Cooling, chilled, RO, DM, raw and hot water

PPRCT^® FR Composite Pipe and Fittings

Name: PPRCT FR Composite Piping
Brand: PPRCT

One material across the whole water block. Glass-fibre reinforced PP-RCT with a carbon UV shell replaces PP, PP-R and CPVC with a single specification, a bigger bore and a quarter of the thermal expansion.

FR stands for fibre-glass reinforced. PPRCT is a registered trade mark, No. 3676896.

Get a sized BOQ PPRCT catalogue

20–630 mmPipe and fitting range

0.035Thermal expansion, mm/m·K

10–20 yrsService in direct sunlight

Up to 25 yrsDesign life at rated duty

One material for the water block

Most plants split water services between PP-R, PP and CPVC: three materials, three jointing methods and three spare inventories. PPRCT covers all of them.

95 mm
More bore, same trench
MRS 12.5 against 10 for standard PP lets the wall be thinner at the same pressure class: 95 mm of bore at 110 mm PN 10, against 90 mm.
35 mm
A quarter of the movement
A 40 m run at a 25 K temperature swing moves 35 mm, not the 150 mm plain PP would. Fewer loops and fewer supports.
2.58%
Outdoors without cladding
Carbon black content of the UV layer, measured by CIPET in 2025. Cooling-tower and roof runs need no cladding or repainting.
5.93 MPa
Holds up hot
Creep rupture strength at 70 °C, for hot condensate and high-temperature circuits where PP-R and CPVC derate.
1000 h
Tested at 95 °C
CIPET held PPRCT at 3.8 MPa hoop stress for 1000 hours at 95 °C to ISO 15874-2: no swelling, no bursting.
0 bead
Fused, not cemented
Socket fusion to 160 mm and electrofusion from 200 to 630 mm. No solvent-cement cure time and no bead in the bore.

Bore and flow area gained

Same outside diameter, compared with PP, PP-R and HDPE. Pick a size to see the difference to scale.

Pipe size (outside diameter)

Bores at PN 16 from 20 to 63 mm and PN 10 from 75 to 315 mm, from the Anjney PPRCT catalogue. Pump power saving depends on layout, head, fittings and duty cycle.

PP / PP-R / HDPE bore: –
PPRCT bore: –
More flow area: –

Allowable operating pressure

From the Anjney life expectancy chart for PPRCT and PPCH pipe carrying water, safety factor 1.25. Choose temperature, years of service and pressure class.

Water temperature Years of service Pressure class 15.7bar allowable

Values outside the chart's range are not shown: above 70 °C the chart stops at 25 years, and at 95 °C at 5 years. The full chart, including thinner pipe series, is in Downloads.

Against what is specified today

Figures from the Anjney PPRCT catalogue and solar-plant technical note.

Parameter	PPRCT FR Composite	PP / PP-R	CPVC
Design stress	4.3 MPa	2.13 MPa	Lower creep margin when hot
Bore at 110 mm, PN 10	95 mm	90 mm	Comparable to PP-R
Thermal expansion	0.035 mm/m·K	About 0.15 mm/m·K	About 0.062 mm/m·K
Direct sunlight	10–20 years, carbon UV layer	2–3 years; not permitted unprotected	Needs cladding; chalks and embrittles
Jointing	Socket fusion to 160 mm, electrofusion 200–630 mm	Butt weld leaves an internal bead	Solvent cement, cure time

Detailed comparisons: PPRCT vs metal PPRCT vs HDPE PPRCT vs PPR

Specifications

From the PPRCT technical data sheet and CIPET test reports.

Pipe standard	ISO 15874-2:2012
Fittings standard	DIN 16962 Parts 5 to 10
Raw material	Classified to ISO 9080; MRS 12.5 MPa, CRS 5.9 MPa
Construction	Multi-layer: 60% glass fibre, 40% PPRCT inner and upper layers
Colour	Green identification strip, UV-resistant black outer layer
Pressure classes	PN 10 (SDR 11), PN 16 (SDR 7.4), PN 20 (SDR 6)
Sizes	20–50 mm: PN 16, PN 20; 63–630 mm: PN 10, PN 16, PN 20
Temperature	−5 °C to +95 °C, per pipe selection chart
Surface roughness	Ra 0.1–0.3 µm; Hazen–Williams C 145–150
Thermal conductivity	0.135 Btu/hr·ft·°F
Third-party tests	CIPET: 1000 h at 95 °C, hoop stress 3.8 MPa, no swelling or bursting (report No. 306, 2017). CIPET: carbon black 2.58%, dispersion satisfactory, UV stabiliser present (report No. 5250, 2025)
Standard length	5 m
Jointing	Socket fusion 20–160 mm, electrofusion 200–630 mm

Life expectancy is stated at the rated duty for the service concerned and is not a warranty period.

