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H74
NIPO
Forged body construction ensures superior structural integrity and high-pressure endurance.
Triple O-ring sealing mechanism provides zero-leakage closure and prevents fluid escape.
Ultra-compact sandwich profile minimizes installation footprint for volume procurement projects.
At the heart of this component lies a precisely balanced swing disc that operates with a quiet, fluid motion. As the forward flow initiates, the disc swings open smoothly, minimizing pressure drop and allowing the media to pass with negligible resistance. The instant the flow ceases or attempts to reverse, the disc seats itself with a firm, definitive closure. This action is cushioned and sealed by a proprietary three O-ring configuration, eliminating the harsh metallic clatter typical of standard metal-seated valves while ensuring an impenetrable barrier against fluid escape. Whether your facility processes volatile gases, high-temperature steam, or abrasive neutral media, this valve integrates seamlessly into your system, providing operators with the peace of mind that comes from absolute containment and consistent, maintenance-free operation over an extended lifecycle.
To ensure precise integration into your existing fluid management systems, we provide comprehensive technical specifications for our single disc swing check valve. Every parameter has been rigorously verified through advanced metallurgical testing and fluid dynamic simulations. From extreme cryogenic applications to high-heat steam processes, the data below outlines the exact operational thresholds, material capabilities, and testing standards this valve meets. By consulting these specifications, engineers and procurement specialists can confidently verify compatibility with their specific pressure classes, media types, and dimensional requirements.
Parameter | Specification |
|---|---|
Product Name | Sandwich Type Single Disc Swing Check Valve |
Body Material | Forging Body (Carbon Steel / Stainless Steel) |
Connection Type | Wafer / Sandwich Type |
Structure | Single Disc Swing |
Sealing Design | Three O-rings |
Nominal Pressure | Class 150LB |
Temperature (Carbon Steel) | -29℃ to +425℃ |
Temperature (Stainless Steel) | -196℃ to +455℃ |
Suitable Media | Water, steam, oil, gas, and neutral media |
Shell Test | 1.5 × PN |
Seat Tightness Test | 1.1 × PN |
Size Range | DN50 - DN600 / 1/2"" - 24"" |
Applicable Standards | API, ANSI, DIN, JIS |
Please refer to the dimensional charts below for exact face-to-face measurements and outer diameter sizing across different pressure ratings and international standards.
Upgrading your pipeline infrastructure with our specialized swing check valve translates directly into enhanced operational uptime and reduced maintenance overhead. By focusing on critical failure points common in standard valves, we have engineered a solution that actively protects your downstream equipment while streamlining the installation process for your engineering teams.
Zero-Leakage Assurance: The integration of three distinct O-rings creates a redundant sealing mechanism, drastically reducing the risk of fugitive emissions or fluid loss, which protects your bottom line and ensures stringent environmental compliance.
Space-Optimized Architecture: The ultra-slim sandwich profile requires a fraction of the face-to-face space compared to traditional flanged check valves, allowing for highly compact skid designs and easier retrofitting in tight quarters.
Rapid Response Dynamics: The lightweight, precision-machined single disc reacts instantaneously to flow reversal, mitigating the destructive shockwaves of water hammer and preserving the structural integrity of your entire piping network.
Frictionless Operation: Engineered with a specialized hinge mechanism, the disc swings with minimal mechanical friction, ensuring a lower cracking pressure and significantly reducing energy loss across the pipeline system.
Simplified Maintenance: The straightforward wafer-style mounting allows technicians to quickly isolate, unbolt, and remove the valve from the line for inspection, cutting down on facility downtime during scheduled turnarounds.
To fully understand the value this valve brings to your industrial operations, it is essential to examine its core engineering dimensions. Each aspect of its design has been optimized to resolve specific challenges faced by modern fluid handling facilities.
Utilizing a high-strength forging body elevates this valve far beyond conventional cast alternatives. The forging process aligns the grain structure of the metal, resulting in exceptional density, superior mechanical strength, and outstanding longevity. Available in both carbon steel and stainless steel, this robust construction empowers you to select the precise metallurgical profile required to combat specific corrosive environments and high-pressure demands, ultimately extending the lifecycle of your pipeline assets.
The core of its leak-prevention capability lies in the advanced three O-ring design. This unique configuration ensures a secure, tight closure between the disc and the seat, forming an impenetrable barrier against backflow. Before leaving the facility, every unit undergoes rigorous validation, including a 1.5 times PN shell test and a 1.1 times PN seat tightness test. This uncompromising approach to quality control guarantees absolute sealing reliability under the most demanding operational stresses.
