Refrigerant gas R407C has been a reliable choice for air conditioning and heat pump systems, especially since the phase-out of R22. It’s known for being a high efficiency refrigerant and a more eco-friendly alternative. But a common question arises:

 

Can R407C be used with or mixed with other refrigerants?

Let’s explore what makes R407C refrigerant unique—and why compatibility matters more than you might think.

 

What Is R407C?

R407C is a zeotropic HFC blend made up of:

 

R32 (23%)

R125 (25%)

R134a (52%)

 

This combination gives refrigerant gas R407C a good balance of cooling performance, energy efficiency, and environmental safety (no ozone depletion). It’s commonly used in residential and commercial systems, and it's often considered a go-to R22 replacement.

Since it's chlorine-free, eco-friendly refrigerant R407C meets global environmental regulations like the Montreal Protocol.

 

Is R407C Compatible With Other Refrigerants?

The short answer: No. Don’t mix refrigerants.

Even though some refrigerants may appear similar, R407C refrigerant is not compatible with:

 

R22 (its predecessor)

R410A

R134a

Or any other refrigerant

 

Here’s why:

R407C is a zeotropic blend, which means it has a glide—its components boil at different temperatures. Mixing it with another refrigerant changes the pressure-temperature relationship and disrupts system performance.

Mixed refrigerants can lead to:

 

Inaccurate superheat/subcooling readings

Reduced efficiency and cooling capacity

Compressor overheating or failure

Loss of manufacturer warranty

 

In many countries, it's illegal to mix refrigerants due to safety and environmental risks.

 

What If I’m Replacing R22?

You can use R407C refrigerant for R22 system retrofits, but the process must be done correctly.

Key retrofit steps:

Recover all R22 (don’t mix)

Flush or replace components if needed

Switch from mineral oil to POE oil

Check for material compatibility (especially seals and O-rings)

Charge the system with pure, high efficiency refrigerant R407C

Skipping these steps can reduce efficiency or cause leaks.

 

Are There Better Alternatives?

While eco-friendly refrigerant R407C is still widely used, newer low-GWP options are entering the market, such as:

 

R32 (higher efficiency, but mildly flammable)

R454B (lower GWP, designed to replace R410A)

 

However, if your system is designed for or retrofitted to R407C refrigerant, it remains a cost-effective and efficient solution—just don’t mix it.

 

Final Thoughts

R407C is not compatible with other refrigerants. Mixing it with anything else, including R22 or R410A, is unsafe, inefficient, and potentially illegal.

If you're using refrigerant gas R407C, keep it pure.

If you’re switching from another refrigerant, retrofit properly.

And when in doubt, always consult a certified HVAC technician.

Have you ever wondered what the future of cooling looks like? As the world embraces greener technologies, even the refrigerants that cool our homes, preserve our food, and power our air conditioners are evolving. One of the most promising new options is refrigerant gas R454B—a cleaner, more efficient alternative designed to meet today’s environmental demands.

But what exactly is R454B, and what can it replace? Let’s break it down.

 

So, What is R454B Refrigerant Equivalent To?

In simple terms, R454B refrigerant is a low-GWP (Global Warming Potential) alternative to R-410A, one of the most widely used refrigerants in residential and light commercial HVAC systems. If you’ve used an air conditioner or heat pump in the past 20 years, chances are it ran on R-410A.

 

Here's the difference:

R-410A GWP: 2088

Eco-friendly refrigerant R454B GWP: Just 466

 

That’s a 78% reduction in climate impact—making high efficiency refrigerant R454B a crucial step forward in meeting international regulations like the Kigali Amendment.

While R-410A is its primary equivalent, some testing also shows R454B refrigerant for R-32-based systems is technically possible with proper system adjustments.

 

Why Does This Matter?

You might be thinking: “It’s just a gas swap, right?” Not quite. The fact that R454B refrigerant is a close match to R-410A is what makes it such a game-changer in the transition to greener cooling solutions.

 

1. Smooth Equipment Transition

Manufacturers don’t need to redesign HVAC systems from scratch. Many existing R-410A systems can adopt refrigerant gas R454B with only minor modifications—saving time, cost, and engineering effort.

