Lug Type Butterfly Valve Without Pin Ductile Iron DN80

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 50 set

Supply Capability:: 20000 set/month

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Centerline structure,pinless double half shaft design.
Disc has two-way bearing, no installation direction requirements.
Non-backed replaceable seat with good performance and a longer working life.
Square and short neck for lable use and cost saving.
Easy installation, no need flange gasket.

Size	DN50mm-DN600mm
Design standard	API609/EN593
End flange	DINPN10/PN16, BS4504PN10/PN16, ANSI class125#/class150#
Face to face	API609/EN558-1
Top flange	ISO5211
Body	Ductile iron/Cast iron
Disc	Ductile iron/CF8/CF8M/C95400/C95500
Stem	SS420
Seat	EPDM/NBR/Viton/PTFE
Actuator	Bare shaft/Lever/Gearbox and handwheel
Coating	Epoxy/Nylon/PTFE
Pin	With out pin
Suitable medium	Water/Seawater/Sewage/Air/Foodstuff/Oil

Q: When will Butterfly Valves be used?: Butterfly valve has the advantages of simple structure, easy operation, small footprint and light weight;1, for the city water supply network in general, DN300 still DN300 valve, butterfly valve above, this installation is convenient (especially large diameter valve installation is inconvenient, the weight of large volume, big);2, there are sediment pipeline, such as powder, mud and other mixed substances;

Q: I want to switch off the water in the bathroom only due to replacing sink taps, will water still come out of the pipe if i turn the stop valve: Assuming that the stop valves are good, turning them off will stop the flow of water to the sink taps. To test them, turn on the water faucet at the sink, then turn off both stop valves. The water should stop coming out of the faucet. If it continues to drip, the stop valves are defective and should be replaced when you do the job. If this is the case you'll have to shut off the main water valve or a valve upstream of the stops to replace them. Good Luck

Q: Butterfly valve is the control valve?: The flow characteristics of butterfly valves can be approximately equal percentage characteristics, with the positioner can do adjust, is mainly used in large caliber, straight stroke control valve more than 200 volume weight will be great, it suggests using the butterfly valve.

Q: What kinds of butterfly valves are available? What is the working principle of butterfly valves?: According to the form of sealing:(1) forced sealing butterfly valve.1) elastic sealing butterfly valve. The pressure of the valve seat, seat, or plate is produced when the seal is closed by the pressure from the valve.2) additional torque seal butterfly valve. The seal is produced by a torque that is applied to the valve shaft.(2) pressure sealed butterfly valve. The pressure is greater than the pressure on the seat or plate.(3) automatic sealing butterfly valve. The pressure of the seal is automatically generated by the pressure of the medium.Divided by work pressure:(1) vacuum butterfly valve. Working pressure is lower than the standard atmospheric pressure butterfly valve.(2) low pressure butterfly valve. Butterfly valve with nominal pressure PN<1.6MPa.(3) medium pressure butterfly valve. Butterfly valve with nominal pressure PN 2.5--6.4MPa.(4) high pressure butterfly valve. Nominal pressure PN is 10. 0--80.0MPa butterfly valve.(5) ultra high pressure butterfly valve. Butterfly valve with nominal pressure PN>100MPa.

Q: How does the pneumatic butterfly valve control the angle of opening?: This is really not good, control seems to be pneumatic defects, can only rely on the feeling

Q: Is the pressure test of the centerline butterfly valve checked or checked?: Every factory factory must require pressure tests.

Q: Whenever sports cars are referred, people talk in terms of 'valves'. ex: v8, v12 etc. What does this all mean? Also they sometimes say that a v8 makes a great noise. why? How does the number of valves effects the performance? Many thanks.: the v is in reference to the motor its in a v formation v8 4 cyliders on each side v6 3 per side v12 6 pre side now the valves is how many are in each cylinder you usually have 3 or 4 valves per cylinder the more valves the more horsepower the more cylinders the bigger the engine

Q: The difference between the directly buried gate and the flange valve and butterfly valve: The flange gate valve is stable and reliable when used in the pipeline, so the flange gate valve is used on the high pressure pipeline.Butterfly valve refers to the closure of parts (valve or butterfly plate) as the disk, around the valve shaft to achieve rotation and closing of a valve, the main cut off on the pipe and throttling role. Butterfly valve headstock is a disc shaped disc, in the valve body around its own axis of rotation, so as to achieve the purpose of opening or closing or regulation. Butterfly valve used in furnace, coal gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical smelting and power generation environmental protection engineering system, conveying a variety of corrosive and non corrosive media pipeline, used to adjust and cut off the media flow.

Q: What type of butterfly valves do you have in DN125?: Three eccentric PTFE sealing flange butterfly valve, three eccentric hard sealing flange butterfly valve, clip butterfly valveWorm, D343F-16C, snail, D343H-16C, manual, D71X-10, D71J-10Pneumatic D643F-16C pneumatic D643H-16C worm, D371X-10, D371J-10Electric D943F-16C electric D943H-16C pneumatic D671X-10 D671J-10Quick release valve, KTOD643F-25C quick opening valve, KTOD643H-25C electric D971X-10, D971J-10Quick closing valve, KTCD643F-25C fast closing valve, KTCD643H-25C pipe network, GD971X-10 GD971J-10Anti theft GDS971X-10 GDS971J-10Long rodWorm CD343F-16C long poleWorm CD343H-16C long poleThe cochlea is CD371X-10 CD371J-10Long rodElectric CD943F-16C long rodElectric CD943H-16C long rodElectric CD971X-10 CD971J-10Wait a minute, that's enough for your reference

Q: What are the uses and classifications of manually operated clip butterfly valves?: Manual to clip butterfly valve use: manual to clip butterfly valve butterfly plate installed in the pipe diameter direction.

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