Industrial-Grade Stainless Steel Threaded Check Valve
Product Description
Product Overview
Introducing our top-tier industrial-grade stainless steel threaded check valve - the epitome of reliability and efficiency for liquid and gas pipeline systems. Crafted from the finest stainless steel, this valve boasts exceptional corrosion resistance, superior high-pressure tolerance, and remarkable thermal stability. It's tailor-made for the most demanding environments, including chemical processing, petroleum, water treatment, and HVAC systems. Its advanced design guarantees unidirectional flow, safeguarding your vital equipment against the perils of backflow damage.
Construction & Design
1. Materials
- Body/Bonnet: Crafted from 304/316 stainless steel, delivering unbeatable corrosion resistance
- Disc: Available in stainless steel or reinforced engineering polymer (POM), ensuring long-lasting durability
- Seals: Choose from EPDM, NBR, or FKM options to match your media compatibility needs
- Connection: Features threaded (G/NPT/BSP standards) connections for secure and easy installation
2. Key Features
- Spring-assisted closure: Offered in select models to ensure swift response and effectively prevent water hammer
- Low-pressure drop: Ingeniously designed flow paths minimize system resistance, promoting efficiency
- Compact footprint: The space-saving design is perfect for installations with limited space
- Maintenance-free operation: Self-actuating mechanism eliminates the need for external control or frequent maintenance
Operating Principle
Harnessing the power of differential pressure, this valve operates seamlessly as fluid pressure lifts the disc, allowing forward flow. In contrast, reverse flow automatically closes the disc through gravity, spring force, or backpressure, effectively preventing any backflow.
Technical Specifications
- Media Compatibility: Versatile enough for water, oils, steam, gases, and mildly corrosive fluids
- Pressure Rating: Spanning from 0.6 to 4.0 MPa, with options for higher ratings available
- Temperature Range: Operates efficiently from -20°C to 180°C, depending on your choice of seal material
- Connection Sizes: Available in DN15-DN100 (½"-4"), with custom sizes offered upon request
- Cracking Pressure: Adjustable between 0.05-0.1 MPa, especially in spring-assisted models
Typical Applications
-Petrochemical: Ideal for pipeline transport, tank inlets, and outlets
-Water Treatment: Perfect for pump discharges, filtration systems, and desalination projects
-HVAC: Suitable for boiler feedwater systems and cooling circuits
-Food/Pharma: GMP-compliant versions available for sanitary pipelines
-Industrial Machinery: Ideal for compressors, hydraulic systems, and fire protection applications
Product Advantages
1.Superior Reliability: Built with corrosion-resistant materials to ensure leak-free, dependable performance
2.Reduced Maintenance: Innovative self-operating design minimizes the need for frequent service
3.Broad Compatibility: Engineered to be compatible with a wide range of media and piping standards
4.System Protection: Spring-assisted models actively mitigate hydraulic shocks, enhancing system safety
Installation & Maintenance
-Orientation: Ensure proper installation by aligning the flow arrow with the media direction
-Maintenance: We recommend periodic inspections of disc movement and seal integrity for optimum 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.