When it comes to plumbing materials, there has been a search for a real alternative in the Turkish construction industry in the last decade. The market, which has been divided into galvanized and copper pipes for decades, has turned to plastic systems since the 1990s. Today, two plastic systems stand out as competitors: PPR and PEX.
Both materials can be used in hot and cold water installations. If we exclude PermaConditions, their theoretical performances are close to each other. However, in practical applications, significant differences emerge in terms of ease of installation, long-term cost, maintenance requirements and risk profile. This guide objectively evaluates both systems from a technical and economic perspective.
What is PPR (PPRC) Pipe System?
PPR is the abbreviation for Polypropylene Random Copolymer. "Random" means that the ethane groups in the polypropylene chain are arranged irregularly; This irregularity increases the flexibility and impact resistance of the material. In applications in Türkiye, it is mostly called PPRC (C = Copolymer).
The most distinctive feature of PPR pipe is that it makes a permanent connection using the socket fusion method. When the pipe and fitting are brought together by heating, the homogeneous bond formed is theoretically stronger than the pipe itself. Chemical erosion resistance is high, corrosion does not occur and the inner surface remains smooth and there is no loss of fluidity in the long term.
Disadvantage: special for assemblywelding setrequires and incorrect assembly may not be visually noticeable. It is also rigid; It is strong in linear lines, but does not provide flexibility in curved and narrow areas.
What is PEX Pipe System?
PEX stands for cross-linked polyethylene. Interchain bonds are created by applying specific chemical or radiation treatments to polyethylene chains; This structure gives PEX much higher temperature and chemical resistance than HDPE.
PEX pipes are flexible and have high tensile strength. It can be folded and laid over long distances without any additional parts. It is especially preferred in radiant heating (floor heating) systems and compact housing designs. No special welding tool is required for assembly; press connection or clamp connection elements are used.
Disadvantage: fasteners (brass, copper or stainless) are expensive and this cost accumulates in long lines. Some types of PEX may be sensitive to water containing chlorine. Since the connection mechanism is mechanical, the theoretical risk of leakage is higher compared to chemical bonding.
Technical Comparison Chart
- Working temperature:PPR 70°C (SDR11: 95°C) / PEX 95°C
- Working pressure (20°C):PPR PN20: 20 bar / PEX: 10–16 bar (depending on type)
- Flexibility:PPR rigid / PEX flexible (minimum bending radius 8xDiameter)
- UV resistance:Both are low; not suitable for outdoor use
- Chlorinated water resistance:PPR excellent / PEX-a and PEX-b good, PEX-c limited
- Assembly tool:PPR: welding set required / PEX: press tool or clamp tool
- Pipe cost:PPR is generally more economical/similar to PEX
- Connection cost:PPR low (fusion, few inserts) / PEX high (brass connection at every joint)
Installation Comparison
PPR installation is a technique that takes a few days to learn but practice to master. Socket fusion errors are often not visually apparent. BecauseKnowing welding error sources well ve perform a pressure testIt is mandatory.
PEX assembly is done by press or clamp connection method. Installation with the correct tool can be verified visually; However, if the tool quality is low, the missing pressed connection will not be visually apparent. In underfloor heating cycles, PEX minimizes the number of additional parts due to the possibility of long and uninterrupted laying.
Long Term Cost Analysis
Let's take a routing project consisting of one hundred connection points as an example:
- PPR system:Pipe + fitting cost is moderate. Resource set one-time investment (1500–3000 TL). It does not require additional parts in every connection — only geometric changes such as elbows, tees, valves. Maintenance cost is low; connections last a lifetime.
- PEX system:Pipe cost is similar or slightly higher. There is a cost of renting or purchasing a press machine (5000–15000 TL). Brass or copper fasteners are required at each connection point (50–150 TL/piece). Additional cost of 5000–15000 TL for one hundred connections. Fasteners may pose a risk of erosion over time.
In large-scale housing projects, the PPR system is generally approximately 20-35% more economical. In small-scale or special-form projects, PEX's flexibility can save money.
Which System is Suitable for Which Project?
The PPR system is clearly superior when:
- Standard residential and commercial building hot-cold water installation
- Long planar pipelines
- Industrial hot water and heating circuits
- Applications requiring high pressure
- Projects where both installation and operating costs need to be optimized
The PEX system is advantageous in the following situations:
- Floor heating loops (radiant heating)
- In-wall flexible pipe laying
- Narrow and winding routes
- Emergency repair scenarios where the welding machine cannot be used
Many large projects use both systems: mains PPR, underfloor heating loops or distribution sleeves PEX. This mixed approach produces ideal results.
