Interplast distributor in Ukraine
PP‑RCT Aqua‑Plus: boiler rooms, substations and heating networks in one system from Ø20 to Ø315
Aqua-Plus Prins pre-insulated pipes, bare Aqua-Plus pipes, fittings, adapters, valves and manifolds from one manufacturer. We supply the whole project from your specification and send a quote within an hour during Kyiv business hours.
What we supply
From the boiler room to the building: the system that fits your project
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Boiler rooms and substations
Bare glass-fibre Aqua-Plus pipes, fittings, manifolds, ball valves and brass adapters to metal. Boiler piping, pump groups, distribution headers.
Aqua-Plus · Ø20-315 · SDR 6-17 -
Underground heating networks
Aqua-Plus Prins pre-insulated pipes with HDPE jacket, pre-insulated elbows and tees, joint insulation kits. Any diameter from Ø20 to Ø315.
Aqua-Plus Prins · HDPE · up to 315/450 -
Above-ground and indoor networks
Aqua-Plus Prins in a white M-PVC jacket: pipe racks, car parks, basements, technical floors. The jacket is UV-resistant and does not spread fire.
Aqua-Plus Prins · M-PVC · B-s2,d0 -
Industry and cooling
Chilled water networks and cooling towers, food production, process liquids. Polypropylene resists most chemicals; fluid temperature from -15 °C.
Aqua-Plus and Prins · per design
One supply for the whole project
- Aqua-Plus Prins pre-insulated pipes
- Bare Aqua-Plus pipes, SDR 6, 7.4, 9, 11 and 17
- Fittings for socket and butt fusion welding
- Pre-insulated elbows and tees, joint casings and foam
- Brass adapters to metal and threads
- Ball valves and manifolds
Everything from one manufacturer: one point of responsibility and one 10-year warranty. No minimum order; delivery is priced for the volume and address.
The two systems we supply
PP-RCT Aqua-Plus or RK flexible pipe: where each one is stronger
We are not tied to one technology, so we choose the system for the project. Many networks combine both: the boiler room and above-ground sections in Aqua-Plus, long underground runs in flexible pipe.
Ø20-315, pre-insulated and bare
up to Ø160, pre-insulated only
underground, on pipe racks, in basements and car parks
underground
straight pipes 4 and 5.8 m, 11.6 m to order
coils up to 770 m
socket or butt fusion welding, factory pre-insulated fittings
compression fittings only at the ends of a section
up to 95 °C, peaks 110 °C; 10 bar (SDR 7.4) or 6 bar (SDR 9)
up to 115 °C and up to 16 bar
boiler rooms, substations, networks with many nodes and branches, above-ground and indoor runs, diameters above Ø160
long underground runs up to Ø160, building connections, routes around obstacles
both fit: we price both options
both fit: we price both options
Supply above 95 °C or pressure above 10 bar? PP-RCT does not fit here: up to Ø160 we use RK FibreFlex Pro flexible pipe (115 °C, up to 16 bar); larger diameters we price in steel.
RK flexible pipesThree layers, made in the factory
- PP-RCT or PP-R service pipeMultilayer, glass-fibre reinforced: low thermal expansion, no corrosion and no scale build-up. SDR 7.4 or SDR 9.
- Polyurethane insulationDensity above 60 kg/m³ to EN 253, thermal conductivity 0.028 W/m·K (measured by FFI, Germany). Fills the whole space with no air voids.
- M-PVC or HDPE jacketWhite M-PVC for above-ground and indoor networks: UV-resistant, lead-free, fire class B-s2,d0. HDPE jacket for underground networks.
- Fluid temperature
- up to 95 °Cpeaks up to 110 °C
- Working pressure
- 10 barSDR 7.4; SDR 9 up to 6 bar
- Ambient temperature
- -40...+80 °Cfor above-ground networks
- Service life
- 50 yearsin 24/7 operation
- System expansion
- 0.016mm/m·K, less than copper
- Oxygen barrier
- KIWAEN ISO 17455
- Jacket fire class
- B-s2,d0EN 13501-1, M-PVC
- Pipe length
- 4 / 5.8 m11.6 m to order
Pre-insulated pipes from 20/40 to 315/450
Table for the M-PVC jacket (above-ground and indoor). For underground networks with an HDPE jacket, sizes up to 315/450 mm; we confirm the exact jacket in the quote. Bare Aqua-Plus pipes: Ø20-315, SDR 6, 7.4, 9, 11 and 17.
