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| Product Name | H74 Wafer Single Disc Swing Check Valve |
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| Size Range | 2” to 54” (DN50 - DN1500) |
| Pressure Rating | Class 150lb to 2500lb |
| Connection Form | Flange (Wafer) |
| Structure | Single Disc Swing |
| Sealing Form | Hard-Sealed (Metal seal) or Rubber seal |
| Flow Direction | Unidirection |
| Body Material | Cast Steel (WCB, CF8, CF3, GR4A, Hastelloy C, F304, F316, A105, etc.) |
| Applicable Temperature | -196°C to 540°C (Depending on raw material) |
| Applicable Medium | Water, oil, gas, and other caustic media |
| Design & Manufacturing Standard | API 594, ANSI B16.10, ANSI B16.5 / ANSI B16.47 |
| Inspection & Test Standard | API 598, API 6D |
| Corrosion Protection | Inside and outside epoxy coating |
| Certificates | API 6D, CE, ISO9001 |
| Application Fields | Metallurgy, Light Industrial, Electric Power, Petrochemical, Water Treatment |
| Production Capacity | 5000 PCS/Year |
| Delivery Detail | 20~45 Days |
| Transport Package | Standard Export Wooden Case |
| Origin | China |
H74 Wafer Single Disc Swing Check Valve With Hard-Sealed
Size Range: 2” to 54” (DN50 - DN1500)
Pressure Rating: Class 150lb to 2500lb
Sealing Options: Hard-Sealed (Metal) or Resilient Rubber
Core Materials: Cast Steel, Stainless Steel, Hastelloy C, and more
Certifications: API 6D, CE, ISO9001
The H74 Wafer Single Disc Swing Check Valve represents the pinnacle of fluid control engineering, meticulously crafted to safeguard your most critical pipeline infrastructure. When you handle the heavy-duty cast steel body, the substantial weight and flawless, uniform epoxy-coated finish immediately convey a profound sense of industrial-grade durability. The smooth, precision-machined metal or rubber sealing surfaces are designed to close with a reassuring, definitive action, effectively silencing the disruptive noise of fluid reversal and forcefully mitigating the destructive shockwaves of water hammer. Every internal contour of the single disc swing mechanism is hydrodynamically optimized to reduce flow resistance, ensuring that your media—whether it is volatile petrochemical gas, abrasive industrial slurry, or high-pressure steam—glides through the piping network with an absolute minimum of pressure drop. This robust construction guarantees a steadfast, unwavering performance, maintaining absolute unidirectional flow integrity even when subjected to extreme environmental and operational temperature fluctuations, ranging from a freezing cryogenic -196°C up to a scorching 540°C. By integrating this masterfully engineered valve into your network, you are not merely installing a standard component; you are fortifying your entire operation with a failsafe mechanical barrier that drastically reduces maintenance downtime, prevents catastrophic equipment failure, and elevates the overall reliability of your fluid processing systems.
Engineered for uncompromising performance, this wafer check valve integrates advanced mechanical principles to deliver superior operational security across complex fluid networks. The intelligent design prioritizes both installation convenience and long-term mechanical stability, ensuring your fluid management systems operate at peak efficiency without the constant need for intervention or repair.
Ultra-Thin Profile: The compact wafer design significantly cuts down on the spatial footprint, allowing for seamless integration into tightly constrained pipeline layouts where traditional flanged valves simply cannot fit.
Exceptional Flow Dynamics: The streamlined internal cavity minimizes turbulence and drag, translating directly to lower energy consumption for your pumps and sustained high-velocity throughput.
Versatile Sealing Options: Choose between precision-lapped metal-to-metal hard seals for abrasive high-temperature environments or resilient rubber seals for absolute bubble-tight closure in standard fluid applications.
Robust Anti-Corrosion Defense: A comprehensive internal and external epoxy coating acts as an impenetrable shield against aggressive caustic media, high humidity, and harsh atmospheric conditions.
Rapid Closure Mechanism: The carefully balanced single disc responds instantaneously to flow deceleration, preventing reverse velocity buildup and protecting sensitive upstream machinery from damage.
