Ductile Iron Butterfly Valve all sizes

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Tianjin
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TT OR LC
Min Order Qty:
111 PCS
Supply Capability:
1000 PCS/month

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Product Description:

Standard or Nonstandard:

Standard

Structure:

Butterfly

Pressure:

Low Pressure

Power:

Gear Operated

Material:

Casting

Temperature of Media:

Low Temperature

Media:

Water

Port Size:

8

Place of Origin:

China (Mainland)

Model Number:

DI_ BV

Brand Name:

CNBM

 

Packaging & Delivery

Packaging Detail:wooden case
Delivery Detail:within 2 weeks after order

 

Specifications

Double Eccentric Flanged Butterfly Valve, Ductile Iron Butterfly Valve

Ductile Iron Butterfly Valves
Double Flanged Butterfly Valves With Disc Double Eccentric With Resilient Seat Conform to BS EN593 (BS5155)
Size:DN100-DN2000
Specification:
Nominal pressure (MPa)1.6
Testing PressureBody shell2.4
Seal1.76
Working pressure (MPa)1.6
Suitable temperature (°C)≤80
Suitable MediumWater
Technical and requirement
  1. Design, manufacture are according to standard of BSEN593-98(Butterfly Valves For Waterworks Purpose).

  2. The flange of the butterfly valve is according to PN1.6 Mpa flange of BSEN1092-2 for internal ductile iron flanges.

  3. Inspection is according to standard PrEN12266-3.(No Visible Leakage).

  4. The valves for PN1.0 MPa and PN2.5 MPa are also can be designed and manufactured.

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Q:What is valve packing used for?
Valve packing in the valve under the gland to prevent leakage, you can use ordinary asbestos rope and butter emergency replacement
Q:How to identify a good or bad valve?
First, the appearance, two according to the standard to see flange thickness, outer circle, wall thickness and other dimensions are standard, 3 see details.
Q:What is the difference between the valve before the pump and the valve after the pump?
Pump front valve: current limit; pump rear valve: limit pressure.Pump operating procedures: the pump must be closed before and after the valve, open the pump, slowly open the pump front valve, pump pressure normal, slowly open the pump, valve until all open. If the pump is in front and rear valves are opened, the pump is very easy to burn the motor.
Q:Proportional valve why than other small pipeline valves
3.10 pipes and their accessoriesGraphical representation of numbers, names, symbols3.10.1 flow pipeline thick lines.3.10.2 meter, pipe line, heating and blowing pipeline, fine solid line3.10.3 pipe with casing3.10.4 steam tracing tube3.10.5 cross pipe means two pipe crossing is not connectedThe 3.10.6 intersecting pipe refers to the intersection of two pipelines, and the diameter of the connecting point is 3~5 times of the line width of the connected pipe line3.10.7 branch pipeline3.10.8 medium flow is generally marked near the valve graphical symbolsThe 3.10.9 heat retaining tube may be represented by the symbol on the local portion of the insulated pipe3.10.10 pipe slope, line slope mark, drawn by the slope symbol in GB4458.43.11 general connection form of pipelineNumber, name, graphic symbol3.11.1 flange connection3.11.2 flow orifice3.11.3 pipe end sealing plate
Q:Remove the handle and lever the stem rotation with a wrench,
1, carbon steel (WCA, WCB, WCC) applies to working temperature between -29 ~ 425 degrees between the middle and high pressure valve. Used for superheated steam. High temperature and low temperature oil, liquefied gas, compressed air, water, natural gas and other media.2 、 low temperature carbon steel (LCB) is suitable for working temperature between -46 ~ 345 Degrees of low temperature valve.3, alloy steel WC6, WC9 is suitable for the working temperature -29 to 595 degrees between the non corrosive medium high temperature and high pressure C5, C12, C12A for working temperature -29 to 650 degrees between the corrosive medium high temperature and high pressure valve.4 austenitic stainless steel for working temperature between -196 ~ 600 degrees corrosion of any medium valve.5,
Q:In the fire drawing, what valve does the following valve represent?
