High Performance Lug Butterfly Valve Big Sizes with Vulcanized Seat

High Performance Lug Butterfly Valve Big Sizes with Vulcanized Seat

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

We pursue excellence, strive for perfection in every one of your products, be meticulous and provide you with the best Trunnion Ball Valve, Triple Eccentric Butterfly Valve, DIN Butterfly Valve. Our company now has a team composed of technical and professional personnel who can quickly develop, design and trial-produce new products, which can meet the various needs of users for products. We will continue to optimize product performance and service capabilities to meet new user requirements. We are confident that we have been going to have a bright prospect and to be distributed all over the world in the years to come. Our company has a group of technical backbones with many years of practical experience, and we rely on technology to continuously innovate and make progress.

【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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Our company combines international advanced technology, constantly exploring in practice, and has always been in a leading position in High Performance Lug Butterfly Valve Big Sizes with Vulcanized Seat industry. We have introduced advanced modern corporate management mechanisms, continuously strengthened the overall quality of corporate employees, established and improved related quality systems and other regulations, thereby enhancing the company's market competitiveness. Welcome all of the friends and customers to join us.

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