FibreFlex Pro

A highly-efficient reinforced pre-insulated pipe system that’s perfect for district heating applications at higher pressures than a standard PE-Xa pipe.

Hiline FibreFlex Pro is a pre-insulated, flexible pipe system with fibre-reinforced service pipe for use up to 115°C and 10 bar. Thanks to the high-temperature aramid fibre mesh, the FibreFlex Pro pipe system can be used up to a maximum operating temperature of 115 ° C and a pressure of up to 10 bar. The FibreFlex Pro pipe system thus combines the advantages of a flexible pipe system with the operating properties of traditional steel pipe systems and is therefore an innovative, cost-effective alternative.

Efficient Insulation

FibreFlex Pro pipes are insulated in one continuous manufacturing process using a CFC-free bonded polyurethane foam with an outstanding thermal conductivity value of l≤0.021 W/mK at 50°C.

As the insulation layer has a lower thermal conductivity than conventional pre- insulated steel pipes (l=0.07 W/mK), in diameters up to 80 mm, the FibreFlex Pro system's heat loss is lower than insulation series S3 pipes and in larger diameters, heat loss is lower than series S2 pipes (see graph).

When compared to conventional, bonded preinsulated PE-Xa pipes, the heat loss can be up to 17% lower for the FibreFlex system and even better when compared to non-bonded pipes.

Technical Specifications

	FibreFlex Pro
Max continuous operating temperature (30 years)	95°C
Max peak operating temperature	115°C
Maximum Operating Pressure (30 years)	10 bar at 95°C

The FibreFlex Pro pipe system is certified to OFI CERT ZG 200-2 Class Technical Specification, in line with EN 15632-2

Secure Joining System

The FibreFlex Pro system is quick and easy to join using specially designed compression fittings, incorporating a unique polymer sleeve, which is inserted between the fitting’s outer sleeve and the service pipe. A steel insert is then easily fitted inside the pipe, without the need for the pipe end to be expanded. This provides a robust connection with maximum joint integrity.

Complete System

The FibreFlex Pro system has a comprehensive range of fittings and accessories to ensure that it can be adapted to suit all possible configurations – including transitions to pre-insulated pipe systems with different types of service pipe – such as steel.

Complete System

On-Site Flexibility

The service pipe’s reduced wall thickness the system more flexible to install, significantly increasing its range of application in district heating systems.

Hiline FibreFlex Pro - UNO

NOTE: Series 1 insulation thicknesses are shown below, however Series 2 insulation thicknesses are also available.

Size	Service pipe	Nominal	Outer casing
	(d x s mm)	(DN mm)	(D mm)
32/ 76	32.0 x 2.5	27.0	76
40/ 91	40.0 x 2.8	34.4	91
50/111	47.6 x 3.6	40.4	111
63/126	58.5 x 4.0	50.5	126
75/142	69.5 x 4.6	60.3	142
90/162	84.0 x 6.0	72.0	162
110/182	101.0 x 6.5	88.0	182
125/182	116.0 x 6.8	102.4	182
140/202	127.0 x 7.1	112.8	202
160/225	144.0 x 7.5	129.0	225

Hiline FibreFlex Pro - DUO

NOTE: Series 1 insulation thicknesses are shown below, however Series 2 insulation thicknesses are also available.

Size	Service pipe	Nominal	Outer casing
	(d x s mm)	(DN mm)	(D mm)
32 + 32/111	2 x 32.0 x 2.5	27.0 + 27.0	111
40 + 40/126	2 x 40.0 x 2.8	34.4 + 34.4	126
50 + 50/126	2 x 47.6 x 3.6	40.4 + 40.4	126
63 + 63/182	2 x 58.5 x 4.0	50.5 + 50.5	182
75 + 75/202	2 x 69.5 x 4.6	60.3 + 60.3	202
90 + 90/225	2 x 84.0 x 6.0	72.0 + 72.0	225

Training and Support

As manufacturer, it’s important to us to ensure that our systems deliver exceptional performance throughout their working life. Therefore, we have established an array of world-class support services that help our clients every step of the way.

CPD Programme

CPV Ltd is CIBSE-accredited provider of CPD courses for Pre-insulated Heat Network Design and Specification

Electronic Surveillance Systems

We offer full a range of systems and supporting services for the main types of surveillance technologies, including the Nordic, Brandes and HDW systems.

CarboSeal Relining System

We are the UK representatives of the innovative CarboSeal relining system for buried heat networks. This enables failing networks to be repaired without the need to excavate the entire sections of pipe.