R-15
- Outer Ø
- 15 mm
- Inner Ø
- 11 mm
- Wall
- 0.25 mm
- Support spacing
- 1.2 m
Ridgeline products
Every water line, in one stainless ecosystem.
Corrugated 316L stainless steel tube, P1 and RidgeLock connections, Flexis connectors and underfloor systems. Select the right assembly for the application and check its own approval scope and installation requirements.
Ridgeline tube
Seven sizes of corrugated 316L stainless steel.
Marine-grade stainless steel core with engineered corrugations and a polyethylene outer sleeve. R-15 to R-54 standard, plus the heat-pump-optimised R-32 HP. Available in 25 m, 50 m, 75 m, 100 m and long-spool coil lengths.
R-22
- Outer Ø
- 22 mm
- Inner Ø
- 18 mm
- Wall
- 0.25 mm
- Support spacing
- 1.2 m
R-28
- Outer Ø
- 28 mm
- Inner Ø
- 23 mm
- Wall
- 0.25 mm
- Support spacing
- 1.2 m
R-32 HP
- Outer Ø
- 32 mm
- Inner Ø
- 27 mm
- Wall
- 0.25 mm
- Support spacing
- 1.8 m
R-35
- Outer Ø
- 38 mm
- Inner Ø
- 33 mm
- Wall
- 0.30 mm
- Support spacing
- 1.8 m
R-42
- Outer Ø
- 50 mm
- Inner Ø
- 41 mm
- Wall
- 0.30 mm
- Support spacing
- 1.8 m
R-54
- Outer Ø
- 61 mm
- Inner Ø
- 51 mm
- Wall
- 0.30 mm
- Support spacing
- 1.8 m
R-32 HP Pre-Insulated
- Outer Ø
- 52 mm
- Inner Ø
- 27 mm
- Insulation
- Closed-cell nitrile rubber
- Lengths
- 15 & 25 m box, 50 & 100 m coil
Entering production. The technical team will contact you about project timing.
Register interestAll sizes 316L marine-grade stainless. P1 fittings certified to 15 bar and up to 99 °C for potable water (Kiwa Reg 4 cert 2604733; 85 °C continuous), with mechanical capability to 150–180 °C for non-potable high-temperature applications such as solar thermal. Ridgelock fittings 10 bar / 85 °C. WRAS approved & KIWA Reg 4 certified.
Ridgelock™ fittings
Any EN 1254 fitting becomes a Ridgeline fitting.
Join Ridgeline corrugated 316L stainless water tube without a press tool. RidgeLock uses the body and nut of a WRAS-approved EN 1254 compression fitting; its complete sealing-ring assembly replaces the copper olive. Prepare and join the tube with a tube cutter, knife and spanners.
Available for R-15, R-22 and R-28. Certified maximum operating conditions: 10 bar and 85 °C under Kiwa Reg 4 certificate 2501716 revision (2), for the assemblies in its schedule. Check the current approvals for the selected connection.
RidgeLock™ Sealing Ring
Patent-pending sealing ring with engineered teeth that mechanically interlock with the Ridgeline tube’s corrugations. Drops into any EN 1254 compression fitting body in place of the copper olive.
Tube sizes: R-15 · R-22 · R-28
Bag of 10: O-15-10 · O-22-10 · O-28-10
Bag of 100: O-15-100 · O-22-100 · O-28-100
Use any EN 1254 fitting body
Source any WRAS-approved EN 1254 compression fitting from any UK merchant: straight unions, elbows, tees, reducing tees, end caps, stop ends, isolating valves. Replace the copper olive with a Ridgelock sealing ring. Done.
Why this works: Ridgelock uses standard EN 1254 fitting bodies and nuts; nothing proprietary except the sealing ring. Universal merchant availability, simple supply chain, fast install.
Working pressure: 10 bar at 85 °C. WRAS + KIWA Reg 4 approved when paired with a WRAS-approved EN 1254 fitting body.
For sizes R-35 and above, see P1 Mechanical fittings.
P1 fittings
Metal-on-metal seal. Wide range. R-15 to R-54.
P1 fittings create a primary metal-on-metal seal with a secondary elastomer backup. Certified to 15 bar and up to 99 °C for potable water (Kiwa Reg 4 cert 2604733), with mechanical capability to 150–180 °C for non-potable high-temperature applications. The connection system for R-35 / R-42 / R-54 tube.
Male BSP
Tube to male BSP thread. For connection to a compatible female-threaded fitting.
Sizes: R-15 · R-22 · R-28 · R-32 HP · R-35 · R-42 · R-54
Female BSP
Tube to female BSP thread. Universal female connection.
