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Blog posts of '2025' 'May'

Avoid These Common Mistakes When Using MLCP Press Fittings

Avoid These 12 Common Mistakes When Using MLCP Press Fittings

Modern plumbing and heating systems increasingly rely on Multilayer Composite Pipes (MLCP) due to their durability, flexibility, and ease of installation. However, even with such advantages, many installers still make avoidable mistakes—leading to leaks, structural issues, or even complete system failure.

Whether you're a beginner or a seasoned plumber, this comprehensive guide will walk you through 12 of the most common MLCP press fitting mistakes and how to steer clear of them. From tool compatibility to post-installation testing, each point is crucial for ensuring a long-lasting, leak-free installation.

Introduction to MLCP Press Fittings

MLCP press fittings combine metal and plastic layers into a single piping system that offers the best of both materials: the flexibility and corrosion resistance of plastic, along with the stability of metal.

They’re widely used in:

  • Potable water systems

  • Underfloor heating

  • Radiator connections

  • Compressed air installations

These systems are designed to simplify installation while maintaining high durability and efficiency—but only if used correctly.

Why Proper Use of MLCP Fittings Matters

Cutting corners in the installation process doesn’t just compromise the system’s performance—it can also result in:

  • Water leaks that damage property

  • Voided warranties

  • Costly rework and downtime

  • Health risks due to contamination

Proper use ensures:

  • System longevity

  • Pressure resistance

  • Leak-free joints

  • Compliance with standards like WRAS or DVGW

1. Ignoring Manufacturer Guidelines

Consequences of Not Following Specifications

Every manufacturer includes detailed documentation outlining:

  • Recommended insertion depths

  • Pipe preparation steps

  • Pressing guidelines

Ignoring these guidelines often leads to incorrect installation and, eventually, system failure. You may think you've seen enough fittings to skip the manual, but slight design variations across brands make these documents indispensable.

2. Using Incompatible Tools

Tool Calibration and Compatibility

Using off-brand or worn-out tools can result in:

  • Incomplete presses

  • Damaged fittings

  • Voided warranties

Always:

  • Use tools certified by the fitting manufacturer

  • Regularly calibrate pressing jaws

  • Avoid mixing old and new tool models without checking compatibility

3. Incorrect Pipe Cutting Techniques

Burrs and Their Effect on Seals

Using a hacksaw or blunt blade can create uneven edges and burrs. These imperfections may:

  • Tear the O-ring during insertion

  • Prevent a proper seal

Always use a dedicated MLCP pipe cutter to ensure a clean, perpendicular cut.

4. Skipping Pipe Deburring and Calibration

Importance of Smooth Ends for Secure Press

Failing to deburr and calibrate a pipe can:

  • Push air pockets into the fitting

  • Compromise the O-ring seal

  • Cause high-pressure leaks

Deburring tools are inexpensive and crucial for secure connections.

5. Inadequate Pipe Insertion Depth

Depth Marking and Measurement Tools

Not inserting the pipe fully leads to:

  • Weak mechanical joints

  • Unpressed fittings

  • Leaks over time

Use a depth gauge or marking tool to indicate how far the pipe should be pushed into the fitting.

6. Misalignment Before Pressing

Stress Points and Leaks

Misalignment places unnecessary stress on joints, increasing the risk of:

  • O-ring displacement

  • Structural fatigue

  • Delayed system failure

Ensure the pipe is straight and fully seated before pressing.

7. Over-Pressing or Under-Pressing Fittings

How to Identify Proper Press Strength

Most pressing tools automate the process, but issues still occur due to:

  • Low battery on cordless tools

  • Manual misjudgement with hand tools

Verify your tool’s pressure settings or upgrade to models with press force feedback.

8. Mixing Brands of Pipe and Fittings

Material Tolerances and Seal Integrity

Brand A’s pipe may not fit Brand B’s fitting—even if they look similar. Mismatching can cause:

  • Improper seating

  • Seal failure due to size variance

  • Legal liability in warranty claims

Stick to one system from a single manufacturer whenever possible.

9. Neglecting Pressure Testing Post-Installation

When and How to Perform Testing

A visual inspection is never enough. Pressure testing is the only way to catch:

  • Hairline cracks

  • Loose fittings

  • Faulty seals

Follow your region’s regulations and manufacturer testing protocols to perform this crucial step.