Turkish Market and Regulatory Framework
TS EN ISO 15874 (PPR) and TS EN ISO 15875 (PEX) standards are valid in Türkiye. TSE certified products should be selected. Although both systems are guaranteed to comply with official standards, local standards may differ in export projects; about thisYou can get support from our technical team.
As a result, PPR system for standard residential installation andsuitable welding setThe choice is the most balanced solution both technically and economically. For specific applications, it is recommended to evaluate both systems and seek expert advice.
Chemical Resistance Comparison
One of the most important factors in the longevity of plumbing systems is the material's ability to resist chemical components in the transported water. Both PPR and PEX are strong materials in this respect, but there are some differences.
- Chlorine resistance:PPR pipe shows excellent resistance to chlorinated mains water. Chlorine resistance among PEX pipes varies depending on the type: While PEX-a and PEX-b generally show good resistance, some PEX-c productions may be subject to degradation due to chlorine in the long term.
- pH range:Both are suitable for water in the pH range of 6–11. Both materials may experience problems in extremely acidic or basic water.
- Oxygen permeability:Standard PPR does not transmit oxygen. Standard PEX is partially permeable to oxygen; This increases the risk of corrosion in heating systems. PEX with oxygen barrier (PEX-EVOH) solves this problem but increases the cost.
Sound Transmission and Acoustic Performance
Sound insulation is becoming increasingly important in modern housing projects. Plumbing pipes can transmit water sound and mechanical vibration.
Since the PPR pipe is rigid, the water hammer sound is transmitted through the body. The flexibility of the PEX pipe dampens this vibration; Therefore, it is possible to install an acoustically quieter system.
However, if the correct bracket and vibration-dampening mounting materials are used in both systems, the acoustic difference can be minimized.
Thermal Expansion Management
Plastic pipes lengthen and shorten depending on temperature. The thermal expansion coefficient of PPR pipe is around 0.15 mm/(m·K). PEX has similar values. Multi-layer aluminum lining PPR pipe reduces this value to 0.03–0.05 mm/(m·K); This is a value close to galvanized pipe.
On long straight lines, thermal expansion must be compensated by using an elbow (U-libra or Z-compensator) in the middle of the line. This compensation system is mandatory on straight lines longer than 10 m.Our technical teamoffers consultancy in large project line design.
Assembly Time Comparison
Assembly time comparison for small-scale projects (single flat):
- PPR:Machine warm-up time (5–10 minutes) + 30–60 seconds per combination. A competent plumber can make 80–120 joints per hour.
- PEX:Pipe laying is fast; However, additional time is required for clamping or press connection at each connection point. Total assembly time varies depending on the project.
In large projects (multi-storey buildings), the total installation time of PPR-dominant systems is generally reported to be 10–15% shorter. The main reason for this is that the welding technique does not require additional fasteners.
Final Decision: Project Type is the Determining Factor
The choice between PPR and PEX boils down to "which is better?" rather than "Which one is more suitable for this project?" It is based on the answer to the question. Both systems are proven technologies tested with international standards.
For the vast majority—standard residential and commercial installations—the PPR system's accessibility, cost-effectiveness, and high joint quality make it the preferred choice. PPR systems andwelding equipmentFor detailed information, visit our page orwith our technical teamcontact us.
Mixed Systems Approach — The Best of Two Worlds
It is possible to benefit from the advantages of both systems in large-scale housing projects. A mixed plumbing strategy can be organized as follows:
- Main columns and long straight lines:PPR should be preferred due to its low cost and high joint quality.
- Intra-flat distribution:PPR branch is the suitable solution up to the room valve.
- Underfloor heating cycles:PEX-EVOH is ideal for flexibility and oxygen barrier.
Acoustic Performance Comparison
Sound insulation is gaining importance in modern housing projects. Since PPR pipe is rigid, it transmits the sound of water hammer blow. The flexibility of the PEX pipe dampens this vibration; An acoustically quieter system can be installed. If the correct vibration dampening mounting materials are used in both systems, the acoustic difference can be minimized.
Thermal Expansion and Compensation
The thermal expansion coefficient of PPR pipe is around 0.15 mm/(m·K). Multi-layer aluminum lining PPR pipe reduces this value to 0.03 mm/(m·K). A compensation system is mandatory on long straight lines.Our technical teamoffers consultancy in large project line design. for PPR equipmentresource sets ve our entire product rangeCheck it out.
