Emergency trip valve
| DN | 300mm~2400mm | |
| PN | 0.25~4MPa | |
| Pressure test | seat | 1.1*PN |
| shell | 1.5*PN | |
| Medium | water | |
| Working pressure | 0.8*PN | |
| Flow rate | 1.0~4.5m/s | |
Brief Introduction
The emergency trip valve mainly composed by :main valve( including counterweight device), velocity sensor part (velocity sensor), tube parts, hydraulic system (including the buffer cylinder, oil and oil passage). The results are shown in figure 1. are generally set in underground cellar with pool outlet of underground manhole or distribution pipelines wells. When the downstream distribution pipeline broken and large leak, it can emergency shutoff upstream water distribution pipelines, to minimize the losses, protect people’s lives and property safety, and not wasting water .
When the downstream pipeline substantial leakage due to various causes, because normal water flow velocity value by the spring mechanism , at this time the flow velocity in the tube will greatly exceed the normal hydraulic fluid. At this time the flow velocity sensing rod actuator switching oil passage circuit (see Figure 2), the circuit switched to the main valve closed loop. Under the action of the counterweight, the main valve disc will be closed according to the speed and the two stages of the oil cylinder’s fast and slow stroke, so as to shut off the upstream water quickly and avoid the occurrence of water hammer. When the main valve is completely closed. Use manual hydraulic pump valve ,which is located in the side of the manual operation or portable electric pump, to fully open again.
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