10. Failing to Inspect O-Rings and Seals

Causes of Premature Seal Failure

Before insertion, always check the O-ring for:

  • Dust or debris

  • Tears or kinks

  • Incorrect placement

Even a tiny imperfection can ruin the seal, especially under high pressure.

11. Installing in Non-Recommended Environments

High Temperature, UV, and Freezing Concerns

MLCP systems aren't one-size-fits-all. Common issues include:

  • UV degradation in outdoor installs

  • Brittle pipes in freezing climates

  • Melting or expansion in high-heat zones

Always review the environmental limits for the selected pipe system.

12. Lack of Training or Certification

Why Hands-On Experience Matters

Many fitting systems require certified training. DIY installs or untrained professionals often:

  • Use the wrong tools

  • Misinterpret instructions

  • Skip vital steps like pressure testing

Invest in a certification course to future-proof your skills and ensure professional-quality work.

FAQs About MLCP Press Fittings

Q1: What is the lifespan of an MLCP system?

Answer: Properly installed, it can last over 50 years with minimal maintenance.

Q2: Can I use MLCP for both hot and cold water?

Answer: Yes, as long as the temperature ratings are adhered to per manufacturer specs.

Q3: Is MLCP suitable for underground installations?

Answer: Yes, but only with proper insulation and following local building codes.

Q4: How do I know if a fitting has been pressed correctly?

Answer: Most fittings include visual indicators; also, pressure testing confirms the integrity.

Q5: Can MLCP fittings be reused?

Answer: No. Once pressed, they are permanent and cannot be reused.

Q6: Is pressure testing mandatory?

Answer: While not always legally required, it's highly recommended and often mandated by warranties.

Conclusion

Mastering MLCP press fittings is more than just owning the right tools—it's about understanding the fine details of proper installation. Avoiding these 12 common mistakes will not only improve your efficiency but also ensure the long-term performance and safety of your plumbing systems.

Whether you’re handling residential projects or commercial installations, sticking to best practices and continuous learning is the key to success.

Shop MLCP Press Fittings as PressIT

PressIT Heating/Water 90degrees Bend 16x16

Milwaukee Press Tool: Is It Worth the Investment?

Introduction to the Milwaukee Press Tool

When it comes to professional-grade tools, Milwaukee is a brand that commands respect. The Milwaukee Press Tool has carved out a place in the plumbing and HVAC world, known for its robust build, cordless convenience, and time-saving design. But with its premium price tag, many are left wondering: is it truly worth the investment? This article explores the features, benefits, comparisons, and long-term value of the Milwaukee Press Tool to help you make an informed decision.

Why the Milwaukee Press Tool Is Gaining Popularity

It’s no surprise that more professionals are switching to press tools over traditional methods like soldering or threading. Milwaukee’s version stands out thanks to:

  • Cordless design for maximum mobility

  • Rapid pressing cycles

  • Versatility with a variety of pipe materials

Its rise in popularity is largely due to its blend of power, reliability, and safety—qualities that professionals look for when choosing equipment for daily use.

Understanding Press Tools and Their Applications

What Is a Press Tool?

A press tool is a mechanical device that joins pipes using pressure and specialised fittings, eliminating the need for heat or open flames. It’s an essential tool in plumbing, HVAC, and refrigeration systems.

Common Use Cases

  • Residential and commercial plumbing

  • Heating system installations

  • Gas line fittings

  • Retrofit projects where soldering isn't feasible

By using Milwaukee's press tool, workers can perform these tasks faster, safer, and with less hassle.

Key Features of the Milwaukee Press Tool

Durability and Build Quality

Milwaukee tools are built to last. The press tool features:

  • Reinforced steel jaws

  • Rugged outer casing

  • IP-rated protection against dust and water

These components ensure the tool can withstand tough jobsite conditions, making it a reliable long-term investment.

Compatibility With Fittings

Milwaukee tools are compatible with a wide range of press fittings including:

  • Copper

  • Stainless steel

  • PEX systems (with appropriate adapters)

This versatility allows tradespeople to work on multiple pipe types without changing tools frequently.

Battery Life and Efficiency

One of the biggest advantages is its M18™ REDLITHIUM™ battery:

  • Up to 50 presses per charge

  • Fast recharge time

  • Interchangeable with other Milwaukee M18 tools

That means more work, less downtime, and seamless integration with your existing Milwaukee gear.

