Double Disc Butterfly Type Check Valve

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Product Description:

Cast iron valves
Size: DN40-1200 or 1.5-48' or above
Working Pressure: PN10/16/20/25, 150LB-2500LB
Suitable temperature: -45c~150c
(1)Design and manufacture: DIN3352, BS5163, BS5150, ANSI B16.34, API600, API6D, API609, EN593, GB, T12238
(2)End connection: ANSI B 16.1, ASME B16.5, B16.47, B16.25, B16.34, JISB2212-JISB2214, DIN2543-2550, EN1092, AS2129, ISO 5211
(3)Wall thickness: API600, BS1868
(4)Face to face (end to end): EN 558, ASME B16.10, DIN3202, ISO5752, JIS, API609, MSS, BS5155
(5)Inspection and test: API598, EN12266-1, BS6755, API6D, ISO5208
Materialfor main parts:
(1)Body: CI, DI, WCB, ALB, CF8, CF8M
(2)Disc: DI, ALB, C95400, Rubber lined Disc, 1.2501, 1.4529, CF8M, CF8, Hastelloy
(3)Stem: SS416, SS410, SS304, SS431
(4)Seat: NR, Hypalon, EPDM, Neoprene, NBR, Wear-Resistant EPDM, Viton, Silicon, Heat-Resistant EPDM, WhiteNBR, WhiteEPDM, EPDM, PTFE
Coating: Fusion bonded epoxy coated
Connection type: Flanged type, Push-on type, Mechanical Joint type, Plain ends type
Sealing: Soft sealing or metal-to-metal seat, Flexible graphite
Operation: Manual, Pheunatic, Electric, Hydraulic and Pnewmatic-Hydraul
Appropriate medium: Air, water, sewage, steam, coal gas, oil
Packaging: Export polywood cases, or as per customers' requirements
Application: Fresh water, sewage, sea water, air, vapor, food, medicine, oils. Acids, alkalis, salt etc.

ItemWafer type check valve
Body materialCI/DI/CS
Disc materialSS
Pressure  PN16/CLASS125

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Q:What are the CF8 and CF3M marks on the stainless steel ball valves?
CF8 stands for 304 material, and CF3M stands for 316L.Stainless steel ball valves only need to rotate 90 degrees of operation and small rotating torque can be closed tight. Full equality of the valve cavity for the media to provide a small resistance, through the flow channel. The main features of the valve itself is compact, easy operation and maintenance, stainless steel ball valve can be used to control air, water, steam, all kinds of corrosive media, mud, oil, metals and radioactive liquid media and other types of fluid flow. Ball valve body can be integrated, or can be combination. This kind of valve should be installed horizontally in the pipeline. Stainless steel ball valve classification: stainless steel pneumatic ball valve, stainless steel electric ball valve, stainless steel manual ball valve. Stainless steel ball valve is divided into 304316321 stainless steel ball valve.The working principle of the ball valve is to rotate the spool to make the valve unblocked or blocked. Valve switch light, small size, can be made large caliber, reliable sealing, simple structure, easy maintenance, sealing surface and spherical often in the closed state, the media can not easily be eroded, widely used in various industries.
Q:Gate valve, butterfly valve, ball valve advantages and disadvantages? What other commonly used valves?
Commonly used valves are: gate valve, globe valve, check valve, ball valve, butterfly valve, safety valve, regulating valve, plug valve and so onValve: valve is closed parts (RAM) vertical movement of the valve in the pipeline along the channel axis, used primarily as a medium cut that open and close use. In general, the valve can not be used as a regulation flow. The utility model can be applied to low temperature pressure, and can also be applied to high temperature and high pressure, and can be made according to different materials of the valve. But the valve is generally not used to transport mud and other media pipeline.Advantages: fluid resistance is small; the opening and closing torque needed by the smaller; can use the ring pipe flow to the two direction in the medium, that is to say the unrestricted flow of medium; the fully open, the sealing surface by the erosion of the working medium is smaller than the cut-off valve; the body has the advantages of simple structure, manufacturing good craft; the structure of relatively short length.Disadvantages: the size and height on the larger required installation space is larger; in the process of opening and closing, a relative friction sealing, friction is large, even scratch phenomenon caused by easily at high temperature; the valve has two sealing surface, to processing, polishing and maintenance of some increase the opening and closing time difficult.
Q:What does "all pass" ball valve mean?
Simply put, from the valve side of the runner hole, put a ball of the same diameter can pass to the other side, that is, all pass ball valve
Q:Butterfly valve and ball how to distinguish from the appearance
To say the difference, the biggest difference is that the butterfly valve is a piece of open and close, and the ball is a ball. They work by spinning their own axes!(1) the butterfly valve from the valve body, valve seat, valve plate, valve rod, all parts are a significant drain on the outside, one eye can see; the ball valve is composed of a valve body, the valve core (a round ball), valve rod, valve position is in the valve body inside, the naked eye can see only a part, so the seal the performance of the valve than the butterfly valve well;(2) butterfly valve structure is relatively simple, low pressure general use butterfly valve, butterfly valve the maximum pressure can only reach 64 kilograms. Ball valve structure is relatively complex, more resistant to high pressure, the ball valve up to 100 kg.(3) butterfly valves are divided into soft seal and seal, soft seal butterfly valve is generally perpendicular to the center of the plate, is the valve plate, valve seat, valve stem is the center position of the highest temperature soft sealing butterfly valve is 150 degrees below the pressure of 16 kg, hard seal butterfly valve can be divided into single eccentric, double eccentric three, the eccentric, we generally use more than three eccentric, because the three eccentric according to its structure, better sealing performance, hard seal butterfly valve pressure is 64 kg;(4) the valve can also be divided into soft seal and seal, soft seal valve can reach the highest temperature below 280 degrees, the pressure is below 64 kilograms, hard seal ball valve temperature can reach 425 degrees below the pressure below 100 kilograms.
Q:What does copper ball valve mean by "1/2"?
This indicates that the caliber of copper ball valve is DN15
Q:What does copper ball valve type Q11F-16T mean?
Q refers to the ball valve, 1 refers to the connection mode, the latter 1 refers to the straight through type, F refers to the sealing material, 16 refers to the nominal pressure of 10 times, T refers to the main material for copper material.
Q:What do you mean by ball valves dn20pn1.6rf?
DN20 caliber is 20mmPN is the pressure grade, usually PN16, 1.6MPa classRF convex flange connectionYour side should be similar to the Q41F-16 model of this type of ball valve
Q:Ball valve use?
Ball valves are widely used in petroleum refining, long-distance pipeline, chemical, paper making, pharmaceutical, water conservancy, electric power, municipal, steel and other industries, and play a decisive role in the national economy.
Q:Is the two piece ball valve in the direction of the pressure pipe?
A piece of ball valve, the current market pressure of most products below 6.4MPA, two piece ball valve about 12.8MPA products are also common, there are 20MPA, three pieces of ball valves are mostly below 6.4MPA. Know the characteristics and shortcomings of these three kinds of ball valves, you can completely choose according to your own needs.
Q:Hello, I would like to ask the household tap water valve selection of stainless steel ball valve or brass ball valve is better, thank you
I have used two kinds, but stainless steel gate valve is better. Note that it must be made of stainless steel 304. I bought more than 300 yuan a gate valve. Total valve, no way to save money.

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