2. Boosted Energy Efficiency

You don’t have to sacrifice performance for sustainability. In fact, high efficiency refrigerant R454B can improve energy efficiency by up to 4.7% compared to R-410A, meaning lower energy bills and a smaller carbon footprint.

3. A Viable Solution to Regulatory Pressure

 

As regulations phase out high-GWP refrigerants, eco-friendly refrigerant R454B fills the gap with a practical, available, and future-ready alternative.

 

What’s Inside R454B?

Eco-friendly refrigerant R454B is a blend of:

 

R-32 (68.9%) – a widely used refrigerant with moderate GWP

R-1234yf (31.1%) – a next-generation HFO with GWP < 1

 

The result? A refrigerant with:

Zero Ozone Depletion Potential

Significantly reduced GWP

Excellent thermal performance

 

This unique combination makes R454B refrigerant both climate-friendly and effective for a wide range of HVAC applications.

 

Is R454B the Same as R-410A?

Not exactly. While they’re functionally similar, there's a key difference in safety classification.

R-410A: A1 – non-flammable

R454B refrigerant: A2L – mildly flammable

 

Before you worry, "mildly" is the key word. A2L refrigerants have low burning velocities and are difficult to ignite. Systems using refrigerant gas R454B are designed with added safety measures like leak detection and sealed components to mitigate risk. Always ensure installations are handled by qualified professionals.

 

Where is R454B Refrigerant Used?

Adoption of R454B refrigerant for new systems is growing quickly. You’ll see this high efficiency refrigerant in:

Residential & Light Commercial AC: Split systems, ducted units, and heat pumps

 

Direct Expansion (DX) Chillers: Mid-sized commercial cooling

High-Temperature Heat Pumps: Ideal for heating as well as cooling

Commercial Refrigeration: Including supermarket display cases and cold rooms

 

An added bonus? Systems using R454B refrigerant typically require 20–30% less charge volume than R-410A—making them even more eco-conscious and cost-efficient.

 

The Bottom Line

So, what is R454B refrigerant equivalent to? It's the modern, low-GWP successor to R-410A—offering a blend of high performance, energy efficiency, and environmental responsibility.

Whether you’re upgrading an HVAC system or specifying equipment for a new build, asking about R454B refrigerant is a smart step toward a sustainable future.

 

 

Choose the high efficiency, eco-friendly refrigerant R454B—and keep your cool the greener way.

When it comes to maintaining optimal steering control and suspension integrity in trucks and SUVs, the idler arm plays a critical role. As a complement to our renowned stabilizer links, FENGYU is proud to offer a comprehensive range of high-quality idler arms engineered to meet the demands of diverse vehicle models—from daily commuters to heavy-duty workhorses.

With over 30 years of expertise in automotive suspension manufacturing, FENGYU provides idler arms designed for precision fit and extended service life. Our product lineup includes:

 

• Ford Idler Arm, Ford F-150 Steering Idler Arm

• Toyota Idler Arm, Honda Idler Arm

• Chevrolet Idler Arm, Buick Enclave Idler Arm

• Nissan Titan Steering Idler Arm, Mazda BT-50 Front Idler Arm

• BMW Idler Arm

• Custom Idler Arms for Popular Trucks & SUVs

• And more car models available

Whether you're servicing a rugged Ford F-150, a dependable Chevrolet Silverado, or a sophisticated European model, FENGYU delivers components that restore like-new steering responsiveness and safety.

Built Strong to Last Longer: Superior Materials & Design

At FENGYU, every idler arm is manufactured with durability in mind. We use high-strength forged steel and ductile iron castings to ensure structural integrity under extreme stress and load. Critical pivot points are machined to tight tolerances for smooth articulation, while corrosion-resistant coatings protect against rust and wear.

Our idler arms also feature advanced bronze or polymer bushings designed to absorb shocks and reduce vibration. This translates to quieter operation, improved road feedback, and longer component life—key advantages for both off-road adventures and urban driving.