Comparing Milwaukee With Other Brands

Milwaukee vs. Ridgid

FeatureMilwaukeeRidgid
PriceSlightly lowerPremium
ErgonomicsLightweightBulkier
Fitting CompatibilityBroadBroad
Warranty5 yearsLifetime

Verdict: Ridgid may appeal to long-time users, but Milwaukee offers a more modern, ergonomic, and cost-effective alternative.

Milwaukee vs. DeWalt

DeWalt’s press tools are less common, and in some areas, limited in compatibility. Milwaukee offers:

  • Broader pipe size support

  • More jobsite-ready features

  • Wider tool ecosystem

Milwaukee wins for those looking for a full-service solution.

Benefits of Using the Milwaukee Press Tool

Speed and Efficiency

Press connections take less than 5 seconds. Compared to soldering or threading, that’s a game changer.

Safety Advantages

No flames, fumes, or heat means:

  • Reduced fire hazards

  • Lower insurance risks

  • No burn injuries

Long-Term Cost Savings

Although the initial investment is steep, the labour and time savings add up quickly. Plus, it reduces the need for extra equipment like soldering kits or fire safety gear.

Who Should Invest in a Milwaukee Press Tool?

This tool is best suited for:

  • Licensed plumbers

  • HVAC contractors

  • Maintenance professionals

  • Facility managers

It’s also a great fit for apprentices looking to build a long-term tool kit with high ROI potential.

Common Challenges and How to Overcome Them

While the Milwaukee press tool is top-tier, some users experience:

  • Compatibility issues with niche fittings (solution: always check manufacturer specs)

  • Upfront cost concerns (solution: finance options or tool rental programs)

  • Jaw maintenance needs (solution: regular cleaning and occasional lubrication)

Pro tip: Keep a backup battery and a jaw cleaner kit on hand for uninterrupted workflow.

Maintenance and Longevity

Cleaning Tips

  • Wipe tool and jaws after every use

  • Avoid exposure to extreme moisture

  • Use compressed air to remove debris

Recommended Service Intervals

Milwaukee recommends a service check every 40,000 cycles or once per year. Routine care significantly extends the tool's life.

Cost Breakdown and Return on Investment (ROI)

Cost ElementEstimate
Tool Kit£1,800–£2,200
Annual Maintenance£100–£200
Job Time SavingsUp to 30% faster per project
ROI Timeline6–12 months for regular users

While the price tag may seem hefty, the reduced labour costs, faster turnover, and improved safety lead to a strong ROI.

Environmental and Energy Efficiency Considerations

Milwaukee’s battery-powered press tool reduces:

  • Emissions from soldering equipment

  • Energy usage on job sites

  • Material waste through misaligned fittings

Its eco-conscious design is another reason why green-certified contractors prefer it.

Frequently Asked Questions

How long does the battery last during continuous use?

The M18 battery lasts through 40–50 presses per charge, depending on pipe size.

Can I use the tool in tight spaces?

Yes! Its compact jaw and rotating head allow pressing in tight, awkward spots.

What types of fittings are compatible?

It supports V, M, and DWV profile fittings across copper, stainless, and PEX systems.

Is it suitable for beginners?

Absolutely. It's intuitive and easy to learn, especially with Milwaukee’s tutorial resources.

How do I know if it’s time for servicing?

Look for slow pressing cycles, unusual noises, or a service alert on the display.

Is there a warranty included?

Yes, Milwaukee offers a 5-year limited warranty on the tool and 2 years on batteries.

Conclusion: Is the Milwaukee Press Tool Worth It?

In short, yes—if you're a serious tradesperson or contractor. The Milwaukee Press Tool combines:

  • Exceptional speed

  • Proven safety

  • Broad compatibility

  • Outstanding reliability

While the investment is considerable, the return in efficiency, safety, and productivity makes it well worth it.

For those building a future in plumbing or HVAC, the Milwaukee Press Tool isn’t just another gadget—it’s a core piece of kit that pays off job after job.

Shop Milwaukee Press Tools Now

Milwaukee M12 Sub Compact Force Logic Hydraulic Press Tool | Profile-M | Incl. 3 Jaws

Milwaukee M18 Force Logic Press Tool | Profile-M | Incl. 3 Jaws |

 

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