Stainless Steel Big Size Single Flange Butterfly Valves with Rubber Sealing

Stainless Steel Big Size Single Flange Butterfly Valves with Rubber Sealing

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

Dedicated to strict quality management and thoughtful client services, our experienced staff customers are generally available to discuss your demands and guarantee full client pleasure for Trunnion Ball Valve, Metal To Metal Butterfly Valve, Lug Type Butterfly Valve. Since the 1980s, market competition has intensified, thus consumers have increasingly higher individual demands for products and services. We use excellent brand culture and high-quality products to advocate a new life and production concept.

【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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In today's rapid economic development in the new century, all employees of our company will continue to explore and innovate in order to further improve the quality of Stainless Steel Big Size Single Flange Butterfly Valves with Rubber Sealing and build up a well-known brand. We have made unremitting efforts to establish a good reputation in the industry, and will strengthen internal risk and incentive mechanisms, unite and work together to build the company into the best enterprise in the industry. We sincerely hope to start a win-win and friendly partnership with you.

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