Pipelife PEX Pipe Lengths

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Useful Information

What are PEX Pipe Lengths Used For?

PEX pipe lengths offer the same versatile application as the coils, suitable for hot and cold water services, central heating, and underfloor heating systems. Their pre-cut lengths make them ideal for projects requiring specific, measured installations in both residential and commercial environments.

Pipe cannot be returned, no refunds or exceptions. This is due to the Bespoke, Physical and Technical characteristics of this industrial product. Please double-check your application and sizing, if in doubt call us, we are here to help.

Key Features

  • Material: Manufactured from cross-linked polyethylene, ensuring durability and long-term performance.
  • WRAS Approved: Complies with the Water Regulations Advisory Scheme, guaranteeing safe use in water systems.
  • BS7291 Approval: Meets British standards for safety and quality in plumbing materials.
  • Pre-cut Lengths: Available in lengths up to 3 meters, facilitating easier handling and installation in confined spaces or where specific pipe lengths are required.
  • Pressure Capacity: Can withstand up to 12 bar of cold water pressure (20°C) and 3 bar of hot water pressure (92°C), ensuring reliability under various conditions.
  • Ease of Installation: Designed for quick and straightforward installation, reducing labor time and complexity.

Specifications

  • Material: Crosslinked High-Density Polyethylene (PEX)
  • Available Sizes: 15mm x 3m, 22mm x 3m, 28mm x 3m
  • Coils: Also available in coils up to 100m.
  • Approvals: WRAS Approved (Approval number 2009514), BS7291 Approved
  • Pressure Ratings: Max. 12 bar for cold water (20°C), Max. 3 bar for hot water (92°C)

PEX Pipe Dimensions

Size (mm) Outside Diameter (mm) Wall Thickness (mm)
15 15±0.1 1.5-1.8
22 22±0.1 2.0-2.3
28 28±0.1 2.6-2.9

Working Temperature & Pressure

Application Nominal System Flow Temperature °C  Maximum System Service Temperature °C System Malfunction Temperature °C  System Maximum Working Pressure bar 
Indirect cold water systems 20 20 - 3 1/2
Direct mains-fed cold water systems 20 20 - 12 1/2
Subsurface heating systems  60 83 100 3 1/2
Vented hot water supply systems 65 83 100 3 1/2
Unvented hot water supply systems
including instantaneous heaters
and/or incorporating storage
65 95 100 6
Vented central heating systems and
indirect hot water primary circuits
82 95 100 3 1/2

Sealed central heating systems and
indirect hot water primary circuits

82 105 114 3

Installation Instructions

  1. Planning: Outline the pipe route, avoiding sharp bends and extreme environments.
  2. Cutting: Measure and cut the pipe with a PEX cutter for a straight edge.
  3. Pipe Inserts: If using plastic fittings, insert a pipe stiffener into the pipe end to maintain integrity and prevent collapse.
  4. Fitting Insertion: For push-fit fittings, push into the pipe until secure. For crimp or clamp fittings, position and secure using the appropriate tool.
  5. Routing: Carefully route the pipe, avoiding kinks and using pipe clips to secure it at regular intervals.
  6. Fixture Connection: Connect the pipe to the fixtures, ensuring all connections are tight.
  7. Leak Testing: Turn on the water supply gradually, checking for leaks and addressing any immediately.
  8. Insulation: Insulate the pipe in areas prone to freezing.
  9. Compliance Check: Ensure the installation adheres to local building and plumbing codes.

What is the Difference Between PEX and PB Pipe?

PEX (Crosslinked Polyethylene) and PB (Polybutylene) pipes are both popular for plumbing applications, but they have key differences:

  1. Material Composition: PEX is crosslinked polyethylene, providing enhanced strength and thermal properties. PB is polybutylene, a form of plastic less resistant to high temperatures and pressures compared to PEX.
  2. Durability: PEX pipes offer greater long-term stability and resistance to stress cracking, making them more suitable for high-temperature applications and environments with potential external damage.
  3. Flexibility: Both PEX and PB are flexible, but PEX typically offers superior rigidity, helping to minimize sagging while still allowing easy routing through difficult spaces.
  4. Temperature Resistance: PEX pipes can handle higher temperatures and pressures, making them ideal for hot water systems and central heating. PB pipes are more suited to lower temperature applications.
  5. Longevity: The crosslinking in PEX provides enhanced durability and a longer lifespan, especially in demanding conditions.
  6. Environmental Impact: PEX is 100% recyclable, promoting environmental sustainability, whereas recycling options for PB may be more limited.
  7. Compatibility with Fittings: While both types are compatible with various fitting systems, PEX's compatibility with BS7291 specified systems and its ability to maintain integrity under compressive loads make it a more versatile choice in diverse plumbing scenarios.
  8. Certification and Approvals: PEX often comes with more rigorous certifications and approvals (such as BS7291-Class S and WRAS) due to its enhanced properties, ensuring quality and reliability.

How to Connect Copper Pipe to PEX

Utilizing push-fit fittings is an efficient and user-friendly method to connect copper pipe to PEX pipe. Here's a streamlined guide:

  1. Prepare the Pipes:
    Copper Pipe: Cut the copper pipe to the required length. Ensure the cut is clean and the end is deburred.
    PEX Pipe: Use a PEX cutter to make a straight cut on the PEX pipe.
  2. Select Suitable Push-Fit Fittings: Choose push-fit fittings that are compatible with both copper and PEX pipes.
  3. Install the Fitting on the Copper Pipe: Clean the end of the copper pipe to remove any debris. Push the copper pipe into the push-fit fitting until it reaches the stop. Ensure it's fully seated for a secure connection.
  4. Connect the PEX Pipe: Insert the end of the PEX pipe into the other side of the push-fit fitting, pushing until it hits the stop point.
  5. Secure the Connection: Check that both the copper and PEX pipes are firmly attached to the fitting with no gaps.
  6. Leak Testing: Slowly turn on the water supply and inspect the connection for leaks. If any are found, ensure the pipes are fully inserted into the fitting.
  7. Final Inspection: Ensure that the connection is stable and there is no movement at the joint. The fitting should be snug on both the copper and PEX pipes.

If you require any further information, our excellent customer service team is here to help so please call us on 01794 835835.

 

Grouped product items
CodeProduct NameList PriceYou SaveYou Pay Quantity
375670PEX Barrier Pipe White 3m x 15mm £9.33 50%
£4.66
375671PEX Barrier Pipe White 3m x 22mm £18.28 50%
£9.14
375672PEX Barrier Pipe White 3m x 28mm £25.13 50%
£12.56
374298PEX Barrier Pipe White 20 Pack 3m x 15mm £186.52 59%
£76.47
374299PEX Barrier Pipe White 20 Pack 3m x 22mm £365.64 59%
£149.91
374300PEX Barrier Pipe White 10 Pack 3m x 28mm £251.26 59%
£103.02