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Ductile Iron Wafer Type Butterfly Valve

Ductile Iron Wafer Type Butterfly Valve

Butterfly Valves are excellence design in a variety of applications, cast in both wafer and lug patterns, which features a one-piece body for minimum weight and maximum strength and unique stem hole to ensure a dry stem work.
Product Details

Ductile Iron Wafer Type Butterfly Valve


Main Feature
Rubber lined butterfly valves are with simple structure and easy to produce, the center of stem, disc and valve body are in same position. The valve are lined by rubber such as Natural Rubber, or NBR, EPDM, which have been widely used in services containing corrosion medium like strong Acid or Alkali. The center lined butterfly valve are with high precise connection with excellent strength, suitable to operate by lever, gear, electric or pneumatic. The butterly valve is of compact structure and with superior sealing, and there is no leakage from the stem.This butterfly valve are with perfect sealing capability, less torque, easy to maintenace, besides, the seat and packing could be replaced. They are bi-directional seal and could be achieved zero-leakage for both. By the way, the sealing materials are with high capability of aging resistance and corrosion resistance, the service life are long. 

The turning center of the butterfly plate is on the center line of the valve body and the sealing face section of the butterfly plate. In closing, the ex-circle sealing face of the butterfly plate will extrude the valve seat made of synthetic rubber, generating elastic deformation on the seat to form an elastic force used as a sealing specific pressure so as to guarantee the tightness of the butterfly valve.

Main Parameter Specification
Design and Manufacture:API 609, MSS SP-67, GB/T 12238
Face to Face Dimension:API609,GB/T 12224
Flange Connection Dimension:ASME B16.1,ASME B15.5,ASME B16.47,BS4504,GB/T 9113,JB/T 79
Test and Inspection:API 598,JB/T 9092,GB/T 13927
Pressure Temperature Rating:API 609,GB/T 12224
Product Range
Body material:Cast Iron,Ductile Iron
Nominal diameter:2"~48"(DN15~DN1200)
End Connection: Wafer,Lug,etc
Pressure range: Class150~600(PN16~PN100)
Working temperature: -10ºC~+120ºC
Operation : Handle, Gear, Electric actuator, etc

 Main Parts Materials

Flanged Centerline Di Disc Flange 4 Inch Butterfly Valve  main material of parts
BodyCast iron/Ductile Iron
Stem2Cr13,SS304,SS316,Carbon Steel
DiscDuctile Iron ,SS304,SS304L,SS316L
Hand wheelDuctile Iron

Main characteristics of the products

Small volume and light weight, easy to disassemble and maintain, and can be installed in any position.

Small pressure drops, Large flow capability.
The patent positioning technology.
Small operating torque, energy saving.
Linearity flow characteristics, the best control performance.
Simple and compact structure, 90° gyration to open quickly.
Long service life, good seal performance.


butterfly valve 2




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Q: Are you trading company or manufacturer ?
A: We are a professional valve factory Located In Wenzhou,Yongjia, China.
Q: What's Execution Standard of products?
Q: How long is your delivery time?
A: Generally it is 15 days if the goods are in stock. It is 25-30 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, Welcome sample order to test and check the quality of products. The sample amount is less than $100, the product cost is free, and the customer needs to pay the express delivery fee. If the sample amount is higher than $100, and the sample cost and express delivery fee need to be negotiated by both parties.

Q: What is your terms of payment ?
A: 30% T/T in advance ,70% balance before shipment or see copy of bill of lading.

Q: Can you OEM or ODM?
A:Yes, we have a strong research & development team. The products can be made according to your request.
Q: Can you provide the relevant documentation and certificate?
A:Yes, We can provide the international certificates and relevant chemical analysis, mechanical properties, pressure test reports according to the customers need.
Q: What is your terms of delivery?
A: We accept EXW,FOB,CIF etc.
8. How to deal with after sales ?
A: warranty time : 18months from the shipment ; and we will be responsible for all the quality problems. We will provide process guidance services, replacement parts, on-site guidance and maintenance services. (both parties shall negotiate the relevant expenses)

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