PPRCT fittings

Moulded fittings to DIN 16962, PN 25 up to 160 mm, and electrofusion fittings from 200 to 630 mm. Threaded transition fittings are made for PPCH compressed-air lines only.

Fitting	Jointing	PPRCT range
Coupler	Socket fusion fittings	20–160 mm, PN 25
Elbow 90°	Socket fusion fittings	20–160 mm, PN 25
Elbow 45°	Socket fusion fittings	20–160 mm, PN 25
Long radius elbow	Socket fusion fittings	20, 32, 50, 63 mm, PN 25
Equal tee	Socket fusion fittings	20–160 mm, PN 25
Reducing tee	Socket fusion fittings	20–160 mm, PN 25
Reducer	Socket fusion fittings	20–160 mm, PN 25
End cap	Socket fusion fittings	20–160 mm, PN 25
Electrofusion coupler	Electrofusion fittings	200–630 mm
Electrofusion elbow 90°	Electrofusion fittings	200–630 mm
Electrofusion equal tee	Electrofusion fittings	200–630 mm
Electrofusion core flange	Electrofusion fittings	200–630 mm
Electrofusion reducer	Electrofusion fittings	200 × 160 mm upward
Core flange (stub end, collar)	Flanges and branch connections	20–160 mm, PN 25
Step flange (backing ring)	Flanges and branch connections	20–630 mm
Branch adaptor	Flanges and branch connections	All relevant sizes

See PPRCT fittings with drawings

Where PPRCT goes

Cooling and chilled water: headers, risers and distribution to process and chiller loads
Cooling towers, outdoors: supply and return on the carbon UV layer, no cladding
Hot water and condensate: hot-water condensation return and high-temperature circuits
Raw, city, soft, RO and DM water: incoming water, softeners, RO product and DM distribution
ETP, WTP and process lines: consult us on fluid, concentration and temperature

We do not offer PPRCT for ultra-pure water polish loops; that loop stays in the material your UPW vendor specifies. For acids, alkalis and chemical drains, use PPH.

PPRCT supply and return header at a cooling tower — Cooling tower header

PPRCT pump discharge headers — Pump headers

PPRCT chilled water connections at air handling units — Chilled water to air handlers

PPRCT questions

What is PPRCT pipe?

PPRCT FR Composite is a multi-layer pipe of 60% glass fibre and 40% PP-RCT (polypropylene random copolymer with modified crystallinity), with a UV-resistant carbon black outer layer and a green identification strip. It is made to ISO 15874-2:2012 in 20 to 630 mm.

What is the difference between PPR and PPRCT pipe?

PP-RCT has a higher minimum required strength (MRS 12.5 against 10 MPa) and a much higher creep strength when hot (5.93 against 3.2–3.6 MPa at 70 °C). The wall can be thinner at the same pressure class, so the bore is larger. Anjney adds a glass-fibre core that cuts thermal expansion to 0.035 mm/m·K and a carbon UV layer for outdoor runs.

Can PPRCT carry hot water?

Yes, from −5 to +95 °C, with allowable pressure falling as temperature rises. For example, from our life expectancy chart for water, PN 16 (SDR 7.4) pipe is rated 13.5 bar at 70 °C for 10 years of service. Use the pressure tool above for other cases.

Can PPRCT be installed in direct sunlight?

Yes. Its carbon black outer layer gives 10 to 20 years in direct sunlight, and CIPET measured 2.58% carbon black with satisfactory dispersion and UV stabiliser present. Plain PP-R is rated 2 to 3 years and is not permitted unprotected.

Is PPRCT suitable for chemicals?

PPRCT is used on ETP, WTP and some process lines, but suitability depends on the fluid, concentration, temperature and pressure together, so consult us first. For acids, alkalis and chemical drains we recommend PPH, and we do not recommend threaded fittings in chemical service.

How is PPRCT joined?

By socket fusion from 20 to 160 mm and electrofusion from 200 to 630 mm. Electrofusion leaves no bead in the bore, so there is no extra pump head at each joint and no edge for scale or biofilm.

PPRCT downloads

Enquiry

Send us your line schedule

Tell us the service, pipe sizes and approximate run lengths. Our technical sales team sizes the network and returns a bill of material, with an installed-cost comparison against your current specification.

PPRCT® FR Composite Pipe and Fittings

One material for the water block

More bore, same trench

A quarter of the movement

Outdoors without cladding

Holds up hot

Tested at 95 °C

Fused, not cemented