Ductile Iron flanged Butterfly valve DN400

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Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
200 set
Supply Capability:
10000 set/month

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Product Description:

 

SizeDN40mm-DN1400mm
Design StandardAPI 609
End flangeEN1092 , ANSI 125/150# , DIN2501
Face to faceEN 558-1, BS5155 , ISO 5752
Top flangeISO 5211
BodyDuctile iron,Stainless steel,WCB
DiscDuctile iron,CF8,CF8M,C95400,C95500
StemSS416,SS420,SS431,SS316
SeatNBR, EPDM, WRAS-EPDM
Suitale mediumSewage, Sea water, Air, Foodstuff and Oil

 

1) Sizes:

 

     DN40mm-DN300mm
2) Materials:
     a) Body: CI(cast iron ,GG25 )   /   DI (ductile iron ,GGG40)

     b) Disc:  DI / CF8 / CF8M / C95400 
     c) Seat:  EPDM / NBR / TEFLON / VITON

 

3) Features:

 

    a)Cast hole. Flange connection meet ANSI 125/150#    DIN PN10/16     BS4504 PN10/16 in the meanwhile.

 

    b)Soft seat. Replaceable.Increase of service life.

 

    c)Double half shaft without pin.

 

    d) Square and short neck. Easy to stick scutcheon and cost saving.

 

 

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Q:Why is the butterfly valve used for fire control?
I suggest you find out the pressure and installation position first, the condition allows, you can choose butterfly, after all, much cheaper than butterfly valve. After the completion of the project, will be mainly engaged in the acceptance of problems, there are special management of fire units.
Q:How warm is the PTFE butterfly valve?
The normal temperature can be kept at 120 degrees and the instant temperature is 150
Q:Gate valve and butterfly valve which is installed when there is a direction?
Do not require frequent opening and closing, and keep gate fully open or fully closed. Not suitable for use as a regulator or throttling.
Q:What are the advantages of butterfly valves?
B. is cheap, especially when the caliber is big;C. the resistance loss is small and the fluid decreases through pressure;
Q:DN80 flange butterfly valve, DN80 flange butterfly valve DN80, flange butterfly valve DN80 what is the difference?
No, what's the difference?. It's not all the same.Flange connectionDN80 caliber butterfly valve. What's the difference?. Model and pressure. Materials are not ~!
Q:Butterfly valve general use occasions
Butterfly valve general use occasions:1 、 soft sealing butterfly valve applies to ventilation, dust removal pipeline two-way opening and closing and adjustment, metallurgy, light industry, power, petrochemical systems, gas pipelines and waterways.2, metal sealed double eccentric butterfly valve, suitable for heating, steam, water and gas, oil, acid and other pipelines, as the adjustment and closure devices.3, metal seal three eccentric butterfly valve, in addition to as large pressure swing adsorption gas separation control valve.4, metal seal three eccentric butterfly valve, can be widely used in petroleum, chemical, metallurgy, electricity, food, medicine, water supply and drainage, gas transportation and other fields.
Q:How does PLC control butterfly valves?
PLC control butterfly valve, usually control pneumatic butterfly valve or electric butterfly valve.PLC control pneumatic butterfly valve, that is, PLC program control, electric control, gas control, gas control butterfly valve;PLC control electric butterfly valve, that is, PLC program control electric, electric control butterfly valve.Control requirement:All PLC output contacts must be isolated from the intermediate relay and indirectly controlled by an intermediate relay.
Q:What is the difference between turbine butterfly valve and flanged butterfly valve?
Worm gear flange butterfly valve, also known as worm gear flange plate valve, is a simple structure of the control valve, but also can be used for low pressure pipe medium switch control. 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.Butterfly valve structure is simple, small size, light weight, only by a few parts. The utility model can be rapidly opened and closed only by rotating 90 DEG, the operation is simple, and the valve has good fluid control characteristics. Butterfly valve plate installed in the direction of the diameter of the pipe. In the butterfly valve body cylindrical channel, the disc shaped butterfly plate revolves around the axis, the rotation angle is 0 degrees ~90 degrees between, when rotates to 90 degrees, the valve opens the card completely. When the flange butterfly valve is in the fully opened position, the butterfly plate thickness is the only resistance when the medium passes through the valve body, so the pressure drop produced by the valve is very small, so that the flow control characteristic is better. Butterfly valve with bullet sealing and metal sealing two seal type. Resilient sealing valve. The sealing ring can be mounted on the valve body or attached to the periphery of the disc.
Q:How many kinds of butterfly valves are there?
1. according to the structure classification (1) Central sealing butterfly valve (2) single eccentric sealed butterfly valve (3) double eccentric sealed butterfly valve (4) three eccentric sealed butterfly valve2., according to the sealing material classification (1) soft sealing butterfly valve. (2) metal hard sealing butterfly valve.3. according to the form of sealing classification (1) forced sealing butterfly valve (2) pressure sealed butterfly valve.4. classification according to working pressure (1) vacuum butterfly valve. 2) low pressure butterfly valve. (3) medium pressure butterfly valve. (4) high pressure butterfly valve. (5) ultra high pressure butterfly valve.5. classification by working temperature (1) high temperature butterfly valve. (2) medium temperature butterfly valve. (3) normal temperature butterfly valve. (4) low temperature butterfly valve. (5) ultra low temperature butterfly valve.
Q:Electric butterfly valve (not take the lead) what do you mean?
Electric butterfly valve, as its name implies, consists of an electric actuator and butterfly valve, and the customer does not take the lead, that is, without the electric actuator, only the butterfly valve can be provided.

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