Reliable Carbon Steel Swing Check Valve for Oil and Water Applications

Product Description

Presenting the Stainless Steel/Carbon Steel Flange Lift Check Valve, a marvel of engineering precision and durability. Crafted with the utmost care, this valve is designed to seamlessly manage the flow of fluids, ensuring optimal performance in a variety of settings. Whether in industrial applications or critical infrastructure, this valve stands as a testament to reliability and excellence in fluid control solutions.

Product Description

Discover the unparalleled reliability and innovation crafted in our stainless steel and carbon steel flange lift check valves. Engineered to perfection, these automatic valves are masters in preventing reverse flow across your pipeline systems. Harnessing the power of disc weight and medium pressure, they assure unidirectional flow control, making them indispensable for high-pressure or corrosive environments, especially in the realms of water treatment, petrochemical, power generation, and pharmaceuticals. Dive into the details below to explore the exceptional features that these valves bring to your industrial applications:


Core Structure & Operating Principle
1. Structural Components
- Body & Bonnet: Impeccably crafted from the finest stainless steel (304, 316, 316L) or robust carbon steel (WCB, WCC). Elevate durability with optional anti-corrosion coatings, including galvanizing for carbon steel.
- Disc (Valve Core): Purposefully designed with stainless steel or PTFE coatings, these discs boast sealing surfaces reinforced with wear-resistant alloys like Stellite, ensuring they stand up to erosion.
- Guidance System: Experience seamless performance with precision-machined guide sleeves that guarantee smooth, vertical disc movement while eliminating jamming and misalignment.
- Flange Connection: Adheres to ANSI, DIN, and JIS standards with unparalleled precision.
Flange face types (RF/FF) are engineered to align perfectly with pipeline pressure ratings.

2. Operating Principle
- Forward Flow: The powerful medium pressure elegantly lifts the disc, effortlessly opening the valve for a seamless flow.
- Reverse/Zero Flow: Witness the rapid and reliable closure of the disc, driven by gravity and backpressure, to effectively block any unwanted backflow.



Technical Specifications
- Nominal Diameter (DN): DN15-DN600, accommodating a comprehensive range of standard industrial pipeline sizes.
- Pressure Rating: PN10-PN40, or opt for Class 150-Class 300, tailored to meet diverse operational demands.
- Temperature Range:
Stainless Steel: Withstands conditions from -29°C to 425°C, varying with material and sealing elements.
Carbon Steel: Endures temperatures from -29°C to 350°C, provided with a protective anti-corrosion coating.
- Compatible Media: Designed for versatility, capable of handling water, steam, oils, weak acids/alkalis, and gases, necessitating material compatibility.



Key Features
1. Reliable Backflow Prevention
Ingeniously crafted with a vertical lift design for a swift response to reverse flow, ensuring the safeguarding of pumps, compressors, and vital equipment.
2. Corrosion Resistance & Durability
- Stainless steel is the ideal choice for corrosive environments, while coated carbon steel ensures extended service life.
- The rugged hard-sealed structure triumphs over high temperatures, pressure, and particle erosion.
3. Low Flow Resistance
Designed with a straight-through flow path to significantly minimize pressure drop and optimize energy consumption.
4. Easy Maintenance
Flange connections facilitate quick disassembly, while the removable bonnet allows for effortless disc cleaning and replacement.


Applications
- Water Treatment Systems: The perfect choice for pump outlets and backflow prevention in supply and drainage networks.
- Petrochemical & Energy: From crude oil and gas pipelines to refining installations, these valves excel in demanding environments.
- Power Generation: Reliable performance in boiler feedwater and steam systems.
- Pharmaceutical/Food: Ideal for clean media pipelines, requiring SS 316L with an electropolished finish for optimal sanitary conditions.


Selection Guide
1. Material Selection
- Stainless Steel: Perfectly suited for handling corrosive media such as acids and alkalis, as well as sanitary applications in the food and pharmaceutical sectors.
- Carbon Steel: A cost-effective solution for non-corrosive media including water, oil, and steam, ideal for budget-conscious projects.
2. Critical Parameters
- Clearly define the type of media, including its temperature and pressure range. Specify the DN size alongside the flange standard (such as ANSI B16.5) for optimal compatibility and performance.
- Explore tailored options: Choose austenitic stainless steel for challenges posed by cryogenic conditions reaching as low as -196°C. Opt for guide sleeves to ensure seamless operation in environments with particle-laden media.


Installation & Maintenance
1. Installation
- Ensure the valve body arrow is perfectly aligned with the medium flow direction; **reverse installation is strictly prohibited** to maintain optimal performance.
- Versatile for both horizontal and vertical pipelines, provided the disc axis remains vertical to ensure efficient functionality.
2. Maintenance
- Conduct regular inspections to assess the sealing surfaces for any wear. Promptly remove debris within the valve cavity to maintain longevity and efficiency.
- In humid environments, consistently check the coating integrity of carbon steel valves to avert rust and ensure durability.
3. Precautions
- To prevent damage to the disc, avoid scenarios involving rapid cycling or high-velocity backflow.
- Initiate or shut down systems gradually to effectively mitigate any potential effects of water hammer.
 

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.