Multi Standard Double Flange Big Size Butterfly Valve

Multi Standard Double Flange Big Size Butterfly Valve

Big size butterfly valve is light in weight, low in material consumption, small in installation size, easy to operate and quick, and it also has good function of flow adjustment and close zero leakage.

Product Details

Our company is a professional commitment to research and development, production and sales of Double Flange Butterfly Valve, Class 150 Triple Offset Butterfly Valve, Lug Style Butterfly Valve. After years of construction and development, our company has now become a relatively large-scale professional manufacturer of agricultural machinery in China. The concept of pursuing excellence and always reaching new heights has always inspired us to keep advancing courageously in the tide of market economy. Under your trust, we will serve you wholeheartedly, welcome to patronize!

【Product Introduction】:

ZFVALVES Big size butterfly valves are exported to Europe, Africa, Asia and other countries,it is widely used not only in petroleum, gas, chemical industry, water treatment and other general industries, but also in the cooling water system of thermal power stations.

In the foreseeable short time, especially in the use of large and medium-sized diameter, low pressure field, butterfly valve will become the dominant valve form.


【Product Parameter】:

* Nominal Diameter: 44 inch

* Pressure Rate: Class 150

* Connection: Double LUG ends type

* Structure: Triple offset desgin

* Body: WCB

* Disc: WCB

* Stem: AISI420

* Seal: Laminated stainless steel 304 + Graphite

* F/F Dimension: 230mm 

* Prime Coating: Color Black

* Coating RAL NO.: RAL5005

* Using Temperature: -29°C ~ 425°C 

* End flanges dimension: ASME B16.47 Series B

* Wenzhou city , ZJ province, China


5-25-4


【Big Size Butterfly Valve Feature】:

1. The disc of the valves is installed in the diameter direction of the pipe.

2. The sealed surface is made of hard alloy of cobalt by overlaying welding. Through thermal treatment, the hardness of disc in improved

3. Big Size Butterfly Valve has casting valve body, face-to-face size conforms to ISO5752, ASME B16.10, API609. 

4. Elastic property of composite metal sealing ring performs zero leakage.

5. Explosion-proof rod design is safe and reliable, fully meet the requirements of API609.

6. The valve position indicator on the rod and top mounting flange facilitates the disc position indication.


【Attention for seat surfacing】:

In the generation and application of butterfly valve are indispensable to the use of welding technology, the butterfly valve seat needs surfacing welding, then when welding we should pay attention to what? The following free from the professional production of big size butterfly valve zfvalves sorting release and hope to help with you:

* VT (visual inspection) is usually used to check for obvious welding defects, such as cracks, edging, molding defects, burn-through, spatter, etc

* When the sealing surface is finished, it is usually checked for cracks by PT according to the customer's requirements,

* The hardness of sealing surface should be tested after surfacing.

* Common surfacing materials:1CR13、2CR13、Stellite6、Stellite21、Stllite12、Cobalt-base alloy、Monel...

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We insist over the principle of enhancement of 'High high quality, Efficiency, Sincerity and Down-to-earth working approach' to offer you with superb assistance of processing for Multi Standard Double Flange Big Size Butterfly Valve. Our company insists on benefiting users, customers, and careers, thus achieving a win-win situation. We are looking forward that more and more oversea friends join in our family for further development near the future!

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