Industrial-Grade Stainless Steel Threaded Check Valve
Product Description
Product Overview
Discover unparalleled reliability with our industrial-grade stainless steel threaded check valve, a premium solution crafted for excellence in automatic non-return functionalities. Engineered for enduring performance in liquid and gas pipeline systems, it is meticulously constructed from superior stainless steel, ensuring remarkable corrosion resistance, robustness under high pressure, and impeccable thermal stability. This makes it an ideal choice for rigorous applications across chemical processing, petroleum industries, water treatment facilities, and HVAC systems. The valve guarantees seamless unidirectional flow, safeguarding your critical equipment from the risks of backflow damage, all while operating with precision and efficiency.
Construction & Design
1. Materials
- Body/Bonnet: Crafted from 304/316 stainless steel, offering unparalleled corrosion resistance and longevity.
- Disc: Engineered using stainless steel or reinforced engineering polymer (POM) for exceptional durability.
- Seals: Available in EPDM, NBR, or FKM options to ensure compatibility across diverse media.
- Connection: Designed with threaded options (G/NPT/BSP standards) for secure and reliable installation.
2. Key Features
- Spring-assisted closure: Offered in select models to ensure rapid response and prevent water hammer for enhanced system integrity.
- Low-pressure drop: The optimized flow path design significantly reduces system resistance, enhancing operational efficiency.
- Compact footprint: Engineered with a space-saving design, perfect for installations with spatial constraints.
- Maintenance-free operation: Features a self-actuating mechanism, eliminating the need for external control and reducing maintenance demands.
Operating Principle
The valve functions based on differential pressure: As fluid pressure lifts the disc, it allows forward flow, while reverse flow automatically initiates closure. This closure is driven by gravity, spring force, or backpressure, effectively preventing backflow and ensuring system integrity.
Technical Specifications
- Media Compatibility: Suitable for use with water, oils, steam, gases, and mild corrosive fluids, offering versatile application.
- Pressure Rating: Ranges from 0.6 to 4.0 MPa, with higher ratings available for demanding applications.
- Temperature Range: Designed to operate between -20°C to 180°C, contingent on seal material, for diverse environments.
- Connection Sizes: Available in DN15-DN100 (½"-4"), with custom sizes available upon request for specific needs.
- Cracking Pressure: Adjustable in spring-assisted models, this ranges from 0.05 to 0.1 MPa, ensuring optimal performance.
Typical Applications
-Petrochemical: Ideal for pipeline transport and tank inlets/outlets, enhancing operational flow.
-Water Treatment: Perfect for pump discharges, filtration systems, and desalination processes, ensuring efficiency.
-HVAC: Essential for boiler feedwater and cooling circuits, optimizing system performance.
-Food/Pharma: Suitable for sanitary pipelines with GMP-compliant versions available to meet stringent standards.
-Industrial Machinery: Enhances the functionality of compressors, hydraulic systems, and fire protection setups.
Product Advantages
1.Superior Reliability: Crafted with corrosion-resistant materials to ensure leak-free performance and long-term durability.
2.Reduced Maintenance: Designed for self-operating performance, thus minimizing the need for regular service and lowering operational costs.
3.Broad Compatibility: Versatile design accommodates diverse media and piping standards, making it a universal choice.
4.System Protection: Spring-assisted models effectively mitigate hydraulic shock, safeguarding your systems.
Installation & Maintenance
-Orientation: Ensure installation with the flow arrow aligned to the media direction for optimal performance.
-Maintenance: Regular inspection of disc movement and seal integrity is recommended to maintain peak operational efficiency.
Detailed Photos





Product Parameters
Working pressure |
PN16 |
Suitable medium |
Water, gas, air and some corrosive liquid |
Investment |
Casting body and cap |
Delivery time |
Usual 15 days |
Shipping port |
NingBo,YiWu |
Company Profile





Certifications

FAQ
Q:How do you pack?
A:Plastic bags-------(Paper boxes)-------Cartons-------Plywood cases
Q:How long is the quality guarantee period?
A:We supply 6 to 12 months for quality guarantee according to customers' using frequency.
Q:How can you guarantee the quality of products?
A:First of all, we have the numerical control device to manufacture products accurately. Then our quality inspectors will test products one by one to make sure every flange or fitting we sell is qualified.
Q:How can I check your factory situation while it's difficult for me to come to China.
A:We have photos and videos on our website, It shows every step of the manufacturing.
Alternatively, I can take videos or photos of our factory and send them to you.
Q:What is your lead time?
A:It's around 15 days normally. If we have the products in stock, it will be about 5days.
Q:Can you print our Logo on the valves/Fittings?
A:Yes, we can totally produce products according to your this kind special request, even manufacture it based on your drawing
Q:Are samples available to be sent with free?
A:It depends on what product you need. There are hundreds of products we sell. You can contact us for particular answer.
Q:Do you have a minimum quantity of the products?
A:No, we will build business with you with even 1pc. We believe this cooperation will be a long-term relationship for our high quality, competitive price and good after-sale service.
Q:Where are the main markets for your products?
A:We hope to make business with companies from all over the world. And for now, our flanges and fittings have been exported to especially in North America, South America, South Asia, Europe and Middle East.
Q:Are you a factory or trading company?
A:We are a factory specialized in manufacturing flange and fitting over 10 years.