MLfP Principles

System Benefits

Technical Information

Pex-Al-Pex Pipe

Fittings

MLP Press type

MLC Compression type

Transition fittings

Replacement Parts

Tools and Accessories

Joining Multi Layer Pipe

Contact Details

MLfP PRINCIPLES

The MLfP system is based on a 5 layer composite pipe which brings the advantages of both metal & plastic pipes whilst overcoming the shortcomings of both materials.

The aluminium core forms the barrier to prevent the passage of oxygen and its thickness is optimised to produce the excellent mechanical properties of the pipe.

The manufacturing process is a single step co-extrusion of the ultrasonic overlap-welded aluminium core along with the bonding adhesive and both inner and outer layers of PEX (cross linked polyethylene).

The preferred method for joining MLfP is with press fittings which provide a quick, safe and reliable connection with a double O-ring seal. An alternative compression fitting range is available.

Service conditions for MLfP- BS7291:2000 Class S
Permissible ambient temperature range -10°C to +40°C.

System type	Nominal system temperature	Maximum system temperature	Maximum system working pressure
Cold water	20°C	20°C	12 bar
Hot water	65°C	95°C *	6 bar
Central heating	82°C	105°C **	3 bar

* short period system malfunction 100°C
** short period system malfunction 114°C

MLfP is tested and certified by numerous regulation authorities around the world including WRAS (certificate 0810010) & KIWA (certificate K50024/01 & K50028/01).

Primaflow has a Quality Management System approved to ISO 9001:2000 with registration number 4002603.