| Customization: | Available |
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| Media: | Water |
| Temperature: | Ordinary Temperature |
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Introducing our stainless steel/carbon steel flange lift check valves-precision-engineered automatic valves that ensure seamless unidirectional flow in pipelines by leveraging disc weight and medium pressure. Perfect for high-pressure or corrosive media systems, these valves excel across diverse industries such as water treatment, petrochemical, power generation, and pharmaceuticals. Discover below the detailed product features and specifications that make our valves indispensable for efficient pipeline operations:
Core Structure & Operating Principle
1. Structural Components
- Body & Bonnet: Meticulously crafted from premium stainless steel (304, 316, 316L) or robust carbon steel (WCB, WCC), with optional anti-corrosion coatings like galvanizing for enhanced durability.
- Disc (Valve Core): Designed in stainless steel or PTFE-coated; fortified with wear-resistant alloys like Stellite to endure erosion and ensure longevity.
-Guidance System: Precision-machined guide sleeves facilitate smooth vertical disc movement, eliminating risks of jamming or misalignment.
- Flange Connection: Adheres to international standards such as ANSI, DIN, JIS;
flange face types (RF/FF) are aligned with various pipeline pressure ratings for compatibility.
2. Operating Principle
- Forward Flow: The medium pressure ingeniously lifts the disc, facilitating the opening of the valve for seamless flow.
-Reverse/Zero Flow: The disc swiftly closes under the influence of gravity and backpressure, effectively preventing backflow.
Technical Specifications
- Nominal Diameter (DN): DN15-DN600, accommodating a wide range of standard industrial pipeline sizes.
- Pressure Rating: PN10-PN40 (or Class 150-Class 300), offering versatility for varying pressure demands.
- Temperature Range:
Stainless Steel: From -29°C to 425°C, adjustable based on material and seal selection.
Carbon Steel: From -29°C to 350°C, with an anti-corrosion coating as required for optimal performance.
- Compatible Media: Efficiently handles water, steam, oils, weak acids/alkalis, and gases, ensuring material compatibility for diverse applications.
Key Features
1. Reliable Backflow Prevention
Our vertical lift design promptly reacts to reverse flow, safeguarding critical equipment like pumps and compressors.
2. Corrosion Resistance & Durability
- Stainless steel is ideal for corrosive settings, while coated carbon steel enhances service longevity.
- The hard-sealed structure is engineered to withstand high temperatures, pressure, and particle erosion.
3. Low Flow Resistance
A straight-through flow path significantly reduces pressure drop, leading to lower energy consumption and operational costs.
4. Easy Maintenance
Flange connections enable hassle-free disassembly, and a removable bonnet simplifies disc cleaning and replacement.
Applications
- Water Treatment Systems: Essential for pump outlets and backflow prevention in supply and drainage networks.
- Petrochemical & Energy: Ideal for crude oil/gas pipelines and refining installations, ensuring safe operations.
- Power Generation: Suited for boiler feedwater and steam systems, enhancing energy efficiency.
- Pharmaceutical/Food: Perfect for clean media pipelines, requiring SS 316L with an electropolished finish for superior hygiene.
Selection Guide
1. Material Selection
- Stainless Steel: Choose for handling corrosive media like acids/alkalis, and in sanitary applications such as food and pharmaceuticals.
- Carbon Steel: Optimal for non-corrosive media like water, oil, and steam, suitable for cost-sensitive projects.
2. Critical Parameters
Ensure a seamless selection process by specifying the media type, temperature and pressure range, DN size, and the appropriate flange standard, such as ANSI B16.5, to guarantee compatibility and performance.
Unlock custom potential with options like austenitic stainless steel tailored for cryogenic conditions as low as -196°C, or enhance durability with guide sleeves specifically designed for particle-laden media.
Installation & Maintenance Guidelines
1. Installation
For optimal performance, align the valve body's arrow with the medium flow direction; remember, reverse installation is strictly prohibited to maintain efficiency and safety.
Our versatile design accommodates both horizontal and vertical pipelines, ensuring the disc axis stays vertical for reliable function in every orientation.
2. Maintenance
Commit to peak performance by regularly inspecting sealing surfaces for wear and meticulously removing debris from the valve cavity.
Protect your asset by routinely checking the coating integrity on carbon steel valves, especially in humid environments, to stave off rust and prolong lifespan.
3. Precautions
Safeguard your system by avoiding rapid cycling or high-velocity backflow which can lead to disc damage, ensuring longevity and reliability.
To mitigate potential water hammer effects, it is crucial to gradually start and stop systems, facilitating smooth operation and preventing damage.
| 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 |
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