 

Customization Options: OEM/ODM Services Available

We understand that one size does not fit all. That’s why FENGYU offers extensive customization support for idler arms, including:

• Finish options: zinc plating, powder coating, or black phosphating

• Laser etching with brand logos or part numbers

• Tailored packaging—from simple polybags to retail-ready boxes

With a low MOQ of just 100 pieces per reference, we make it easy for distributors and wholesalers to build a branded inventory that stands out in the competitive auto parts market.

 

Quality Assurance: Tested, Certified, Trusted

FENGYU idler arms undergo rigorous testing for dimensional accuracy, fatigue strength, and environmental resistance. Our quality management system is certified to IATF and ISO standards, ensuring every part meets or exceeds OEM specifications.

From raw material selection to final assembly, we maintain strict process controls so you can supply your customers with confidence.

 

Global Supply, Local Support

With ready stock of over 100,000 suspension components and a streamlined production cycle, FENGYU ensures prompt delivery for both bulk and customized orders. Our responsive after-sales team provides hassle-free warranty support and technical assistance, helping you uphold a reputation for reliability.

 

Drive Your Business Forward with FENGYU

As a trusted manufacturer of steering and suspension components—including idler arms and stabilizer links—FENGYU is your ideal partner for sourcing parts that perform. We support businesses worldwide with factory-direct pricing, three decades of export experience, and a commitment to innovation and quality.

 

Ready to stock premium idler arms for your market?
Contact FENGYU today to request catalogs, discuss customization needs, or place a trial order. Let us help you steer ahead of the competition.

 

Fully Automatic Counting and Packaging Solution for Plastic Parts

In the plastic product manufacturing industry, the outbound, sales, and procurement of plastic parts are typically measured by quantity. Traditional counting methods are not only inefficient and error-prone but also lead to significant costs and management losses. Achieving fast, accurate, and automated counting and packaging has become a key factor for many enterprises to enhance their competitiveness.

Customer Pain Points
A large plastic products manufacturer needed to handle the outbound packaging of a vast quantity of plastic parts daily. Previously relying on manual counting, the process was not only slow but also, due to the small size and large volume of the items, highly susceptible to miscounts and omissions. This led to customer complaints and financial losses. Furthermore, the monotonous counting work faced challenges in hiring and high labor costs.

Solution
We tailored a complete fully automated vision-based counting and packaging machine for them. This solution integrates four core advantages

Automatic Feeding: Utilizes material elevators to automatically and steadily transport piles of plastic parts to the counting stage, completely freeing hands from the task, eliminating secondary contamination and efficiency bottlenecks caused by manual handling.

Accurate Counting: Employs advanced vision technology to quickly scan plastic parts, combined with software analysis functions to achieve high-precision counting.

Automatic Bag Making & Packaging: Accurately counted plastic parts fall into the packaging machine, which automatically performs a series of actions including bag making, filling, and sealing. The packaging is secure and aesthetically pleasing.

Clear Marking: Integrates a thermal transfer printer to print clear and stable label information on the packaging bags in real-time. The label information is traceable, complying with quality management standards.

Customer Benefits

Accuracy: Improved counting precision, avoiding economic losses and customer disputes.

Soaring Efficiency: Single-line production capacity increased several times, easily handling large-volume order demands.

Cost Reduction: Significant savings on traditional counting and packaging costs.

Standardized Management: Uniform packaging and clear markings enhance the company's professional image and facilitate warehouse and logistics management.

Data Traceability: Label information provides a solid foundation for product quality tracing.

Videos

Precision Counting for the Aerospace Industry

In the aerospace sector, which represents the pinnacle of human technological achievement, every tiny component, every meticulous process, and every precise assembly directly impacts the safety and performance of national critical assets. Rapid, accurate, and non-contact counting of large quantities of small, structurally complex standard parts is a crucial link in ensuring production efficiency and inventory management accuracy. Traditional counting methods are not only inefficient and prone to fatigue but also susceptible to human error, becoming an "invisible bottleneck" in modern smart manufacturing processes.

The One Electronics, an innovator deeply rooted in the field of automatic counting, provides the aerospace industry with a more efficient solution through advanced CCD line-scan camera technology and intelligent vision algorithms, elevating this tedious process to a higher level of automation and intelligence.

