VALVE

  Butterfly valves   are a great (and less expensive) alternative to globe and other control valves in applications where 1-2% accuracy is acceptable. Process conditions will dictate whether a resilient seated or high performance butterfly valve should be selected. A resilient seated butterfly valve is the most economical choice. If pressures and temperatures are not extreme, this type of valve should work just fine. If pressure and temperature exceed the limits of a resilient seat, a high performance butterfly valve is necessary.  FEIDA Double Offset  High Performance Butterfly VALVE  would perctly solved this issue. FEIDA VALVE is the top ranking  China double offset butterfly valve manufacture . The annual output of high performance butterfly valve is more than 100,000,000 set. The  API 607 fire safe high performance butterfly valve  is also in FEIDA VALVE product range. Our fire safe butterfly valve is certificated by American Petroleum Instit...

  FEIDA VALVE is the top ranking  Chi na  double offset butt erfly valve  man ufacturer  aslo a top ranking   Stainless Steel Resilient Gate Valve manufacture r . The annual output of high performance butterfly valve and stainless steel soft seated gate valve is more than 100,000,000 set. The API 607 fire safe high performance butterfly valve is also in FEIDA VALVE product range. Our fire safe butterfly valve is certificated by American Petroleum Institute (API) according to API 607 standards. FEID AVALVE stainless steel resilient gate valves are designed with built-in safety in every detail. The wedge is fully vulcanized with FEID AVALVE’s own drinking water approved EPDM rubber compound. It features an outstanding durability due to the ability of the rubber to regain its original shape, the double bonding vulcanization process and the sturdy wedge design. The triple stem seal system, the high strength stem and the thorough corrosion protection safeguard t...

  Compare to ball valve, FEIDA  VPSA/PSA  butterfly valve  is better than ball valve for sure. Please see the listed excellent feature following: 1. Long service life, open/close 1 million times 2. Super reliable sealing performance: bi-directional sealing zero bubble 3. Patent seat design 4. Vacuum service ability 5. Available fully rated to class 2500lb 6. Anti-clout device design 7. Fire-safe design optional 8. Excellent flow and throttling characteristics covering services from cryogenic to high temperature Comparison to Ball valve 1. Double offset structure design, the disc is easy to take off from the seat during CLOSE to OPEN. 2. Lower torque than ball valve, so the cost of actuator will much more lower than the ball valve 3, Smaller size, the small size, the light mass will be a lower cost of valve with the same piping internal dimention. 4. longer life cycle 5. ON/OFF operating time is less than 1.5 second. 6. Maximum 30 operating within 1 minute. FEIDA VALV...

  Before the  resilient seated gate valve  was introduced to the market, gate valves with a metal seated wedge were widely used. The conical wedge design and angular sealing devices of a metal seated wedge require a depression in the valve bottom to ensure a tight closure. Herewith, sand and pebbles are embedded in the bore. The pipe system will never be completely free from impurities regardless of how thoroughly the pipe is flushed upon installation or repair. Thus, any metal wedge will eventually lose its ability to be drop-tight. A resilient seated gate valve has a plain valve bottom allowing free passage for sand and pebbles in the valve. If impurities pass as the valve closes, the rubber surface will close around the impurities while the valve is closed. A high-quality rubber compound absorbs the impurities as the valve closes, and the impurities will be flushed away when the valve is opened again. The rubber surface will regain its original shape securing a drop-ti...

  Difference Between Butterfly Valves and Gate Valves Gate valves As the name implies, the main function of a valve is as a gatekeeper. The gate is the main part of gate valves. A movable gate within the valve allows flow or blocks it. This movable gate is controlled by a mechanical assist such as a screw or lever, which lifts or lowers the gate within. Gate valves come in many shapes and sizes but tend to be large. Think of the valves controlling flow of water in main water supply pipes. In spite of their sometimes prodigious size, gate valves are designed to be controlled by a single individual. Butterfly valves A close cousin of the gate valve, and an ingenious variation, a butterfly valve can also come in many shapes and sizes. Such a valve also functions by using an internal gate. The difference between this and a gate valve is in the way the gate operates within the valve. Unlike the gate valve, the gate within the butterfly valve remains fixed and swivels around an internal ...

  Simultaneous construction with hydropower is more labor-saving When is the best time to install central air conditioning in the decoration site? The best is to construct central air conditioning and water and electricity at the same time. The purpose of this is to make it easier for the workers to coordinate. In addition, the power cord of the central air conditioner should be arranged by the decorating company. Generally, the opening on the beam is made by the designated personnel of the new house property. It's thankless to install the light strip Unless  floor heating  is installed in the home, it is best not to install light strips in the air outlet of the central air conditioner, because this will affect the heating effect of the central air conditioner, and the cost is high, so that the original 45° downward air outlet has to be changed to 90°. The hot air will only circulate on a parallel surface and it is difficult to blow down. Installing the top corner line ma...

  Among all types of valves, there is a particular one with the most beautiful name—the   butterfly valve . How did the name come from? In answering this question, we could use analogy. For example, the ball valve looks like a ball, so can we guess that the butterfly valve looks like a butterfly? Well, it seems a little funny, but I have to say: “Bingo, right answer!” The butterfly valve is a regulating valve with simple structure, and it can be used for switching control of a low pressure pipeline medium. The opening and closing member (valve or disc) of the butterfly valve is a disc that rotates around the valve shaft to open and close. In the cylindrical passage of the butterfly valve body, the disc rotates about the axis to achieve flow control. The valve is fully open when the disc reaches 90°, and changing the angle of the disc can adjust the flow of the medium. When the butterfly valve is fully open, it has a small flow resistance; when it is between about 15° and 70°, ...