Grooved end swing check valve

The groove-end swing check valve is the "unidirectional protective core device" for terminal pipeline networks in fire protection, water supply and drainage, and industrial circulating water systems. With its core design featuring a "swing disc + grooved connection," it integrates four key values: "backflow prevention, water hammer resistance, quick installation, and long service life." It is specifically designed to address pain points such as media backflow in terminal pipelines, water hammer impact, and inefficient installation.
Operating through a purely mechanical structure for automatic opening and closing, it requires no power supply or complex control systems, serving as an "invisible safety gate" that ensures terminal equipment safety, media cleanliness, and stable system operation. Widely used in scenarios like fire protection branch pipelines, building water supply points, and industrial circulating water terminals, it is an indispensable foundational protective component in modern fluid delivery systems.

● Parameter Item：Specification Range/Description
● Pressure Rating：Import pressure range: 0.1~1.6MPa (conventional type)
● Valve Body：Ductile iron / Stainless steel
● Swing Check Valve Disc：304 stainless steel (conventional type)
● Medium Requirements：Clean water (impurity particle size ≤1mm), pH value 6~9 (rubber sealing seat); ≤12 (PTFE sealing seat)
● Medium Temperature：-20℃~120℃ (NBR seal); -40℃~150℃ (EPDM / PTFE seal)
● Ambient Temperature：-30℃~70℃ (For outdoor types, sunproof/frost - proof covers shall be installed to prevent groove icing or plastic aging)
● OEM Service：Accepted
● Delivery Terms：FOB, CFR, CIF, EXW
● Payment Mode：T/T, L/C, PayPal, Western Union

Product category:

Check Valve

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linhaifeng117@gmail.com

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Product Details

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Product Formation

The groove-end swing check valve is a critical protective device in fire protection and water supply/drainage systems, specifically designed to prevent media backflow and mitigate water hammer effects. Its defining features include a "swing disc" mechanism and "grooved connection" technology, offering advantages such as rapid installation, reliable sealing, and strong impact resistance. Widely used in fire protection terminal pipe networks, building water supply branch pipes, and industrial circulating water systems, it serves as the "terminal safety lock" to safeguard downstream equipment and prevent contamination or energy loss.

The groove-end swing check valve integrates "swing structure + grooved connection" as its core, combining the three major advantages of "one-way protection," "quick installation," and "long lifespan with zero maintenance." It serves as a key protective device in end-pipeline systems, embodying "small size, big impact." With mechanical reliability, it ensures the safety of firefighting and water supply/drainage systems at their endpoints, guaranteeing that "every drop of water flows forward, never backward," thus safeguarding the system's stable operation and the cleanliness and safety of the medium.

KEY WORDS： Swing Type Grooved Check Valve，Groove type check valve end type，Grooved connection check valve，Anti-backflow groove check valve，China, manufacturers, suppliers, wholesale, factory.

Other Classifed Products：

Fire Hose Categories, Fire Sprinkler System, Fire Protection Valve , Fire Hose Reel&Cabinet , Fire Foam Equipment，Fire Nozzle and Fire Monitor , Fire Hydrant , UL/FM Fire Fighting Equipment , Brass Valve Categories , Fire Extinguisher Series .

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Product Features

The groove-end swing check valve serves as the "one-way protection core" of terminal pipe networks. Its features are tightly centered around "efficient backflow prevention, quick installation, and long maintenance-free service life," perfectly meeting the demands of "safety, reliability, and convenience" for terminal pipelines in scenarios such as firefighting, water supply and drainage, and industrial circulating water systems. Below are its core features:

Large opening angle, low fluid resistance: The swing disc design provides an opening angle of ≥60° (far exceeding the 15°–30° of lift check valves), ensuring minimal obstruction during forward flow. The pressure loss is ≤0.03MPa (DN100 model), guaranteeing sufficient flow for terminal water equipment (e.g., hydrants, sprinklers).
Dual-driven closure by gravity + medium pressure, fast response: During reverse flow or sudden upstream pressure drop, the disc quickly reseats under gravity and reverse medium pressure, with a closure time of ≤0.3 seconds—significantly faster than lift check valves (≥1 second). This reduces water hammer impact peaks by 40%–60%, preventing terminal pipeline vibrations and equipment damage (e.g., fire pump cavitation, water meter deviations).
Metal hard seal + elastic soft seal, dual protection: The disc sealing surface is overlaid with Stellite alloy (wear-resistant, high-temperature resistant), while the valve body seat uses nitrile rubber/PTFE (elastic compensation, aging-resistant). Upon closure, a composite seal of "metal-to-metal + elastic compression" is formed, with leakage ≤0.01% of rated flow (ANSI FCI 70-2 Class V), completely eliminating backflow.
Impact-resistant and wear-resistant, maintenance-free with long service life—A "durability champion" for extreme conditions.
Versatile application, flexible adaptation—A "terminal safety guardian" for multiple fields.

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Product Parameter

Parameter Item	Specification Range/Description
Pressure Rating	Import pressure range: 0.1~1.6MPa (conventional type)
Valve Body	Ductile iron / Stainless steel
Swing Check Valve Disc	304 stainless steel (conventional type)
Medium Requirements	Clean water (impurity particle size ≤1mm), pH value 6~9 (rubber sealing seat); ≤12 (PTFE sealing seat)
Medium Temperature	-20℃~120℃ (NBR seal); -40℃~150℃ (EPDM / PTFE seal)
Ambient Temperature	-30℃~70℃ (For outdoor types, sunproof/frost - proof covers shall be installed to prevent groove icing or plastic aging)

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FAQ

Q: Can you accept sample order?

A: Yes, we accept samples with little and reasonable charge.But need customer pay sample fees and transport fees first.

Q: What is your payment terms?
A: Payment supports T/T, L/C, etc.

Q: How can l get my order?
A: We will send you the goods by UPS,DHL,FedEx,Oversea Shipment or other forwarder, all with tracking number.

Q: Why choose us?
A： With over 15 years of experience in the fire protection industry, our company has professional technical personnel and many well-known partners in the domestic market. We offer favorable prices and guarantee quality, having passed multiple certifications!

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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！