Silence Check Valve

Your Professional Silence Check Valve Manufacturers

FOINBO, founded in 2014, is a fire equipment company that has been leading the way in providing reliable and state-of-the-art firefighting equipment to clients across various industries. Offering products at competitive prices is our ongoing pursuit. Our primary goal is to ensure that people, properties, and businesses are protected from the devastating effects of fire.

Quality Assurance: ISO 9001 certified; our 12-step inspection process ensures a defect rate of less than 0.3%.

Eco-Conscious: Fully compliant with RoHS/REACH; 100% biodegradable packaging by 2024.

Pre-sales Support: As a fire equipment provider, we proactively communicate with customers during the pre-sales process to understand their needs and requirements, offer professional advice and recommendations, and help them choose the most suitable products.

Advantages of Silence Check Valve

Eliminates Water Hammer

Spring-loaded closure prevents sudden reverse flow, reducing pressure spikes and protecting system components.

Quiet Operation

Designed for sound-sensitive environments (hospitals, residential buildings, hotels), this valve operates with little to no noise during shut-off.

Compact Structure, Flexible Installation

Compared to swing check valves, silent models are more compact and can be installed horizontally or vertically (based on specific models).

Prevents Backflow Contamination

Rapid closure ensures no reverse flow, avoiding contamination or system malfunction.

Low Maintenance

With a simple, robust internal structure and fewer moving parts, these valves offer high durability and low maintenance costs.

Application of Silence Check Valve

Water Supply Systems: In high-rise buildings or long-distance water supply pipelines, the silent check valve can effectively prevent water hammer. Water hammer is caused by pressure fluctuations due to the sudden closing or opening of valves, which can damage pipelines and equipment. The design of the silent check valve allows it to close slowly, reducing the occurrence of water hammer.

Pumping Stations: Using a silent check valve at the inlet and outlet of a pump can prevent backflow and protect pumps and other equipment from damage due to backflow. Its silent operation can help prevent noise pollution in the pumping station, improving the comfort of the operating environment.

HVAC Systems (heating, ventilation, and air conditioning systems): Using a silent check valve in these systems can prevent fluid from flowing back in the system, ensuring the efficient operation of the system and preventing damage to equipment.

Industrial Process Control: In certain precise industrial processes, silent fluid control and preventing backflow are crucial. The design of the silent check valve can provide smooth fluid control, reducing vibration and noise.

Silence Check Valve

productcate-456-398

Product Description

Material

Body/lineG	QT500-7,GGG50 with internal and external epoxy resin coating
Disc	Stainless steel,CF8,GGG50 or Casting Steel
Guiding Stem/Spring	1Cr17Ni2,1Cr18Ni9Ti,Stainless Steel
Guiding bushing	ZCuAl10Fe3 Bronze ZCuAl10Fe3
Flange washer	NBR,EPDM,FPM

Technical Data

Design Standard	GB21387
Flange standard	EN1092-2/GB17241.6
Face to face dim	EN5752 serie10/GB12221
Testing standard	EN1074-2/EN12266-1/GB13927
Sealing	Rubber
DN	50~300
PN	1.0/1.6/2.5 Mpa
Working temp.	NBR≤80ºC/EPDM≤120ºC
Drive mode	Damper
Connecting	Flange
Coating	Epoxy

Delivery

Selling units	Single item
Single package size	15X10X10 cm
Single gross weight	5.000 kg

Packaging & Shipping

productcate-394-299

productcate-565-412

FAQ

Q: Can I have a sample order for valve?

A: Yes, we welcome sample order to test and check quality.Mixed samples are acceptable.

Q: Do you have any MOQ limit for valve order?

A: Low MOQ, 1pc for sample checking is available

Q: Can you do the design for us?

A: Yes.Please send us high resolution images,your logo and other materials needed . We will send you finished files for confirmation.

Q: What are your payment terms?

A: T/T (30% as desposit, the rest 70% will be paid before delivery), L/C at sight.

Q: Can I have my own Logo on the product?

A: Yes, you can send us your drawing and we can make your logo, but you have to bear their own the cost.

Q: Are silent check valves easy to install?

A: Silent check valves are easy to install. Most of them incorporate threaded or flanged types, allowing easy mounting to the piping. However, choosing the right type of valve concerning the system conditions will achieve the desired flow direction and backflow prevention. Inline and welded types require special consideration and handling.

Q: What maintenance do silent check valves require?

A: Silent check valves demand little maintenance due to their simple working method. But operational checks from time to time should be done to ensure no obstructions or wear occur, which will decrease the flow efficiency. This is particularly critical in high-demand industries. Also, it is worth mentioning that silence check valves with detachable bodies are easy to replace and will not cause much interruption in the ongoing workflow.

Q: What is the difference between a silent check valve and a non slam check valve?

A: Silent check valves, also known as non-slam check valves and spring-assisted check valves reduce or eliminate water hammer and its effects. Water hammer refers to the high-pressure shock waves that occur when the flow of fluid abruptly stops (due to pump shut down or a valve disc quickly closing) in a piping system.

As one of the leading silence check valve manufacturers and suppliers in China, we warmly welcome you to wholesale cheap silence check valve from our factory. All our products are with high quality and competitive price.

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