Ductile Iron flanged Butterfly valve DN350

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 200 set

Supply Capability:: 10000 set/month

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Size	DN40mm-DN1400mm
Design Standard	API 609
End flange	EN1092 , ANSI 125/150# , DIN2501
Face to face	EN 558-1, BS5155 , ISO 5752
Top flange	ISO 5211

Body	Ductile iron,Stainless steel,WCB
Disc	Ductile iron,CF8,CF8M,C95400,C95500
Stem	SS416,SS420,SS431,SS316
Seat	NBR, EPDM, WRAS-EPDM
Suitale medium	Sewage, 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.

Q: Classification of telescopic butterfly 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. (1) vacuum butterfly valve. Butterfly valve with lower working pressure than standard atmosphere.(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. (1) high temperature butterfly valve. T>450 C butterfly valve

Q: What is the electric butterfly valve? Please, great God!: ZSDF type fire signal butterfly valve uses: top of the ZSDF type fire signal butterfly valve with the valve opening and closing signal device, when the valve is closed by 25% (open degree 4/1), the signal device output signal was mistakenly closed to the fire control center.

Q: What does the model D373H-16C of butterfly valve mean?: D373H-16C said: D type butterfly valve butterfly valve 3 said, said 7 of the turbine, said clip, 3 said the three eccentric (swash plate), 16 C nominal pressure, said carbon steel. In fact, if you want to understand this, to understand the valve 3.07ghz, later met have to be attached to the valve. 3.07ghzModel for valves, valve number indicates valve type valve should normally be that type, drive type, connection type, structural features, nominal pressure, sealing surface material, body material and other factors. Standardization of the valve type of valve design, selection, distribution, provide more convenient. The type of valve types and materials are more and more more models of the preparation of the valve will become more and more complicated. Although the preparation of our valve type unified standard, but gradually can not meet the needs of the valve industry. At present, the valve manufacturer usually adopt a unified numbering; not uniform numbering, the manufacturer can make out no.methods according to their own situation. Unit two unit three unit four unit five unit six unit seven unit

Q: How warm is the PTFE butterfly valve?: The normal temperature can be kept at 120 degrees and the instant temperature is 150

Q: Fire, the signal butterfly valve flange connection or welding?: Fire signal butterfly valve is generally used to clamp type connection more, the clip type butterfly valve body is without flange, that is to say, with two flanges on the pipe, then screw the butterfly valve. Followed by the butterfly valve itself with flanges, and then the pipe flange with screws connected, this is the flange connection. Fire welding less use, pressure is not high!

Q: How do hydraulic butterfly valves work?: 3. butterfly valve hydraulic drive device structureThe valve hydraulic device is mounted on the valve drive shaft. The driving shaft of the valve is fixed with a transmission spline, and the crank (with an outer spline) is sleeved on the driving shaft. When the hydraulic system works normally, through the gear sleeve, the transmission spline is connected with the crank. Thus, the hydraulic cylinder drives the crank, and the spline on the crank passes the torque to the transmission spline by means of a gear sleeve. Because the driving spline is fixed on the driving shaft, the driving shaft rotates and drives the valve plate to start and close. A section of optical axis is arranged at the end of the driving shaft and is inserted into the end of the manual shaft (matched with the clearance of H11/ H11), and the function is that the manual shaft is concentric with the main drive shaft. In normal operation, the optical axis rotates with the drive shaft, but the manual device does not move. When the hydraulic operation is performed manually or manually from the hydraulic unit, a * * * conversion is required. The utility model is composed of a nut, a hand wheel, a screw rod, a support frame and a shifting device. When the utility model is switched, the hand wheel is rotated and driven by the screw rod to move. A guide rod is arranged on the bracket to make the shift and translation stable.

Q: Butterfly valve network and ordinary butterfly what is the difference?: 1. The butterfly valve of the pipe network adopts an eccentric structure. When closed, it has the function of closing and tightening. The sealing performance is reliable. After opening and closing, the cover is completely sealed, and the cover is completely out of contact, so as to ensure that the sealing surface is not damaged.2, the sealing surface is made of stainless steel, corrosion resistant, high temperature resistant, long service life. With two-way sealing function, medium flow is not affected by the installation restrictions (if only one-way control medium should be used to seal the installation direction) is not affected by a single space, can be installed in the any direction.

Q: How do the butterfly valves d341 and d343 differ in appearance?: A difference in appearance:D341 is a wedge type single gate structureThe D343 is a parallel single gate structureIn addition, the structure is different. D341 butterfly valves are single eccentric, while the D343 is three eccentric. Three eccentric can do zero leakage, and single eccentric can not.D341:D: butterfly valve (die, the first letter of Pinyin)3: turbine drive (6) for pneumatic, 7 for hydraulic, and 9 for electric)4: flange connection (this additional: 7 for the pair, 6 for welding)1: midline form (another supplement: 2 represents double eccentric, 3 represents three eccentric)D343:D: butterfly valve abbreviation3: hand wheel drive4: flange type3: three eccentric.

Q: Butterfly valve structure and working principle: How it works: the disc is driven by the stem, and if it turns 90 degrees, it can be opened and closed once. By changing the deflection angle of the plate, the flow of the medium can be controlled. There are two kinds of butterfly valves commonly used: clip type butterfly valve and flanged butterfly valve.

Q: What's the meaning of butterfly valve d371po?: According to the provisions of the JB/T 308-2004 valve type programming method:D== butterfly valve3== transmission: worm gear7== connection mode: clip type1== structure: midlinePo== sealing surface material: lining PoPo== propylene oxide (PO)

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