The fittings offered by NIBCO in the press system are made of copper and bronze.


High quality materials, adherence to the technological regime as well as production control and compliance with the standards guarantee high quality of the delivered product.


The copper P5000 and PG5000 copper terminal fittings are made of copper CW024A in accordance with the requirements of the PN-EN 12449 standard.


The fittings with threaded ends series P4000 and PG4000 are made of bronze CC499K-DW in accordance with the requirements of PN - EN 1982. The PZH certificate confirms the possibility of using copper and bronze fittings for drinking water. The bronze alloy used is resistant to various types of corrosion.


The sealing element (o-ring) is made of black EPDM for water or yellow HNBR for gas. Both types of O-rings have a PI (Press Indicator) system and meet the requirements of the PN-EN 549 standard.


Connecting threads meet the requirements of the PN - EN 10226-1 standard and the PN - EN ISO 228-1 standard.


Advantages and arguments.


The following arguments support the use of connection techniques in a press system:

- connection technique: inseparable, resistant to stretching and torsion, and durable and tight

- connection elements compatible within the specified tolerance

- selection of clamping tools

- the quality of the connection method confirmed by international certificates

- thanks to the cylindrical running of the pipe, it is impossible to nonaxially insert it into the coupling seat and damage the sealing element

- safety of the clamp thanks to the hexagon press before and after the notch and on the notch with o-ring

- no fire hazard - no heat or fire due to the connection

- patented sealing ring

- high aesthetics of connection of pipes with fittings as well as the entire installation.

- the fastest way to connect - the time it takes to make a call is a few seconds

- complete system of connectors in a large range of diameters (12 - 108 mm)

- in the event of a failure and repair of an existing working installation, leaked water does not limit the possibility of making a connection.

- wide temperature range. Minimum temperature -50⁰C, maximum + 150⁰C. Range of continuous operating temperatures -30⁰C to 110⁰C (in gas systems - 20⁰C to 60⁰C)

- use in the installations of the following media: hot and cold water, steam, acids, oils and silicone greases, fats, solvents and others (in gas systems, among others: natural gas, liquid gas fuel oil).

Detailed scope to obtain in the technical department.


The construction of fittings.


Compression fittings in the diameter range 12-54 mm have a cylindrical guide ring that allows axial insertion of the pipe into the fitting seat before notching with a sealing o-ring. The pressing takes place using an electric crimper and profile V jaws (REMS). After crimping, the connection is inseparable and the fitting is deformed. The connection of the connector to the copper pipe has a hexagonal shape before and after the notch. The sealing of the connection are EPDM O-rings (in water systems) or HNBR O-rings (in gas systems) patented, special construction with the PI system (Press Indicator). Poorly clamped connections during leak testing at pressures from 0.1 to 6 bar are immediately detectable.


The 64-108 mm diameter fittings do not have a cylindrical ring before the notch with a sealing o-ring. This is dictated by technical considerations. The sealing ring is made of synthetic EPDM rubber. Pressings of large size fittings are made using Novopress tools and M-profile clamps


Tools used for the assembly for press fittings.


Use crimping tools with adequate clamping force for the terminal block. REMS crimping tools and clamping jaws are recommended. The minimum constant clamping force is 32 kN, the maximum value is 36 kN - it is a necessary condition that ensures that in the diameter range up to 54 mm, sufficient clamping force reserves will be available. Too high clamping force may cause damage to the joint as well as damage to the jaw itself. Inspection and maintenance of clamping tools and clamping jaws must be carried out by an authorized service unit, at least once a year or at the latest after performing 10,000 clamp operations.


Metric Solder Copper Fittings

Copper fittings (5000 series)

  • 45° and 90° return bends

  • 45° and 90° elbows

  • tees and transition fittings and fitting reducers

  • full and partial cross-overs

  • nuts, caps, and supports

Bronze and brass fittings (4000 series)

  • threaded and socket fittings for soldering

  • threaded and socket tees for soldering

  • threaded and socket tees for soldering with fixing clamps

  • threaded nuts, caps and socket nuts and caps for soldering


  • cold and hot water installations

  • CO installations

  • gas installations

  • liquid and medical gas installations

  • air conditioning and cooling installations

  • compressed air installations

  • oil installations

Wrot copper fittings: High Residual Phosphorus

  • Phosphorus Deoxidized, P from 0.015 to 0.040% Cu (including AG) >99.90%

  • Cu-DHP acc. lS0 1190-1 UNS C12200

  • ASTM B 584 C84400

  • Cu,Sn,Zn,Pb in compliance with DIN1705

Solder or bronze system pressure rating:

  • 1,6MPa (8mm-28mm) at 110 C°

  • 1 MPa (35mm - 108 mm) at 110 C°

Max. working temperature up to 204º C



  • Copper is a highly durable material.

  • There is no hazard of corrosion in a correctly designed and installed central heating system.

  • Copper is resistant to temperature changes and UV exposure.

  • The inner surface of a copper fitting is smooth, which limits the accumulation of corrosive by-products in pipes.

  • Copper system does not require maintenance or repair.

  • Copper is bacteriostatic material, which stops the growth of water bacteria and finally destroys them totally.

  • There is no permeation into copper system of pollutants in liquid or gaseous form.

  • Copper system is easy to recycle, and thus does not pose any danger to the natural environment.

  • Copper system is relatively easy to assemble.

  • Copper system can be tested seconds after installment process is finished.

  • Copper pipes - soft type are easy to bend, thus reducing the number of fittings.

  • Copper pipes - hard type (drawn) - do not require many supports.



1. Measure tube and cut accurately to the desired length, perpendicular to its axis, using a wheel tube cutter or hacksaw.

2. Ream all cut tube ends to the full inside diameter and remove the small burr created by the cutting operation. The end of a pipe should not be chamfered.

3. Remove all oxides and surface soil from the tube ends and fitting cups using abrasive cloth, abrasive pads or properly sized fitting brush.

4. Apply a flux to the outside of the tube and inside of the cup of the fitting carefully so that surfaces to be joined are completely covered. USE FLUX SPARINGLY.

5.Insert tube end into fitting cup, making sure that the tube is seated against the base of the fitting cup. A slight twisting motion ensures even coverage by the flux.

6. Apply a flame perpendicular to the tube. Next move the flame onto the fitting in the cup area. When the solder begins to melt, apply heat to the base of the cup to aid capillary action in drawing the molten solder into the cup towards the heat source.

7. When soldering the tee remember to keep a proper order of connection depending on the position within the system.

8. Allow the completed joint to cool naturally. When cool, wipe off any remaining flux with a wet cloth.

SOLDERING is applicable in: hot and cold-water systems, central heating systems with a working temperature of up to 110.CSOLDERING is applicable in: hot and cold-water systems, central heating systems with a working temperature of up to 110.C

BRAZING a joining process wherein coalescence is produced by heating, usually between 590° C and 815" C, and by using a non-ferrous filler metal that has a melting point below that of the tube or fitting. The filler metal is distributed between the closely fitted surfaces of the joint by capillary attraction. Brazing is applicable in: central heating systems with a working temperature in excess of 110.C, gas systems, compressed air and oil systems. The procedure for brazing is very much like that described for soldering. However, brazing does require a greater temperature