System Selection According to Climate and Geography
Türkiye's climate diversity—from the mild climate of the Aegean to the harsh winters of Eastern Anatolia—influences the choice of plumbing system. Frost risk management is critical in cold regions; The risk of freezing is handled differently for both systems.
- PPR pipe:Since it is rigid, its capacity to expand during freezing is low; It must be drained or heated before freezing.
- PEX pipe:Thanks to its flexibility, it can absorb a limited amount of freezing; however, frost protection measures are equally important in both systems.
In installations closed to summer use, PPR lines must be left depressurized and drained. This rule applies to both systems.
Long Term Care Comparison
Here is the comparison in terms of long-term maintenance requirements after correct installation:
- PPR:Permanent weld joints do not require maintenance. The pipeline itself operates without problems for 50+ years under correct operating conditions. Periodic inspection of valves is recommended.
- PEX:Mechanical fasteners require periodic leakage checks. Mineral accumulation may occur in brass fasteners in the long term; This is especially problematic in hard water.
Check the water hardness in your area and plan the system's long-term maintenance package accordingly. For detailed technical consultancywith our teamcontact us.
The Dominant Position of PPR in the Turkish Construction Industry
PPR pipe system is by far the dominant choice in the housing construction and infrastructure sector in Türkiye. There are multiple reasons for this.
The first reason is cost advantage. PPR pipes and fittings are produced locally in Türkiye, which offers competitive prices compared to imported alternatives. In large-scale housing projects, this cost advantage constitutes a significant part of the total construction budget.
The second reason is infrastructure maturity. It has a wide network of PPR welding machine, roll set and pipe suppliers in Türkiye. Supply problems are rare and spare parts are easy to access. The majority of plumbers in the sector are familiar with the PPR welding technique.
The third reason is the long accumulation of field evidence. Millions of PPR installation joints have been made in Türkiye since the mid-1990s. The long-term performance data of this accumulation concretely proves the reliability of the system.
The PEX system stands out as a valuable alternative in certain applications. The flexibility of PEX is preferred in underfloor heating projects, flexible flooring areas and special building designs. However, for standard residential installations, PPR and a quality welding set remain reliable options both today and tomorrow.Eral Makina welding sets ve technical consultancyContact us for.
Industry Trends and Future Perspective
Plastic piping system technology is constantly evolving. New material developments such as PP-RCT (high temperature copolymer of polypropylene) are pushing up the performance ceiling of the PPR system. These materials can sustain full pressure values up to 95°C; This makes PPR a stronger alternative in applications such as solar energy systems and high temperature heat circuits.
On the PEX front, PEX-EVOH with oxygen barrier is expected to become the standard in closed heating circuits. In systems with metal components at risk of corrosion, the corrosion prevention advantage of this material will play a decisive role.
Both systems will maintain their place in the construction industry for the foreseeable future. PPR will continue to be the dominant choice for low-cost large-scale housing projects; PEX, on the other hand, will fill a specific niche in special applications (underfloor heating, situations requiring high flexibility).
If you want the most up-to-date technical advice for your projectwith our technical teamcontact us. for PPR systemswelding equipmentfor large diameter applicationssingle welding machinesand for plumbing complementsauxiliary equipmentYou can review our pages.
Expert Opinion: Which System Should You Start With?
If you are someone planning a plumbing project for the first time, we recommend starting with a PPR system. The reason is simple: PPR is a system with a more pronounced learning curve, but once learned, it is a technology that offers permanent and reliable combinations with an extremely narrow margin of error. While the initial investment (resource set) is moderate, long-term maintenance cost is minimal. PPR pipes, fittings and technical support can be easily found in every province in Türkiye.
The PEX system can be developed after mastering PPR or as an additional field of expertise for certain applications (underfloor heating, flexible flooring). A plumber who knows both systems and can make the right choice in the field has one of the most valuable profiles in the market.
For your system selection and equipment needsour resource set pagevisit orwith our technical teamTalk about your project. You can find more guides on PPR in our blog archives:set selection, source errors, machine maintenance.
All these evaluations show that the right choice depends on the characteristics of the project. There is no single "best system"; There is a system that best suits your project. Getting technical advice to determine this is the most effective way to prevent wrong investment.
Both systems have strengths and weaknesses. However, in the right application, both offer reliable and long-lasting plumbing systems. Consider project scale, budget and long-term maintenance capacity together when making your technical decisions.