1, fire drawings, the following valve signal valve and alarm valve.2 、 signal valve is the best matching product of automatic fire sprinkler system. The structure characteristics and working principle: the top design electrical device the butterfly valve of the worm and the worm gear driving device, and with the stem straight connecting transmission. In the closed precision electromechanical device, opening mechanical instructions and imported electrical components and parts with rust proof valve. The output signal is stable and reliable for a long time.3 、 alarm valve products are wet alarm valve, dry alarm valve, rain alarm valve, pre acting alarm valve and so on. It is the core component of wet automatic sprinkler system. The water enters from the bottom of the valve body and closes the check valve through the dead weight inside the valve body to form a standby system with water pressure. The high pressure gauge indicates the system pressure, and the low pressure gauge indicates the pressure outside the system. When the protected area fire, high temperature make the nozzle temperature sensing element of blast nozzle sprinkler system, pressure drop, the valve opens, water flows continuously into the system, the nozzle opening, continuous sprinkler. At the same time, a small amount of water enters the alarm tube from the inner hole of the valve seat, passes through the filter, the retarder, and then pushes the hydraulic alarm to alarm. In addition, after the pressure switch is activated, the electrical signal is issued and the make-up water is started.
Q:How about the valve?
Now, there is an office in Beijing, valve enterprises in the valve, a lot of online ah, you click to see if you want information
Q:What does 3/4''mean in the name of the valve?
Valve diameter, that is, we often say 6 points valve, used in English units, with metric units should be DN20.2 points DN84 points DN156 points DN20 (3/4'')1 inches DN251.2 'DN321.5 'DN402 'DN502.5 'DN653 'DN804 'DN1005 'DN1256 'DN1508 'DN20010 'DN25012 'DN300Nominal diameter (nominal, diameter), also known as the average diameter (mean, outside, diameter).The tube is thin from the metal tube, and the outer diameter of the tube is almost the same as the inner diameter of the tube, so the average value of the outer diameter of the tube and the inner diameter of the pipe is called the diameter.Because the units have metric (mm) and British (inch) distinction, there are the following methods of address.1., based on the metric system (mm), called DN (metric unit)2., on the basis of the British system (inch), called NB (inch unit)DN (nominal, diameter)NB (nominal, bore)OD (outside, diameter)4. [case]Galvanized steel pipe DN50, sch 20Galvanized steel pipe "NB2", sch 205., the outer diameter and DN, NB relationship is as follows:------DN (mm), --------NB (inch), -------OD (mm)15-------------- 1/2--------------21.320--------------3/4 --------------26.725-------------- 1, ----------------33.432-------------- 1, 1/4, -----------42.240-------------- 1, 1/2, -----------48.350-------------- 2, -----------60.365-------------- 2, 1/2, -----------73.080-------------- 3, -----------88.9100-------------- 4, ------------114.3125-------------- 5, ------------139.8150-------------- 6, ------------168.3200--------------- 8------------219.1The above data is referenced only in ASTM A53. Please note that there are some differences in external diameter with different specifications.
Q:The water pipe in the house is broken.
Not recommended against the flood to repair the valve, first you have to be repaired, second may be more complex, it is not easy. I have a bad experience this, take the valve, because it is plastic, and aging, the thread is broken, the new is not on do not have to flow out of the water, get it is. To find the valve, the mess!
Q:How to carry out the valve strength test and air tightness test?
All the factory must go through the valve pressure test, strength test for 1.5 times the nominal pressure, closed at both ends of the valve import and export, fully open the valve test pressure for 1 - 5 minutes, see the specific situation, also called low pressure seal test seal test pressure seal test, 0.6MPa. Also 1.1 times the seal hydrostatic test, specific, you see, JB/T9092 standard, very detailed

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