| Service pipe / jacket, mm | Insulation, mm | Jacket wall, mm | Length, m |
|---|---|---|---|
| 20/40 | 8.0 | 2.0 | 4 |
| 20/63 | 19.3 | 2.2 | 4 |
| 25/50 | 10.3 | 2.2 | 4 |
| 25/63 | 16.8 | 2.2 | 4 |
| 32/63 | 13.3 | 2.2 | 4 |
| 40/75 | 15.3 | 2.2 | 4 |
| 50/90 | 17.8 | 2.2 | 4 |
| 63/100 | 16.0 | 2.5 | 4 |
| 75/125 | 22.5 | 2.5 | 4 |
| 90/140 | 21.8 | 3.2 | 4 |
| 110/160 | 21.8 | 3.2 | 4 |
| 125/200 | 34.0 | 3.5 | 4 |
| 160/225 | 28.0 | 4.5 | 5.8 |
| 200/250 | 20.5 | 4.5 | 5.8 |
| 250/315 | 26.5 | 6.0 | 5.8 |
| 315/400 | 34.3 | 8.2 | 5.8 |
Data from the Interplast technical manual. Heat losses per size, weights and expansion calculations are in the catalogue. Pipes up to 11.6 m and HDPE jackets are made to order.
Aqua-Plus Prins catalogueDesign, heat losses, calculations, fittings, installation and pipe tables. 48 pages in Ukrainian; tables and figures read without translation. Download PDF 3.9 MBWhat factory insulation gives you over insulation applied on site
- 55-70%lower heat losses than conventional insulation fitted to the pipe on sitemeasured by FFI, Germany
- +35-45%longer spans between supports on pipe racks: the pipe barely sagsInterplast catalogue
- Zero maintenancethe jacket withstands rain, snow, sun, rodents and birds; the insulation stays dry
- Zero corrosionno metal in the pipe, no scale build-up, the bore does not shrink over the years
- ASHRAE 90.1insulation thickness meets the US standard required for LEED building certification
- B-s2,d0the M-PVC jacket is self-extinguishing and does not spread fire: suitable for car parks and technical floors
Our projects
Aqua-Plus Prins we have supplied in Ukraine
Heating networkKirovohrad region DN200/315 
Heating networkDnipropetrovsk region DN200/315 Shopping and leisure centreabove-ground in the car park DN125/200 - DN160/250 
Heating networkKryvyi Rih 
Heating networkholiday resort, Lviv region 
Hot water networkKyiv
How Aqua-Plus Prins pipes are joined
- Ends come preparedThe factory strips 150 mm of insulation from the ends (up to Ø63) or 225 mm (from Ø75), so welding can start right away.
- Welding the service pipeSocket fusion at 260 °C up to Ø125; butt fusion or electrofusion from Ø160.
- Casing over the jointAn M-PVC or HDPE casing slides over the joint. Elbows and tees are available ready-made and pre-insulated.
- FoamingThe casing is filled with two-component polyurethane through a Ø20 mm hole. The volume for each size is listed in the catalogue.
- Sealing and testingThe hole is sealed. Underground joints are air-tested at 0.2 bar for 2 minutes to EN 489.
Manufacturer: Interplast, Greece
Interplast has made polymer pipes since 1998. Pipes and fittings are produced at its own 40,000 m² plant in Komotini; brass parts at the plant of its subsidiary ELVIOM near Athens. Exports to more than 50 countries.
Aqua-Plus Prins was named the most innovative Greek-made product of 2018-2019 in the Made in Greece competition. Interplast pipes run in the district heating network of the LEGO factory in Hungary, and Aqua-Plus in hotels, shopping centres and factories in Greece, Cyprus, Qatar and Serbia.
manufacturer's warranty on Aqua-Plus pipes and fittings, insured with Allianz for up to EUR 3,000,000.
Independent institutes SKZ, AENOR and WRAS take samples from production and stock for testing every six months.
Frequently asked questions
When to choose Aqua-Plus and when flexible pipe?
Aqua-Plus is stronger in boiler rooms, substations, networks with many nodes, above ground, inside buildings and at diameters above Ø160. RK flexible pipe is stronger on long underground runs up to Ø160: coils up to 770 m without joints. For underground networks up to Ø160 we price both options.
Is there a minimum order?
No. Delivery is priced separately for the volume and address.
Can I order only fittings or valves?
Yes. Aqua-Plus fittings, brass adapters, ball valves and manifolds are supplied both separately and together with pipe.
Can it be buried?
Yes. For underground networks the pipe comes with an HDPE jacket; after foaming, the joints are air-tested for tightness to EN 489.
What is the warranty?
10-year manufacturer's warranty on Aqua-Plus pipes and fittings, insured with Allianz for up to EUR 3,000,000.
Is it suitable for drinking and hot water?
Yes. Aqua-Plus pipes and fittings are certified for drinking water by WRAS (UK) and DVGW (Germany).
What if the supply temperature is above 95 °C?
PP-RCT is rated for 95 °C with short peaks up to 110 °C. For 115 °C up to Ø160 choose RK FibreFlex Pro flexible pipe; larger diameters we price in steel.
How long is delivery?
It depends on diameter, jacket and volume. We state the exact date in the quote together with the calculation.
Who do you work with?
Design and installation companies, general contractors, district heating utilities, industrial companies and donor-funded projects. We supply the project from its specification and help with tender documents.
Contacts