valve of china 4900

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Quick DetailsStandard or Nonstandard:  Standard Structure:  Gate Pressure:  Medium Pressure
Power:  Manual Material:  Casting Temperature of Media:  Medium Temperature
Media:  Water Port Size:  DN40mm-DN300 Place of Origin:  China (Mainland)
Model Number:  GF4 resilient gate valves:  resilient seat flange

Packaging & DeliveryPackaging Detail: air plastic bag inside/wooden box outside
Delivery Detail: 15-60days

SpecificationsDIN3352 F4 resilient seat flange gate valves
1.size:DN40-DN300
2.medium:water
3.standard:DIN
4.certificate:ISO9001 CE

resilient gate valves
1.size:DN40-DN300
2.medium:water
3.certificate:ISO9001 CE
4.standard:DIN

available medium:water
working temperature:≤80oC

flange dimensions:DIN2501

face to face dimensions:DIN3202F4.


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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 is the lug butterfly valve connected to the flange?
Lug type butterfly valve is also called a single flange type, that is, with a flange on the valve body, usually installed at the end of the pipe, and even the method is 1: double bolt lock on the valve body 2: into the flange 3: lock nut
Q:I want to what is better a metal valve or tissue valve replacement for someone who is in their 30's?
I've had a couple of patients tell me they could hear their metallic valves in the quiet of the night. It isn't something that would bother you all the time. The anticoagulant needed makes a lot of people choose the pig valve, but the latter will wear out and need replacement periodically. Lewis Grizzard, who died from complications of his fourth valve replacement, wrote a book They Tore Out My Heart and Stomped That Sucker Flat, that was half about his aortic valve and half about his love life, the author having had as many ex-wives as heart valves. It may be difficult to find a copy now, but it's a book you'd enjoy reading, and contemplating it (and him) might help you decide.
Q:What is the meaning of the D341*5-10 / 16ZB1 turbine butterfly valve flange said?
Liu1964tg, this guy is right, don't know, don't mislead everybody
Q:Butterfly valve is generally used in what position?
It can also be used for switch control of low pressure pipeline medium.
Q:That industry uses most of the butterfly valve, and only use the butterfly valve, a large number of use of butterfly valve, seek expert advice!
See what kind of butterfly valve: 1., the use of all metal, mainly in the chemical industry.2. large diameter butterfly valve, mainly in low pressure water pipes and wind pipes3 environmental protection water treatment factory with more butterfly valve.
Q:What is an ERG valve?
EGR stands for exhaust gas recirculation. It recirculates your exhaust gases back into the combustion chamber to lower temperatures and NOx emissions. This valve commonly gets clogged with carbon due to the fact it's recirculating exhaust gases. If the diaphram is not broken or damaged and still works, frequently you can simply remove the EGR valve and have the carbon cleaned out. It's a dirty job, but can be done if you can get to the EGR valve. If you do need to purchase the part it typically runs about $175. Labor charges will depend on where it's located.
Q:Butterfly valve, two-way pressure and one-way pressure what is the difference?
One way sealing butterfly valve is the front of the butterfly valve. When it closes, it must face the direction of the medium. The medium flows only in one direction, and the arrow on the valve body indicates the direction of the flow direction of the medium. Attention should be paid to the flow direction of the medium during installation. Two way butterfly valve is butterfly plate can face or back to the media flow direction, installation without attention to medium flow direction, in the valve body also does not indicate the direction of the medium flow arrow. Two way sealing butterfly valve stem force is greater than one-way butterfly valve stem. Design, the same diameter, pressure butterfly valve, two-way sealing butterfly valve rod diameter than one-way sealing butterfly valve stem diameter.
Q:What are the functions and uses of butterfly valves?
Butterfly valve is fully open to fully closed is usually less than 90 degrees, butterfly and butterfly stroke itself has no self-locking capability, in order to position the disc to install the valve stem on the worm gear.Using worm gear reducer, not only can the butterfly plate have self-locking ability, so that the butterfly board stops at any position, but also can improve the operation performance of the valve.
Q:Butterfly valve sealing material has several?
Butterfly valve sealing material has nine kinds:X1 (natural food gum);X2 (Heipalen);X3 (ethylene propylene rubber);X4 (chloroprene rubber);X5 (Ding Qing rubber);X6 (abrasion resistant rubber);X7 (fluorine rubber);X8 (silicone rubber);X9 (heat resistant ethylene propylene rubber).Also known as butterfly valve, control valve has a simple structure, can be used for low pressure pipeline valve switching control is closed parts (disc or disc) is a disk, around the valve axis to achieve the opening and closing a valve, the valve can be used to control the flow of air, water, steam steam, all kinds of corrosive medium, mud, oil, metals and radioactive liquid media and other types of fluid. On the pipeline, mainly from cutting and throttling. 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.

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