Modern industrial facilities frequently grapple with severe spatial limitations, making the physical footprint of pipeline components a critical engineering consideration during system design and upgrades. The H74 model addresses this challenge head-on through its highly optimized wafer-style architecture, which dramatically reduces both the face-to-face dimension and the overall weight of the assembly compared to conventional swing check valves.
Substantial Weight Reduction: By eliminating bulky traditional flanges, the overall valve weight is minimized, reducing structural stress on pipeline supports and simplifying handling during installation.
Confined Space Compatibility: The ultra-short structural length makes it the definitive choice for retrofitting existing systems, navigating complex pipe galleries, or designing compact skid-mounted equipment.
Integrated Single Disc: The streamlined single-lobe disc design drastically reduces the number of internal moving parts, inherently lowering the probability of mechanical jamming, friction wear, or failure over time.
Simplified Maintenance Access: The straightforward, clamped-between-flanges construction allows for rapid inspection and servicing, significantly cutting down on operational downtime and labor expenditures.
The true measure of an industrial check valve lies in its ability to manage fluid dynamics securely without impeding overall system productivity. This valve is meticulously calibrated to offer an exceptionally low flow resistance, ensuring that pressure drops are kept to an absolute minimum while maintaining rigorous backflow prevention protocols to protect your investments.
Optimized Flow Path: The internal geometry is specifically contoured to guide fluid smoothly past the disc, maximizing energy efficiency across the entire piping network and reducing operational costs.
Water Hammer Mitigation: The highly responsive swing mechanism can be augmented with a heavy-duty return spring, accelerating the closure rate to neutralize destructive pressure surges before they propagate through the pipes.
Zero Reverse Flow Guarantee: Instantaneous seating upon flow cessation guarantees that your valuable media remains strictly unidirectional, safeguarding critical upstream pumps and compressors from contamination or mechanical shock.
Acoustic Dampening: The precise alignment of the disc and seat minimizes the harsh clattering sounds typically associated with valve closure, contributing to a safer, quieter, and more compliant operational environment.
Material integrity is the absolute foundation of reliable fluid isolation, particularly when handling hazardous, highly corrosive, or extreme-temperature media. We source only the highest-grade metallurgical compounds to construct valve bodies and internal trims that withstand the most punishing industrial environments without compromising their structural rigidity or sealing capabilities.
Premium Alloy Options: Available in a comprehensive spectrum of materials including WCB, CF8, CF3, GR4A, Hastelloy C, F304, F316, and A105 to perfectly match your specific chemical compatibility and pressure requirements.
Cryogenic to High-Heat Resilience: Engineered to perform flawlessly across a staggering temperature gradient, from demanding cryogenic applications at -196°C to high-heat exhaust and steam systems reaching 540°C.
Hard-Sealed Durability: The metal-to-metal seating configuration provides unparalleled resistance to scratching, galling, and wear when exposed to particulate-heavy or highly abrasive fluid streams.
Soft-Sealed Precision: For applications demanding zero-leakage tolerances, the premium rubber sealing options deliver an impenetrable barrier against water, oil, and gaseous media, ensuring complete line isolation.
Trust in industrial equipment is built upon a solid foundation of rigorous testing and unwavering adherence to global engineering standards. Every single valve that leaves our manufacturing facility undergoes a battery of exhaustive quality assurance protocols, ensuring it performs exactly as specified under the most demanding field conditions.
Global Standard Alignment: Meticulously designed and manufactured in strict accordance with API 594 and ANSI B16.10 specifications, ensuring universal compatibility and predictable performance across international projects.
Authoritative Certifications: Proudly carrying API 6D, CE, and ISO9001 certifications, serving as a verifiable testament to our relentless pursuit of manufacturing excellence and organizational quality management.
Comprehensive Pressure Testing: Subjected to 100% hydrostatic and pneumatic testing per API 598 protocols, verifying shell integrity and absolute seat tightness prior to dispatch.
Lifecycle Endurance: Advanced cyclic testing guarantees that the internal swing mechanism will endure thousands of operational cycles without degrading, providing a verifiable long-term return on your infrastructure investment.