Sizes: R-15 · R-22 · R-28 · R-32 HP · R-35 · R-42 · R-54
Female Elbow BSP
90° elbow, tube to female BSP. Pre-formed turn where flex isn't practical. (R-15 to R-28 use a Ridgelock-converted EN 1254 elbow instead.)
Sizes: R-35 · R-42 · R-54
Copper Union
Tube to copper compression. Direct integration with copper systems. Reducing variants also available.
Sizes: R-15 · R-22 · R-28 · R-32 HP · R-35 · R-42 · R-54
Copper Elbow
90° elbow, tube to copper compression. Copper integration with built-in turn.
Sizes: R-15 · R-22 · R-28 · R-32 HP · R-35 · R-42 · R-54
Equal Tee
Three-way junction with equal outlets. Branch off a main run cleanly.
Sizes: R-15 · R-22 · R-28 · R-35 · R-42 · R-54
Reducing Tee
Tee with a smaller branch outlet. Branch into a smaller-diameter spur. Multiple size combinations available.
Sizes: 9 size combinations
Reducing Union
Step a Ridgeline run between two tube diameters in-line.
Sizes: 7 pairings, R-22→R-15 to R-54→R-42
Union
Straight tube-to-tube join, same diameter both ends. Repair, extend, or splice a run.
Sizes: R-15 · R-22 · R-28 · R-35 · R-42 · R-54
RL Bond™ (EB-01)
Bonding connection for use with P1 fittings where the installation requires protective bonding. Have a competent electrical installer assess the requirement and follow the current installation instructions.
Sizes: Universal, single SKU
All P1 fittings supplied as complete assemblies in sealed bags. Patent-pending metal-on-metal seal. For R-15, R-22 and R-28, both RidgeLock and P1 connection systems are available. Use the complete assembly and instructions for the selected system. Male BSP, Female BSP, Copper Union and Copper Elbow are also available in R-32 HP for air source heat pump primary pipework. See the P1 data sheet for the fitting range and technical details. Ask the team to confirm ordering codes and availability for your selected tube size and fittings.
Flexis
Premium 316L stainless flexible connectors.
Replace braided rubber and PEX flexis. Won’t kink, fray or burst. Long-term reliability for final connections.
Tap Connectors
Final connection from valve to tap. Replaces braided rubber flexis.
Female to Female BSP
Both ends female-threaded. Connects two male outlets.
Female to Male BSP
One female, one male. Male-female crossover connection.
ISO to Female BSP
ISO end for boilers and tanks, female BSP at the other.
Copper Compression to Female BSP
Copper compression on one end. Direct integration into existing copper systems.
Underfloor heating
Specialist underfloor tube.
Three product variants engineered for underfloor heating circuits: standard, commercial, and overlay-compatible.
Pro-FAST 15
Standard underfloor heating tube. Works with standard overlay boards, castellated panels and the clip-down method. Pressure drop similar to 12 mm PEX.
OD 15.0 mm · ID 10.0 mm · lengths 100 m / 200 m / 500 m
Pro-FAST 17
Mid-size underfloor tube. Compatible with Pro-FAST 17-specific overlay boards, plus castellated panels and the clip-down method with standard clips. Pressure drop similar to 15 mm PEX.
OD 17.2 mm · ID 12.2 mm · lengths 100 m / 200 m / 500 m
Eco-MAX
Larger-diameter tube for longer circuits and commercial projects. Requires Eco-MAX-specific overlay boards, or oversized clips for the clip-down method. Minimal pressure drop.
OD 22.4 mm · ID 16.6 mm · lengths 100 m / 200 m / 500 m
Accessories
Everything else you need.
Tools, adapters, sealing rings and connection accessories: the small parts that keep the system tight.
Tube Cutters
Metal-wheel pipe cutters sized to match the tube range.
TC-01: 15-28 mm range · TC-02: 35-54 mm range
Spool Rolling Kit
Dedicated spool-roller system for tangle-free dispensing of long-length tube spools (100 m+).
Code: R-SPL-L
PEX adapters
For use with existing PEX connector cores. Transition from PEX systems to Ridgeline without re-piping the manifold.
UFH connection accessories
Underfloor-specific connectors and components for clean manifold tie-ins and screed pass-throughs. Pro-FAST adapters drop into any standard PEX connector core.
Self-amalgamating silicone tape
For repairing damage to the polyethylene outer sleeve in chloride-exposed areas (screed, plaster, cement). Available from Ridgeline.
Need help choosing the right products?
Get a sample, talk to the technical team, or download a data sheet.
316L marine-grade stainless
WRAS approved
KIWA Reg 4 certified
100+ year design life
UK designed