Exceptional Requirements for Counting in the Aerospace Sector

The aerospace manufacturing industry imposes extremely stringent demands on counting tasks

High Precision and Zero Error: From small washers, rivets, and screws to larger seals and bearing balls, any counting error or omission can lead to inventory chaos, production halts, or even potential safety hazards in subsequent assemblies.

High Efficiency and Fast Pace: Rapid material flow on production lines and frequent warehouse transactions require counting equipment to process thousands of parts in a short time, without becoming a bottleneck in the logistics chain.

Adaptability to Complexity and Diversity: Parts vary in material (metal, composite, rubber, etc.), color, and size, and may even present challenging scenarios such as reflectivity or transparency. Counting equipment must demonstrate strong adaptability and stability.

Data Traceability and Integration: Counting results must seamlessly integrate with enterprise ERP, MES, and other information management systems to enable automatic recording, traceability, and analysis of data, building a transparent digital warehouse.

Core Advantages of CCD Camera Automatic Counting System

Addressing these challenges, The One Electronics’ automatic counting equipment demonstrates outstanding performance through innovative technological approaches

Line-Scanning, Comprehensive Capture: Unlike area-scan cameras, the CCD line-scan camera acts like a tireless "super inspector." As parts pass through vibratory plate or conveyor belts, the camera performs high-speed continuous scanning, generating ultra-high-resolution images. This ensures every part, regardless of its position, is captured clearly, guaranteeing counting accuracy.

Intelligent Algorithms, Meticulous Insight: The core machine vision algorithm serves as the "brain" of the system. Trained on vast datasets, the algorithm accurately identifies the shape, contour, size, and other features of different parts, intellig distinguishing target parts from the background, impurities, or even parts of different specifications.

Ultra-Fast Response, Empowering Production Lines: Leveraging high-speed hardware acquisition and efficient algorithm processing, the system completes counting within milliseconds. Counting tens of thousands of balls or rivets in a box takes mere moments, boosting efficiency dozens of times compared to traditional methods. This significantly accelerates material turnover, meeting the high-precision and high-efficiency demands of aerospace manufacturing.

Data nterconnectivity, Smart Management: The equipment provides standard communication interfaces for easy integration into existing automated production lines and information management networks. Counting results are uploaded in real time, automatically generating documents and reports. This eliminates manual entry errors, enables real-time inventory updates and traceability, and provides a solid data foundation for lean management and decision-making.

Application Scenarios: Across the Entire Aerospace Manufacturing Chain

The One Electronics’ CCD vision automatic counting equipment is widely used in multiple critical stages of the aerospace industry

Incoming Inspection: Rapid, batch counting of supplier deliveries to ensure quantities match orders exactly, safeguarding quality from the start.

Workshop Dispensing: Precisely and efficiently dispense the required number of standard parts to assembly lines based on work orders, preventing over-issuance, under-issuance, or misissuance.

Inventory Counting: Automate regular warehouse stocktaking, significantly shortening counting cycles, improving inventory accuracy, and reducing staff workload.

Assembly Process Control: At automated assembly stations, perform secondary counting confirmation of grasped parts to ensure accurate placement quantities, achieving closed-loop control.

When it comes to medium-sized excavators, two of the most popular models are the Caterpillar CAT 320D and the Komatsu PC200-8. Both machines are trusted worldwide for earthmoving, roadwork, and construction projects. But how do they compare, and which one is the better choice for your business? Let’s break it down.

1. Engine Power and Performance

• CAT 320D is powered by a Cat C6.4 ACERT engine, delivering around 138 kW (185 hp). It offers strong digging force and smooth hydraulic control, making it highly efficient for heavy-duty work.

• Komatsu PC200-8 comes with a Komatsu SAA6D107E-1 engine, producing about 110 kW (148 hp). While slightly lower in horsepower, it is known for reliability and fuel efficiency.

Verdict: CAT 320D provides more horsepower and stronger digging force, ideal for demanding operations. Komatsu 200-8 offers a balance of performance and efficiency, making it suitable for general construction work.

