Heat pumps and solar systems

Flexible stainless-steel tubes for gas and water

GAS: This system is intended for easy connection of gas appliances and/or repair or exchange of damaged piping. Assembly of gas pipes may be done only by a company authorized to work with gas appliances. For assembly only the approved nuts and gaskets may be used.

WATER: This system is intended for pressure piping containing either potable water(Kombiflex is certified for potable water) or water for industrial purposes. It is suitable for connecting storage water heaters, boilers, radiators, faucets, dishwashers. wherever the advantages of a quick assembly and flexibility are appreciated.

IN GENERAL:The connecting tubes are made of stainless steel, easily shapeable, intended for fixed connections. Once installed, the tube and its bends shall be free from any stress. Usual elbows can be simply substituted by bent tubes (respecting the min. bend radius). The tubes are supplied in colis of 2, 4 or more meters and cut to the desired length on the spot, using the special tools supplied in the toolbox. In order to ensure sufficient tightness, Kombiflex must be connected to fittings of sufficient sealing surface (wall thickness) only - see the chart of fittings supplied. When installing Kombiflex, please follow the instructions and pictures shown in the instruction manual.

Basic Data: Tube material Stainless steel (0,22 mm) AISI 304,316L Working temperature  -20 to +120° Bend radius  R ≥ 2 x tube diameter AISI 316L is available on request.   Working overpressure water gases   combustible non-combustible DN 8-20 16 bar 0,1 bar 16 bar Dn 25 6 bar 0,1 bar 6 bar

KOMBIFLEX RESILIENCE:

The tube can be freely bent, respecting its min. bend radius. The minimum inner bend radius must not be smaller than twice the pipe‘s outer diameter. Torsional strain must be avoided. That shall be respected esp. during nuts tightening and in selecting the connecting position with regard to possible moves that might cause torsion to the tube. When installing Kombiflex, please follow the instructions and pictures shown in the instruction manual. The tube must not get in touch with mortar/concrete. When installing the pipe into a wall, use e.g. Aeroflex insulation to protect it also from contact with mortar/concrete. Its service life is unlimited under normal use. Warranty period is 2 years. No extra precautions are required for transport and storing.

An overview of dimensions and order codes:

SPECIAL TOOLS FOR PREPARING GAS AND WATER TUBES ON THE SPOT

A toolbox (code 3834) contains a tube cutter, two tube clamps and a DN 8 to DN 20 manual termination press, 4x 10 chrome-plated cap nuts with gaskets.

Item Code toolbox 3834 tube cutter DN 8-20 713 tube cutter DN 8-25 3653 tube clamp DN 12 and 16 720 tube clamp DN 8 and 20 3659 manual termination press - stroke type DN 8-20 3430 manual termination press - only for DN 25 7596

HOW TO MAKE KOMBIFLEX GAS AND WATER TUBES BY MEANS OF A HAND STROKE PRESS:

	Measure the length needed and add 4 "waves". Do not forget bends!
	Cut the measured tube portion using the tube cutter contained in the toolbox. Try to make as smooth cut as possible since it will influence the quality of the sealing surface.
	Slide the cap nut onto the pipe and insert the tube end of the into the respective opening in the clamp. The tube must be inserted in such a way that 2 "waves" protrude from the clamp on the side without the recess.
	Insert the clamp into the jig with movable piston so that the protruding "waves" point against the stroke side of the piston.
	Repeatedly strike the pipe head by the piston until a flat sealing surface is formed. This can be heard very well, the originally dampened sound will change to sharp metal-like sound when sealing surface is ready. Repeat the procedure for the other tube end.
	Now the tube is ready to be mounted in its place. Shape it into the desired form and use the appropriate gaskets