reliable original parts asap by international courier or by air.
Company Video
Welcome to Zhengzhou Pump Valve Co., we are one of the leading manufacturer and solution provider in industrial valves in thermal /hydro power plants, dams ,oil & gas, metallurgy, petrochemical, desulfurization ,water treatment industries etc.
Please watch our company video to have a general idea.
Resource
In order to shorten the communication time ,here attached a company catalog file . You can check our factory information, production lines etc
This is our company’s quality assurance and control process, which confirms that our products are traceable, product quality is controllable, and customer service is satisfactory.
Zhengzhou Pump Valve is top 10 leading manufacturer and solution provider of industrial valves in China founded in 1995, mainly used in power plants, dams ,oil & gas, metallurgy, petrochemical, water treatment etc.
The company boasts a production area of over 30,000 square meters, equipped with advanced facilities, including large CNC vertical lathes and supporting equipment for external processing.
For more information, kindly pls contact us for details.
yes, we offer OEM/ODM service, we support the customized logo, size, package, etc.
We offer 18 months warranty service for factory delivery date by free, and we also supply the valve wearable parts.
Yes, we can share some reference list and project photos after request.
Of course, we offer the inspection test plan and test report after testing before delivery.
- 30% T/T down payment and 70% T/T balance payment after positive test and before delivery.
- 100% irrevocable L/C at sight,
- Others for negotiation