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Ductile Iron Flange Silent Check Valve

The Ductile Iron Flange Silent Check Valve (also called a non-return valve or one-way valve) is widely used in water supply and drainage, fire protection, HVAC, industrial circulating water, and petrochemical systems. It is typically installed at pump outlets to protect pumps and downstream equipment (such as valves, meters, and impellers) from backflow and water hammer damage.
• Size:DN50 - DN200
• Material:Ductile Iron
• Working Pressure:1.6MPa
• Type:Silent Check Valve
• MOQ:200 pieces

Product category:

Check Valve

Email:

linhaifeng117@gmail.com

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Product Details

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Production Description

Ductile Iron Flange Silent Check Valve (also called a non-return valve or one-way valve) is an automatic valve that relies on the medium’s own flow to open/close its disc, preventing medium backflow. It also avoids pump/motor reverse rotation and medium leakage from containers, serving as a key protective component in pipeline systems.This valve balances silent operation, water hammer protection, and durability, making it a core component for reliable medium control in diverse pipeline systems.

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Products Features

1.Silent Operation & Water Hammer Prevention: Streamlined internal flow channels plus a fast-closing disc minimize pressure surges during pump shutdown, significantly reducing water hammer noise (achieving “silent closing”).
2.Low Flow Resistance: Optimized designs (such as “waist drum”-shaped valve bodies or streamlined fluid directors) reduce pressure loss, ensuring efficient medium flow.
3.Durability & Reliability: Ductile iron offers high strength while remaining lightweight; rubber-stainless steel sealing pairs resist wear and erosion; stainless steel springs and coated bodies extend service life (cycle life often exceeds 100,000 operations).

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Product Parameter

Product name	Non Return Valve
media	Water
temperature of media	Normal Temperature
customized support	OEM, ODM
Material	Duction Iron
Working pressure	1.6Mpa
power	Manual
structure	Regulating

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FAQ

Q: 1. What is the MOQ ?
A: The minimum order quantity is 200 pieces. It can be adjusted based on project scale and cooperation needs.
Q: 2. Do you provide customized services ?
A: Yes, we offer customized production to meet specific requirements，Contact our sales team for detailed consultation.
Q: 3. What are the delivery terms?
A: We usually adopt EXW and FOB terms. Flexible adjustments—such as switching to CIF or DAP—can be made according to customer needs and shipping arrangements.

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With more than 15 years of experience serving clients, we have developed extensive expertise and in-depth industry knowledge, enabling us to deliver reliable and effective solutions tailored to your requirements.
We provide professional technical support and customized service offerings. Our committed technical team is available to assist you with product consultation, installation guidance, and comprehensive after-sales support whenever necessary.
At Sheng Feng Fire, our professionals are dedicated to helping you select the most suitable products based on your specific needs.
Please do not hesitate to contact us for further information！