2. Fuel Efficiency

• CAT 320D focuses on productivity, sometimes at the expense of higher fuel consumption. However, its advanced hydraulics help optimize energy use.

• Komatsu PC200-8 features Komatsu’s fuel-saving technology, making it one of the more economical excavators in its class.

Verdict: If fuel cost is a major concern, Komatsu PC200-8 has the edge.

3. Operator Comfort and Technology

• CAT 320D is well-regarded for operator comfort, with spacious cabins, ergonomic controls, and reduced vibration. Advanced monitoring systems improve machine management.

• Komatsu PC200-8 also offers a comfortable cab with low noise levels and easy-to-use controls. It includes Komtrax, Komatsu’s GPS-based tracking system, for real-time monitoring.

Verdict: Both offer modern operator-friendly features, but Komatsu’s Komtrax system provides added fleet management benefits.

4. Durability and Maintenance

• CAT 320D is famous for durability and long service intervals. Caterpillar’s global support network makes parts and service widely available.

• Komatsu PC200-8 is also highly reliable, with strong undercarriage and robust hydraulics. Komatsu’s support is solid, but parts availability can vary depending on the region.

Verdict: Both machines are durable, but CAT’s global parts support gives it a slight advantage.

5. Resale Value

• CAT 320D holds higher resale value in most markets due to strong demand and brand reputation.

• Komatsu PC200-8 also retains good value but generally slightly lower than CAT.

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Final Thoughts: Which One to Choose?

• Choose CAT 320D if you need maximum digging power, global support, and higher resale value. It’s ideal for heavy-duty contractors who prioritize productivity.

• Choose Komatsu PC200-8 if you want fuel efficiency, lower operating costs, and reliable performance for medium workloads. It’s a great option for contractors looking to reduce expenses while maintaining solid performance.

Both excavators are excellent choices in the 20-ton class, and the best decision depends on your project requirements, budget, and long-term fleet strategy.

We recently received a heartfelt review from afar. Though we are separated by great distance, it does not hinder our sincere mutual well-wishes!

Firstly, its advanced hydraulic control system performs excellently, operating more smoothly and with greater precision than any comparable model we have tested. Even under complex working conditions, the equipment maintains stable efficiency, providing strong support for the smooth progress of our projects.

 

Secondly, the humanized cab design is truly commendable. The equipped air conditioning system offers operators a comfortable working environment in high-temperature conditions, which is crucial for our prolonged outdoor operations during the summer. The excellent working environment not only enhances productivity but also reflects your company's human-centric care for operators.

 

Our management ultimately decided to purchase your equipment in bulk precisely because they valued your company's professional and pragmatic work attitude as well as your commitment ,This batch of equipment will be used for our upcoming major infrastructure projects. We are confident that with its exceptional reliability, outstanding efficiency, and advanced features, it will become the backbone of our project construction.

 

We look forward to establishing a long-term strategic partnership with your company, working together to contribute to the thriving construction industry here. We also wish your company continued growth and success, and we anticipate achieving even greater accomplishments in our future cooperation!

 

When buying a used excavator, one of the most important factors to inspect is the engine condition. The engine is the heart of any excavator, and a poor-quality engine can lead to costly repairs, downtime, and low efficiency on site. Whether you are purchasing for a project in Africa, Asia, or the Middle East, knowing how to assess the excavator’s engine will help you make the right decision.

In this blog, we will guide you through the key steps to evaluate if an excavator engine is in good working order before buying.

 

 

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1. Check for Engine Start-up Performance

A healthy engine should start smoothly without excessive cranking. Warning signs include: 

Hard starting, especially in warm weather.

Excessive smoke at start-up.

Unusual knocking or rattling sounds.

Tip: Always request a cold start test. This shows how the excavator performs when the engine has been sitting idle for hours.

 

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2. Observe Exhaust Smoke Color

Exhaust smoke can reveal much about the condition of the engine:

Blue smoke → burning oil (possible worn piston rings or valve seals).

Black smoke → incomplete fuel combustion (possible injector or turbo issues).

White smoke → coolant leakage or head gasket problem.

