Flanged Centerline Di Disc Flange 4 Inch Butterfly Valve One Way Valve Double Check Valve

Flanged Centerline Di Disc Flange 4 Inch Butterfly Valve One Way Valve Double Check 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

Persisting in 'High quality, Prompt Delivery, Aggressive Price', now we have established long-term cooperation with consumers from equally overseas and domestically and get new and old clients' large comments for 300LB LUG Butterfly Valve, Double Flange Butterfly Valve, Flange Triple Offset Butterfly Valve. We sticks to the path of professionalism, and continues to innovate and surpass. It is precisely because we have a young, united and hard-working group that our company is capable of growing and developing rapidly each year. Many products fully conform to the most rigorous of international guidelines and with our first-rate delivery service you will have them delivered at any time and in any place.

【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


Our company adheres to the service tenet of 'quality wins'. According to the different needs of users and through rigorous production process and quality management, we will deliver higher quality Flanged Centerline Di Disc Flange 4 Inch Butterfly Valve One Way Valve Double Check Valve to our customers. We are eager to provide customers with returns and unexpected surprises beyond their expectations. Over the years, we have established a stable supply relationship with many merchants by virtue of advanced technology, excellent quality and good reputation.

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