Soft Seal Flange Type Double Eccentric Butterfly Valve

Soft Seal Flange Type Double Eccentric Butterfly Valve

ZFVALVES Butterfly Valve the sealing ring is a composite structure of flexible graphite plate and stainless steel plate. It is mounted on the valve body and the sealing surface of the butterfly plate is welded with stainless steel

Product Details

Our Big Size Butterfly Valve, Trunnion Ball Valve, Bidirectional Triple Offset Butterfly Valve must pass strict quality control testing during the processing, therefore it is of high quality and enjoys a good reputation in the domestic and international market. We are your reliable partner in international markets with the best quality products. We have realized the transformation from manufacturing to creation successfully after innovation with our own unique technology. We keep our dreams alive and are committed to building a responsible and sentimental company, drawing up a beautiful blueprint for the future with our customers. Our company advances with the strategy of 'technology-oriented, quality for survival, and reputation for development'.

【Product Introduction】:

We ZFVALVES is a professional manufacturer of Double Flange Butterfly Valve. ZFVALVES offers a wide range of standard valves to meet the needs of customers around the world, including: API609 / ANSI / ASTM standards, AWWA / AWWA C207 standards, EN593 / DIN / BS standards, ISO standards, JIS / JIS B2220 standards, GOST / GOST 54432 standards Wait.


【Product Information】:

* Nominal Diameter : DN300

* Pressure : PN16

* Connection Type : Double Flange ends

* Body: A351 CF8

* Disc: A351 CF8M

* Seal: SS316+Graphite.

* Seat:Stainless steel Integral seat

* Stem: A182 F304

* Operation Way: Gearbox

* F/F length : 178mm

* Material Heat Treatment : Solution treatment.

* Need Extended Stem : No

* Suitable Temperature : -29°C ~ 425°C

* Suitale Pressure : PN ≤ 16Bar

* Suitable service : W.O.G. Acid. Corrosive service .

* Function : Shutoff & regulation

* Design and manufacture as per: EN 593

* Face to face dimension as per: EN 558

* End flanges dimension as per: EN1092-1

* Test & inspection as per: EN12266-1

* Supplying Mode : OEM production & ZFV brand .

Please contact us for detailed data


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【ZFVALVES Pressure Test Requirements】:

 1. Prior to shell testing, the valve shall not be painted or coated with other coatings that mask surface defects (phosphorization or similar chemical treatment is allowed to protect the valve surface prior to testing, but voids, pores and blisters should not be hidden, etc. Defect)

 2. When performing the sealing test, no external force should be applied to both ends of the valve, which will affect the leakage of the sealing surface. 

 3. For the visible leakage of the valve pressure test, the housing grinding and upper sealing tests are not allowed. If the test medium is a liquid, there should be no visible droplets or surface moisture. If the test medium is air or other gas, there should be no air bubble leakage.

 4. For low pressure seal testing of valve pressure test, visible leaks are not allowed to pass through the valve identification, the contact surface between the valve seat and the valve body, and there is no structural damage. Reference Standard API 598 Test Test Allowable Test Medium Leakage Rate Through Sealing Surface Duration.

We ensure that every outgoing valve is strictly inspected


By observing market changes, we constantly adjust and optimize our operating varieties, and strengthen market marketing and expansion. We have a large number of stable customers in the Soft Seal Flange Type Double Eccentric Butterfly Valve industry by virtue of superior supply channels, advanced management methods and excellent service methods. Under the effect of market economy, our company's business scope has been expanded to many major regions and countries. We are eager to meet the needs of users and think what they think. Since the establishment, our company has won a good reputation in the industry and the trust of customers at home and abroad with strong technical support, resource advantages, brand effect and good after-sales service!

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