 Healthy engines should produce little to no smoke after warming up.

 

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3. Listen for Unusual Noises

Engines in good condition should run smoothly. Be cautious of:

Knocking sounds → may indicate worn bearings or piston issues.

Tapping sounds → possible valve or injector problems.

Grinding noises → potential timing gear or accessory failure.

 

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4. Inspect Engine Oil & Hydraulic Fluid

Check the engine oil color – dark black oil may indicate overdue service, while milky oil could mean coolant leakage.

Inspect hydraulic oil – low or dirty fluid can affect both the engine and overall excavator performance.

Regular maintenance history is a good sign of a well-kept machine.

 

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5. Review Engine Hours vs. Machine Condition

Excavator engines are built for long life, but:

Over 10,000 hours may require major inspection.

Compare machine condition with hour meter reading – if it looks heavily worn but shows low hours, it may be tampered.

 

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6. Test Engine Power Under Load

Ask the seller to operate the excavator under real working conditions:

Digging or lifting heavy loads.

Swinging the boom while tracking.

The engine should maintain steady power without stalling or producing excessive smoke.

 

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7. Verify Service Records & Engine Brand

A reliable service history is the best proof of maintenance.
Also, confirm the engine model – brands like Cummins, Isuzu, Mitsubishi, and Hyundai engines are known for durability and easy parts availability in African markets.

 

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Conclusion

Inspecting an excavator engine is essential before purchase. By checking start-up performance, exhaust smoke, unusual noises, oil condition, operating power, and service history, you can avoid costly mistakes and ensure you are buying a reliable excavator for your construction project.

For buyers in Africa and worldwide, investing in the right machine with a strong engine means higher productivity and lower maintenance costs.

 

When a modern excavator effortlessly scoops 5 tons of earth, its steel arm channels not just raw power—but a million generations of human ingenuity in our ancient struggle with the land. Join us as we unveil the legendary ancestors that reshaped our planet's contours!

 

 

Chapter 1: Genesis – Muscles and Levers (4000 BC – 1700 AD)

1.1 The Original "Excavators" – Human Hands

Primitive Era: Clam shells as shovels, animal bones as picks

Egyptian Marvel: 100,000 workers hand-dug the Pyramids of Giza (moving 2.5-ton stones = 1.5 hours of work for a modern 20-ton excavator)

 

1.2 Dawn of Leverage Civilization

Warring States Period : Earliest mechanical digging apparatus

Archimedes' famous boast: Warship-moving experiments demonstrating lever principles

 

Chapter 2: Steam Age – Iron Behemoths in Smoke (1780-1912)

2.1 Game-Changing Milestone

 

1829 Patent: William Otis' steam-powered rail-mounted excavator

 

Efficiency Revolution: Daily output = 200 laborers (still required 6 operators)

 

2.2 Transcontinental Engineering Saga

Panama Canal Project (1881):

 

Note: 30,000 workers died from yellow fever – underscoring machinery's humanitarian value

 

Chapter 3: Internal Combustion Revolution – Awakening of Petroleum Bloodline (1914-1945)

3.1 War-Driven Evolution

 WWI trench-digging demands → Birth of track-mounted gasoline excavators

Key breakthrough: Hydraulic pilot controls replace mechanical linkages (reducing operating force by 90%)

 

3.2 Explosion of Iron Species

 

Model Milestone Modern Descendant

1923 Bucyrus First 360° rotating excavator Caterpillar slewing base

1935 Lorain Hydraulic backhoe patent Komatsu PC backhoe design

Chapter 4: Hydraulic Era – Micron-Level Precision (1948-Present)

4.1 French Genius

1948 Poclain invents fully hydraulic excavator

300% increase in power transmission efficiency

Enabled compound movements (modern machines control 7 cylinders simultaneously)

 

4.2 The Renaissance Philosophy of Used Machinery

At Lianyan Machinery's Refurbishment Center, we rebirth legends:

1950s-era steel arms: Laser-calibrated to 0.05mm valve spool precision

1978 Caterpillar's first hydraulic unit: 40% fuel reduction via electronic upgrades