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|Application::||Condensate Treatment, ECO, Food And Medicine, Air Separation Systems||Material::||Casting|
|Temperature Of Media::||-40℃ ~ +200℃||Pressure::||Low Pressure, PN 10-PN 20(Class 150)|
|Power::||Manual, Electric, Pneumatic, Hydraulic, Solenoid||Media::||Acid,base|
|Valve Body::||Carbon Steel And Stainless Steel,ASTM A216 WCB,ASTM A351 CF8/CF8M||Valve Seat::||PTFE,RPTFE|
|Valve Disc/ Trim::||ASTM A351 CF8, ASTM A351 CF8M||Temperature::||-40℃-+200℃|
|Product name||Environmental double eccentric check wafer type butterfly valve|
|Flow medium||gas,oil,water,sour,highly saline,corrosion|
|Medium temperature||Normal Temperature -29-200℃|
|Pressure||Low,Medium Pressure 0-600LB|
|Application||Power plant condensate treatment, environmental protection, food and medicine, air separation|
Parts and Material:
|Body||ASTM A216 WCB|
|ASTM A351 CF8|
|ASTM A351 CF8M|
|Bushing||AISI 316 with PTFE|
|Stem||ASTM A276 316
ASTM A564 630 17-4PH
|Disc||ASTM A351 CF8
ASTM A351 CF8M
The rubber elastomer in butterfly valve in continuous use, will produce tear, wear, aging, perforation and even off phenomenon.However, the traditional hot vulcanization process is difficult to meet the needs of on-site repair, which requires the use of special equipment and consumes a lot of heat and electricity, which is time-consuming and laborious.Nowadays, polymer composites are gradually adopted to replace traditional methods, and fushi blue technology system is the most widely used.Its products have superior adhesion and excellent anti-wear, anti-tear performance, ensure that after repair to reach or even exceed the service cycle of new parts, greatly reducing downtime.
Installation and maintenance
1. During installation, the disc should stop at the closed position.
2. The opening position should be determined according to the rotation Angle of the butterfly plate.
3. For butterfly valve with bypass valve, the bypass valve should be opened before opening.
4, should be installed according to the manufacturer's installation manual, heavy butterfly valve, should set a solid foundation.
Construction and installation points
1. Installation location, height and direction of inlet and outlet must meet the design requirements, and the connection shall be firm and tight.2) all kinds of manual valves installed on the insulation pipe shall not downward handle.
2. Appearance inspection must be conducted before installation of the valve, and the nameplate of the valve should conform to the current national standard GB 12220 "general valve mark".For the valve whose working pressure is greater than 1.0 MPa and which plays the role of cutting off the main trunk pipe, the strength and strict performance test should be carried out before installation, and it can only be used after qualified.During the strength test, the test pressure shall be 1.5 times of the nominal pressure, and the duration shall not be less than 5min. It is qualified that the valve shell and packing shall have no leakage.In strict test, the test pressure is 1.1 times of nominal pressure.The test pressure shall meet the requirements of GB 50243 standard for the duration of the test, and shall be qualified with no leakage on the sealing surface of the valve disc.
Key points of product selection
1. Main control parameters of butterfly valve are specifications and dimensions.
2, butterfly valve is a single plate type air valve, its structure is simple, easy to process, low cost, easy to operate, but the adjustment accuracy is poor, only suitable for ventilation and air conditioning system for switching or coarse adjustment occasions.
3. It can be operated manually, electrically or zipper. It can be fixed at any Angle within a range of 90°.
4, because of the single shaft single valve plate, the bearing force is limited, in the condition of large pressure difference, large flow rate when the valve service life is short.The valve has closed and ordinary, insulation and non - insulation.
5, the electric butterfly valve only two-position control, electric actuator and multi-leaf valve the same.
Butterfly valve has simple structure, small volume, light weight, fewer of their component parts, and is the key of a few parts to constitute the butterfly valve, open time is also very convenient, you just need to switch to choose to ninety degrees, the butterfly valve control of the fluid is very good, can increase the flow or reduce flow, valves at the time of transportation of any fluid has a certain resistance, and resistance of butterfly valves from their own, such as the thickness of the butterfly valve body, if you want to reduce the resistance to flow you just need to reduce its thickness.
Elastic seals are temperature-limited.
Butterfly valve is used in a wide range, if used to control the flow of the need to choose different types and size of the valve body, because the butterfly valve in the design of itself is more suitable for some larger diameter valves.Butterfly valve is not only widely used in petroleum, gas, chemical industry, water treatment and other general industries, but also used in the cooling water system of thermal power stations.
Contact Person: Han