Stainless Steel/Carbon Steel Flange Lift Check Valve

Product Description

Stainless Steel/Carbon Steel Flange Lift Check Valve, meticulously crafted by Wenzhou Safety Stainless Steel Co., Ltd., is a pinnacle of engineering excellence. This robust valve is designed to ensure seamless fluid control, offering unparalleled reliability and peak performance. Ideal for a diverse array of industries, it stands as a testament to superior quality and innovative design.

Product Description

Introducing the Stainless Steel/Carbon Steel Flange Lift Check Valve-a sophisticated, automatic marvel engineered to prevent the unwanted reverse flow in pipelines. Crafted to leverage disc weight and medium pressure for one-way flow control, this valve is the go-to solution for high-pressure environments and systems dealing with corrosive media. Whether in water treatment, petrochemical, power generation, pharmaceuticals, or allied sectors, this valve stands out as an indispensable ally. Explore the comprehensive product features below:


Core Structure & Operating Principle
1. Structural Components
- Body & Bonnet: Meticulously constructed from high-grade stainless steel (304, 316, 316L) or robust carbon steel (WCB, WCC), enhanced with optional anti-corrosion coatings such as galvanizing for carbon steel applications.
- Disc (Valve Core): Designed with stainless steel or a PTFE coating, featuring sealing surfaces that are hard-faced with highly durable alloys like Stellite, offering exceptional resistance to erosion.
- Guidance System: The precision-engineered guide sleeves ensure flawless vertical disc movement, effectively preventing any jamming or misalignment.
- Flange Connection: Tailored to comply with ANSI, DIN, and JIS standards;
flange face types (RF/FF) ensure perfect harmony with pipeline pressure ratings.

2. Operating Principle
- Forward Flow: Harnesses medium pressure to elegantly lift the disc, seamlessly opening the valve.
- Reverse/Zero Flow: The disc swiftly closes under the influence of gravity and backpressure, effectively blocking any backflow.



Technical Specifications
- Nominal Diameter (DN): Ranging from DN15 to DN600, accommodating standard industrial pipeline sizes with ease.
- Pressure Rating: Spanning PN10 to PN40 (or Class 150 to Class 300);
- Temperature Range:
Stainless Steel: -29°C to 425°C, subject to material and seal specifications.
Carbon Steel: -29°C to 350°C, necessitating an anti-corrosion coating for optimal performance.
- Compatible Media: Designed for water, steam, oils, weak acids/alkalis, and gases, with material compatibility ensured.



Key Features
1. Reliable Backflow Prevention
The vertical lift design guarantees an immediate response to reverse flow, safeguarding pumps, compressors, and other critical equipment.
2. Corrosion Resistance & Durability
- Stainless steel construction makes it ideal for corrosive settings, while coated carbon steel substantially extends its service life.
- The hard-sealed configuration withstands the extremities of high temperatures, pressure, and particle erosion.
3. Low Flow Resistance
The straight-through flow design minimizes pressure drop, significantly reducing energy consumption.
4. Easy Maintenance
Flange connections enable quick disassembly, and a removable bonnet allows for seamless disc cleaning or replacement.


Applications
- Water Treatment Systems: Essential for pump outlets and crucial in backflow prevention in supply and drainage networks.
- Petrochemical & Energy: Perfectly suited for crude oil and gas pipelines, as well as refining installations.
- Power Generation: Ideal for boiler feedwater and steam system applications.
- Pharmaceutical/Food: Made for clean media pipelines, requiring SS 316L with an electropolished finish for optimal hygiene.


Selection Guide
1. Material Selection
- Stainless Steel: Best for handling corrosive media such as acids and alkalis, and vital for sanitary applications in food and pharmaceuticals.
- Carbon Steel: Suitable for non-corrosive media like water, oil, and steam, making it a cost-effective choice for budget-conscious projects.
2. Critical Parameters
- To tailor this product to your specific needs, please specify the media type, temperature/pressure range, DN size, and preferred flange standard (e.g., ANSI B16.5) to ensure optimal compatibility and performance.
- Customization options are available, including the use of austenitic stainless steel for operations in cryogenic conditions down to -196°C, and the incorporation of guide sleeves for handling particle-laden media efficiently.


Installation & Maintenance
1. Installation
- Ensure that the arrow on the valve body aligns perfectly with the flow direction of the medium; **reverse installation is strictly prohibited** to maintain system integrity.
- This valve is adaptable for both horizontal and vertical pipelines; however, it is essential that the disc axis is maintained in a vertical orientation for optimal operation.
2. Maintenance
- Conduct regular inspections of the sealing surfaces to check for any wear and promptly remove any debris from the valve cavity to ensure long-lasting performance.
- It is crucial to verify the integrity of the coating on carbon steel valves, especially in humid environments, to effectively prevent rust and maintain durability.
3. Precautions
- To prevent potential damage to the disc, avoid rapid cycling and high-velocity backflow conditions.
- Initiate and cease systems gradually to effectively mitigate the effects of water hammer and ensure smooth operation.
 

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.