Industrial-Grade Stainless Steel Threaded Check Valve
Product Description
Product Overview
Introducing our Industrial-Grade Stainless Steel Threaded Check Valve, an unparalleled automatic non-return solution expertly crafted for liquid and gas pipeline systems. This valve is a masterpiece of precision engineering, constructed from top-tier stainless steel, delivering remarkable corrosion resistance, high-pressure endurance, and thermal resilience. It's perfectly suited for grueling operations in environments such as chemical processing, petroleum, water treatment, and HVAC systems. Our valve is your trusted guardian, ensuring a unidirectional flow that safeguards vital equipment from potential backflow damage.
Construction & Design
1. Materials
- Body/Bonnet: Crafted from premium 304/316 stainless steel, boasting superior corrosion resistance for unmatched longevity
- Disc: Constructed from robust stainless steel or reinforced engineering polymer (POM), ensuring exceptional durability
- Seals: Choose from EPDM, NBR, or FKM options to ensure compatibility with a broad range of media
- Connection: Engineered with a threaded design (G/NPT/BSP standards) for a secure and reliable installation
2. Key Features
- Spring-assisted closure: Select models offer rapid response mechanisms to effectively prevent water hammer
- Low-pressure drop: The ingeniously optimized flow path design minimizes system resistance, enhancing efficiency
- Compact footprint: Space-saving design ideal for installations where space is at a premium
- Maintenance-free operation: The self-actuating mechanism ensures seamless operation without external control needs
Operating Principle
Our valve expertly operates on the principle of differential pressure. Forward flow is facilitated as fluid pressure elevates the disc, while any reverse flow automatically triggers the disc to close through gravity, spring force, or backpressure, effectively preventing backflow.
Technical Specifications
- Media Compatibility: Versatile and adaptable for water, oils, steam, gases, and mildly corrosive fluids
- Pressure Rating: Rated for 0.6-4.0 MPa, with higher ratings available to meet specific needs
- Temperature Range: Withstands temperatures from -20°C to 180°C, contingent on seal material
- Connection Sizes: Available in DN15-DN100 (½"-4"), with custom sizing available upon request
- Cracking Pressure: Adjustable in spring-assisted models, ranging from 0.05-0.1 MPa
Typical Applications
- Petrochemical: Ideal for pipeline transport and tank inlets/outlets, ensuring safety and efficiency
- Water Treatment: Perfect for pump discharges, filtration systems, and desalination processes
- HVAC: Essential for boiler feedwater and cooling circuits, enhancing system effectiveness
- Food/Pharma: Suitable for sanitary pipelines with GMP-compliant versions available
- Industrial Machinery: Optimal for compressors, hydraulic systems, and fire protection
Product Advantages
1. Superior Reliability: With corrosion-resistant construction, experience leak-free performance every time
2. Reduced Maintenance: The innovative self-operating design significantly reduces service requirements
3. Broad Compatibility: Designed to cater to a wide range of media and piping standards
4. System Protection: Spring-assisted models offer a safeguard against hydraulic shock
Installation & Maintenance
- Orientation: Ensure installation with the flow arrow aligned with media direction for optimal operation
- Maintenance: Regularly inspect disc movement and seal integrity to maintain peak performance
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.