Crafted for industries demanding robustness, our vertical check valve is built to meet the highest standards. Choose between the enduring resilience of Stainless Steel or the robust functionality of Carbon Steel Flange. Discover the vertical check valve innovation that ensures seamless operation across demanding environments.
Product Description
Structure & Working Principle
Design Features:
Ingenious Lift-type Design: The disc elegantly moves along the valve's vertical axis, making it perfect for vertical setups.
Innovative Spring-assisted Sealing: Designed for quick adaptability to pressure changes. Select models boast enhanced springs for horizontal use.
Operation:
Engineered Closed by Default: Ensures the valve remains secure in the absence of flow, enhancing system reliability.
Forward Flow Dynamics: The inlet pressure triumphs over spring resistance, granting smooth, uninterrupted flow.
Reverse Flow Protection: The interplay of spring tension and backpressure reliably seals the disc, thwarting backflow.
Key Specifications
Pressure Rating: Ranging from PN16 to PN40 (150LB-300LB), adaptable for various system needs.
Temperature Range:
- Carbon steel (WCB): Efficient up to 425°C for water, oil, and steam.
- Stainless steel (304/316): Optimal performance up to 200°C in corrosive environments.
Materials & Standards
- Body Materials:
- Select from Carbon steel (WCB) or the reliable Stainless steel (304/316) for diverse applications.
Dimensions & Connection
-Nominal Diameter (DN): From DN15 to DN350, catering to a broad spectrum of requirements.
-Connection Type: Flange (RF/FF) for secure and flexible installations.
Applications
- Media: Handles water, steam, oils, mild acids like nitric acid, and strong corrosives such as acetic acid.
- Industries:
- Oil & Gas: Ensures precise unidirectional flow control for safety and efficiency.
- Pharmaceutical: A vital component in preventing backflow contamination, safeguarding product integrity.
- Power Plants: Essential for protecting boiler feedwater, maintaining system integrity.
- Wastewater Treatment: Optimizes pump discharge lines, enhancing operational efficiency.
Installation & Maintenance
- Installation: Vertical mounting ensures gravity-augmented sealing; pipeline cleanliness is paramount.
- Maintenance:
- Regular inspections of springs and sealing surfaces are recommended for sustained performance.
- Vigilantly monitor for thermal fatigue in high-temperature applications to ensure longevity.
Detailed Photos





Product Parameters
Working pressure |
PN16~PN40 OR 150LB~300LB |
Suitable medium |
Water, gas, air and some corrosive liquid |
Investment |
Casting body and cap |
Delivery time |
Usual 15 days |
Shipping port |
NingBo,YiWu |
Certifications

Company Profile





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.