No two industrial projects are exactly alike, which is why adaptability is a core principle of our manufacturing philosophy. This versatile check valve serves as a critical component across a diverse matrix of global industries, backed by our robust capability to tailor the product to your precise environmental, dimensional, and operational specifications.
Broad Sector Deployment: Proven operational success within the metallurgy, light industrial manufacturing, electric power generation, petrochemical refining, and municipal water treatment sectors.
OEM & ODM Capabilities: We provide comprehensive private labeling and custom design manufacturing services to seamlessly integrate our high-performance valves into your proprietary equipment packages.
Tailored Flange Standards: Precision-machined to accommodate a wide variety of international connection standards, including ANSI B16.5, ANSI B16.47, BS, DIN, and JIS standard flanges.
Specialized Protective Coatings: Beyond standard epoxy, we offer customized surface treatments designed to combat highly specific corrosive atmospheres, acidic environments, or extreme offshore salinity.
A superior product must be supported by an equally robust delivery and support network. As a dedicated manufacturer, we understand that project timelines are critical, and we have optimized our entire supply chain to ensure you receive your critical components exactly when and where you need them, without logistical friction or unexpected delays.
High-Volume Production: Leveraging an advanced manufacturing facility with a proven production capacity of 5,000 pieces annually, easily accommodating large-scale project demands and continuous supply contracts.
Predictable Lead Times: Streamlined inventory and production management guarantee a reliable delivery window of 20 to 45 days, depending strictly on specific order quantities and material requirements.
Secure Global Transit: Every valve is meticulously secured within standard export wooden cases, engineered to absorb transit shocks and prevent environmental exposure during long-haul international shipping.
Comprehensive Technical Support: Our dedicated engineering team provides ongoing after-sales assistance, from initial installation guidance to long-term maintenance troubleshooting, ensuring your operational continuity.
Selecting the right manufacturing partner is just as crucial as selecting the right valve. We bring decades of specialized metallurgical expertise and fluid control engineering to every partnership, acting not just as a supplier, but as a dedicated extension of your procurement and engineering teams aimed at maximizing your project's success.
Direct Manufacturer Advantage: By sourcing directly from our state-of-the-art facility in China, you bypass intermediary markups, securing premium quality control at highly competitive price points.
Uncompromising Material Traceability: We maintain strict documentation and testing for all raw materials, providing complete transparency and peace of mind regarding the metallurgical composition of your valves.
Agile Responsiveness: Our dedicated project managers ensure rapid communication, providing detailed technical drawings, prompt quotations, and real-time production updates to keep your planning on track.
Proven Global Track Record: Trusted by leading infrastructure developers, EPC contractors, and industrial operators worldwide to deliver critical fluid control solutions that consistently stand the test of time.
To assist your engineering and procurement teams in making an informed decision, we have compiled answers to the most common technical inquiries regarding the H74 Wafer Single Disc Swing Check Valve.
The wafer design significantly reduces the face-to-face dimension and the overall weight of the valve. This makes it highly advantageous for installations where space is severely restricted. Furthermore, it helps lower the structural load on the piping system and supports, all while maintaining robust pressure containment capabilities up to Class 2500lb.
Yes, the metal-to-metal hard sealing option is specifically engineered for abrasive and high-temperature media. The hardened seating surfaces resist the scratching, scoring, and galling that would quickly destroy soft rubber seals, ensuring a reliable, long-lasting shut-off even in demanding petrochemical or metallurgical slurry applications.
When constructed from appropriate materials like CF8 or specific cryogenic stainless steel alloys, the valve can operate safely and effectively in temperatures as low as -196°C. The internal clearances and seating materials are carefully selected to prevent thermal binding and maintain absolute seal integrity under extreme cold conditions.
Every valve is subjected to rigorous final inspection tests in strict accordance with API 598 and API 6D standards. This includes high-pressure hydrostatic shell testing to verify structural soundness, as well as precise seat leakage tests to guarantee that the product delivers zero-leakage performance before it is approved for global export.
Absolutely. While our standard offering includes a highly durable inside and outside epoxy coating, our manufacturing facility is fully equipped to apply specialized marine-grade, PTFE, or other chemical-resistant coatings tailored to your exact environmental specifications to maximize the valve's operational lifespan in saline or acidic conditions.
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