butterfly valveWithin 20 days Standard Structure: Butterfly Pressure: Low Pressure

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Standard or Nonstandard: Standard Structure: Butterfly Pressure: Low Pressure Power: Manual Material: Casting Temperature of Media: Normal Temperature Media: Water Port Size: DN40-DN1200 Place of Origin: China (Mainland) Wafer type: butterfly valve Packaging & Delivery

Packaging Details: Plactic bag+Paper cover+Plywood cases 

Delivery Detail: Within 20 days 

Specifications

Wafer type lined butterfly valve 

1.Design standard:ISO,BS,API 

2.DN40-DN1200 

3.PN10/PN16/PN25 

4.Center lined disc 



Wafer type lined butterfly valve 


 


 


Technical Data


DN40-DN1200mm PN1.0-1.6MPa


General Design:ISO 5752 / BS 5155 / API 609


Body: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel


Seat: EPDM, PTFE, NBR,Viton


Stem: Stainless Steel, Steel,


Disc: Ductile Iron with Nickel Coating,Ductile Iron with Nylon Coating, Stainless Stee 304/316l, Alu-Bronze,Duplex steel


Flange Connection:DIN,ANSI,JIS,BS


 


Product Features


Wafer type flanged body style fit between FF or RF flanges


PTFE bushing ensure the maximum shaft support and centralized alignment


360°polished disc assures positive on-off


Hard-Backed Cartridge seat or Edge-Boot seat


The pin,spline or square connection are all available


Universal ISO 5211 mounting pad.


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Q:How to connect the signal butterfly valve?
If you mean the signal of fire water supply system, there are generally three outlets, one public, one open and one off. Fire control system signal butterfly valve is normally open, so the signal butterfly valve to open position, with a multimeter to measure the 2 lines, the 2 lines into the input module is fine.
Q:Pulmonary Valve Stenosis?
1761 - Pulmonary valvar or valvular stenosis is one of the more common forms of congenital heart malformations and it has been extensively studied since the original description of pulmonary valve stenosis by John Baptist Morgagni in 1761. 1888 - Tetralogy of Fallot, first characterized by Dr.Etienne Fallot in 1888, is present in about 3000 children born each year in the United States. It is a combination of four heart abnormalities. Dodrill and his colleagues employed it with success for the open correction of a stenotic pulmonary valve in October 1952.
Q:Why anti condensation of aluminum alloy anti condensation butterfly valve?
High performance materials have a lot of outstanding advantages: such as low water absorption, corrosion resistance, insulation, cold insulation performance, etc., is 4 times the ordinary material butterfly valve.Anti condensation butterfly valve body adopts ultra light aluminum alloy valve body, its weight is only 1/3 of the traditional butterfly valve, the torque is small, the use and installation is convenient, and the corrosion is avoided.
Q:Butterfly valve structure and working principle
Butterfly valve structure: Center to clip butterfly valve, single eccentric butterfly valve, double eccentric butterfly valve, three eccentric butterfly valve
Q:What do you mean, handle, butterfly valve, hard back and soft back?
My understanding is: PTFE butterfly valve is a hard back; soft rubber seat is a soft back
Q:Butterfly valves are widely used in 2.0MPa below the pressure and temperature of not more than 200 degrees of various media, right?
3. kinds of butterfly valve:According to the connection mode: flange type, clip type.According to the material of sealing surface, soft seal and hard sealing.According to the structural form, butterfly valves can be divided into the following types:Plate typeInclined plate typeOffset plateLever type4. butterfly valve features:(1) the structure is simple and the shape is small. The utility model has the advantages of compact structure, short structural length, small size and light weight, and is suitable for large caliber valves.(2) the resistance of the fluid is small, and when the valve is fully opened, the valve seat passage has an effective circulation area, so the fluid resistance is smaller.(3) open and close, convenient and quick, good adjustment performance, butterfly plate rotation 90 degrees can be completed headstock. By changing the angle of rotation of the disc, the flow can be graded.(4) the opening and closing moment is smaller, because the butterfly plate on both sides of the rotating shaft is basically equal to the medium, and the opposite direction of the torque is generated, so that the opening and closing is more labor-saving.(5) low pressure sealing performance, sealing surface materials generally use rubber, plastic, sealing performance is good. Limited by the material of the sealing ring, the pressure and the temperature range of the butterfly valve are smaller. But the use of hard sealing butterfly valve pressure and temperature range has been greatly improved.
Q:Are all vacuum EGR valve the same?
The first source, pages 20-22, lists all 9 basic types of EGR valves. Not all the types are vacuum operated, but check out #5 and #6 - they behave very differently from each other without a real live exhaust system connected to them.
Q:Classification of telescopic butterfly valve
(2) temperature butterfly valve. 120 C
Q:What is a Valve Adjustment?
Adjusting hydraulic lifters, also called setting the valve lash provides the necessary travel and operation for the opening and closing of the intake and exhaust valves. Most new vehicles use hydraulic lifters, since their operation and design provides an easy and simple method of keeping the valve train in synchronization. You can perform the adjustment with a cold, static engine or during engine idle once the operating temperature has been reached. Adjusting the lifters on a running engine, however, can present a problem with oil splashing upward from the tappets. They make a spring clip to prevent it from getting all over the engine and compartment. Cost vary from city to city Mechanic to mechanic Hope it helps Lr
Q:Butterfly valve medium flow direction of the provisions of it?
The direction of the arrow on the valve body is cast, refers to the flow of media, users see the arrow, the arrow direction according to the logical and installation, this installation has become a habit, it is easy to accept the installation instructions, according to the national standard is not what error. But in the eccentric butterfly valve is installed so that sometimes there will be some problems, said the following example: according to the flow of eccentric butterfly valve with the medium flow consistent installation, tube medium is liquid, after the valve is closed, if the original direction of medium inlet pressure, reduced or zero, the export of medium reflux reflux, if senior supply, resulting in the high pressure medium, the pressure is greater than the inlet pressure, the valve will be subjected to reverse pressure, because the hard seal butterfly valve as a one-way valve so that the use is not conducive to sealing butterfly valve, and there will be leakage.

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