Designed with a sandwich/wafer type single disc swing mechanism, this valve boasts an incredibly compact footprint. Its reduced volume and lightweight nature make it remarkably easy to handle and install, drastically cutting down on labor hours and heavy lifting equipment requirements. By saving valuable pipeline space, it serves as a highly economical and practical backflow prevention solution that lowers both initial installation and long-term maintenance costs.
Industrial processes rarely operate in gentle conditions, which is why this valve is engineered for extreme adaptability. It seamlessly handles severe temperature fluctuations, operating reliably from -29°C to +425°C in carbon steel, and an impressive -196°C to +455°C in stainless steel. Rated for Class 150LB nominal pressure, it efficiently processes a diverse array of media, including water, high-temperature steam, volatile oils, gases, and various neutral substances without compromising performance.
The smooth and reliable opening and closing action of the swing disc makes it an indispensable component for systems requiring strict backflow prevention. Its versatile design allows for seamless integration across a vast spectrum of sectors. Whether deployed in municipal water supply networks, aggressive wastewater treatment plants, complex petrochemical refineries, or general industrial drainage systems, it consistently delivers stable fluid control.
Global compatibility is paramount for large-scale procurement and facility standardization. This valve is meticulously manufactured to comply with major international standards, including API, ANSI, DIN, and JIS. This comprehensive standardization ensures flawless flange connections and dimensional matching with your existing global pipeline infrastructure, providing international buyers with an industrial-grade, long-lasting fluid control solution they can trust implicitly.
Sourcing critical industrial components requires a partner who understands the intricate balance between uncompromising quality, volume scalability, and technical precision. As a dedicated manufacturer and global supplier, we do more than just produce valves; we engineer reliability into every forged steel body that leaves our production lines. Our commitment to metallurgical excellence and strict testing protocols ensures that your operations remain safe, efficient, and uninterrupted.
Direct Manufacturer Advantage: By controlling the entire forging, machining, and assembly process, we eliminate intermediary markups, offering you highly competitive pricing for high-volume procurement without sacrificing an ounce of quality.
Stringent Quality Assurance: Every single valve is subjected to exhaustive hydrostatic and pneumatic testing, ensuring that the shell and seat integrity exceed industry standards before they are ever packed for shipment.
Advanced Engineering Support: Our team of fluid control experts is available to assist with technical sizing, material selection, and custom engineering requests, ensuring the valve you receive perfectly matches your specific operational parameters.
Robust Supply Chain: With optimized production scheduling and extensive inventory management, we guarantee reliable lead times, ensuring your critical facility upgrades and maintenance turnarounds stay strictly on schedule.
To assist our industrial clients and engineering partners in making informed procurement decisions, we have compiled the most common technical inquiries regarding our forged sandwich check valves. Review the details below to understand how this component integrates into your specific fluid control systems.
What makes the forging body superior to a cast body for this check valve?
Forging subjects the steel to immense thermal and mechanical pressure, aligning the grain structure and eliminating internal porosities or voids. This results in a significantly higher tensile strength and fatigue resistance, allowing the valve to endure severe pressure spikes and extreme temperatures without the risk of micro-cracking often associated with cast materials.
How does the three O-ring design improve the sealing performance?
Traditional metal-to-metal seats can allow minor seepage, especially under low-pressure differentials. The integration of three precision-engineered elastomeric O-rings creates a redundant, compressible barrier. As the disc closes, these rings deform slightly to fill any microscopic imperfections on the seating surface, guaranteeing a bubble-tight, zero-leakage seal even in fluctuating pressure environments.
Can this valve handle cryogenic applications?
Yes, when specified with the stainless steel forging body. The stainless steel variant is metallurgically designed to maintain its structural toughness and resist embrittlement at extremely low temperatures, operating safely down to -196°C. This makes it highly suitable for liquefied natural gas (LNG) and other cryogenic fluid processing.
What is the advantage of the sandwich/wafer connection type?
The sandwich or wafer design features an ultra-short face-to-face dimension. Instead of having its own bulky flanges, the valve is clamped securely between the existing pipe flanges using long studs. This dramatically reduces the overall weight and spatial footprint of the installation, making it ideal for tight pipe galleries and reducing the structural load on pipeline supports.
How do I verify if this valve will fit my existing pipeline standards?
Our sandwich check valves are manufactured to be universally compatible. The outer diameter and sealing faces are machined to align perfectly with major global flange standards, including API, ANSI, DIN, and JIS. You can reference our comprehensive dimensional charts to confirm exact bolt circle alignments and face-to-face sizing for your specific pipe schedule.
Does the single disc design cause significant pressure drop?
No. The single disc is hydrodynamically profiled and suspended on a low-friction hinge. It requires minimal cracking pressure to swing open fully, allowing the media to flow through a large, unobstructed port. This streamlined internal geometry minimizes turbulence and ensures a very low pressure drop across the valve during normal forward flow.
