Copper pipes and fittings for plumbing — a guarantee of quality for 200 years! — The climate in the house

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copper pipes and fittings

The vast major­i­ty of home­own­ers in Euro­pean coun­tries pre­fer cop­per pip­ing. In France and Aus­tralia, the gas sup­ply sys­tem is 100% cop­per. The obvi­ous advan­tage of cop­per pipes, in com­par­i­son with cast iron, steel, plas­tic, polypropy­lene, met­al-plas­tic, is dura­bil­i­ty.

The proof is the open­ing of a pipeline in France that has exist­ed for more than 200 years, while the cop­per ele­ments of the sys­tem remained vir­tu­al­ly unscathed.

Advantages and disadvantages

Advan­tages of cop­per pipes due to the prop­er­ties of the met­al itself:

copper-pipes-for-heating

  • Long ser­vice life;
  • Cor­ro­sion resis­tance;
  • Low coef­fi­cient of lin­ear expan­sion — 17.010-6;
  • Resis­tant to tem­per­a­ture changes (-200 to 2000FROM);
  • Aes­thet­ics;
  • UV resis­tant;
  • Bac­te­rio­sta­t­ic.

The dis­ad­van­tage of cop­per pipelines is the high cost of mate­r­i­al and com­po­nents.com­pared to oth­er mate­ri­als.

When inter­act­ing with steel, cop­per accel­er­ates the cor­ro­sion process, there­fore, when installing a pipeline, cop­per-brass fit­tings must be used in cop­per-steel joints.

Properties and applications of copper

Cop­per is a unique duc­tile met­alwhich has high ther­mal con­duc­tiv­i­ty and elec­tri­cal con­duc­tiv­i­ty, does not inter­act with water.

Based on its phys­i­cal prop­er­ties, cop­per is used in the man­u­fac­ture of elec­tri­cal wires, pipes for gas, heat­ing and water sys­tems, as well as in the pro­duc­tion of heat exchang­ers.

Features and dimensions

copper plumbing

The size of cop­per pipes is deter­mined by the inter­nal sec­tion (from wall to wall), so their diam­e­ter does not cor­re­spond to the stan­dard dimen­sions of plas­tic and steel prod­ucts. For pipeline sys­tems, pipes with a diam­e­ter of 8, 12, 15, 22, 28, 35, 42, 54 mm are more often used.

Clas­si­fi­ca­tion of cop­per pipes:

  1. By type — annealed and unan­nealed. The first ones are soft­er and more plas­tic, they are sold in rolls of dif­fer­ent lengths (from 10 to 100 m).
  2. By sec­tion type — round, rec­tan­gu­lar and square. In plumb­ing sys­tems, pipes with a round cross sec­tion are used.
  3. As of – soft, semi-hard, hard. Soft — used for com­plex instal­la­tion of the pipeline, pro­vid­ing for the pres­ence of bends, turns. Sol­id — used as ris­ers and laid on straight sec­tions.

Due to the low coef­fi­cient of lin­ear expan­sion, cop­per pipes are used when installing a warm floor under a screed.

Comparison with pipes from other materials

Cop­per Plas­tic Steel Cast iron
Life­time From 50 years old Over 50 years 15 years, gal­va­nized — 30 years Up to 100 years
Dif­fi­cul­ty of instal­la­tion It is car­ried out by sol­der­ing, using a gas burn­er or by press­ing Weld­ing with a plas­tic weld­ing machine Weld­ing with a sim­ple weld­ing machine High com­plex­i­ty of instal­la­tion, requir­ing spe­cial Equip­ment
Sus­cep­ti­bil­i­ty to cor­ro­sion low not sub­ject exposed low
Expan­sion fac­tor 17.010-6 18010-6 11.010-6 10.410-6
Price high low above aver­age aver­age

Advan­tages of cop­per pipelines over plas­tic ones: long ser­vice life and resis­tance to exter­nal irri­tants (rodents, ultra­vi­o­let, tem­per­a­ture changes in water).



As for pipelines made of steel, in terms of their prop­er­ties, they are clear­ly infe­ri­or to cop­per due to the prop­er­ties of the met­al. Advan­tages of cop­per over steel:

  • Long ser­vice life;
  • Envi­ron­men­tal friend­li­ness;
  • Aes­thet­ics (cop­per pipes do not need to be paint­ed);
  • Cor­ro­sion resis­tance;
  • Lighter weight.

Mounting

installation of copper pipes

Instal­la­tion of sol­id and semi-sol­id pipes is car­ried out by sol­der­ing or press­ing. To install soft pipes, only com­pres­sion fit­tings are required.

Sol­der­ing is done with hard or soft sol­der. Hard sol­der­ing is car­ried out using sol­der (wire) and a gas burn­er.

The mate­r­i­al is heat­ed to a high tem­per­a­ture with a gas burn­er, sol­der is used, which, under the influ­ence of high tem­per­a­tures, spreads on its own and fills the joints, the joints are fas­tened with a fit­ting (cou­pling, tee, etc.). This method pro­vides high strength of the seam and is suit­able for gas sup­ply sys­tems.

Soft sol­der­ing con­sists of cre­at­ing a tight joint using flux paste, sol­der (tin, lead, zinc) and a sol­der­ing iron. Before instal­la­tion, the sur­face is cleaned of exter­nal con­t­a­m­i­nants, cov­ered with a flux, the con­nec­tions are fixed with a fit­ting, and sol­der is applied using a sol­der­ing iron.

With the press­ing method, the pipes are insert­ed all the way into the fit­ting (crimp) and the con­nec­tion is fixed with a pressin which the met­al is lit­er­al­ly pressed into the met­al, which ensures dura­bil­i­ty and tight­ness of the con­nec­tion.

Fitting

The ori­gin of the word fit­ting is bor­rowed from Eng­lish (“Fit”), which trans­lates as a con­nec­tion. Fit­tings are used for pipeline instal­la­tion: con­nec­tion, branch­ing, change of direc­tion, length­en­ing and tran­si­tion to anoth­er diam­e­ter.

Fit­tings are clas­si­fied by appoint­ment:

sectional fittings

  1. Con­nect­ing. Cou­pling — used to fas­ten pipes of the same diam­e­ter, adapter cou­pling — to con­nect dif­fer­ent diam­e­ters, com­bined cou­pling — to fas­ten dif­fer­ent mate­ri­als, for exam­ple, cop­per and steel.
  2. Branch­ing. Tees (150thir­ty0.450.900), cross­es: one-plane, two-plane, left, right, frontal, hor­i­zon­tal (150 ‚thir­ty0 .450.900), sol­dered and thread­ed man­i­folds (the num­ber of out­lets is not lim­it­ed).
  3. squares, branch­es and bypass elbows (sin­gle-bell, dou­ble-bell). Are used for bends, turns, bypass­es of obsta­cles of the pipeline.
  4. Stubs – for sol­der­ing and thread­ed (inter­nal and exter­nal).

Dis­tin­guish fit­tings accord­ing to the method of fas­ten­ing:

  1. Thread­ed. Equipped with a thread on the inside, with the help of which the fix­a­tion takes place.
  2. For sol­der­ing or for weld­ing — the most com­mon fit­tings used for sol­der­ing instal­la­tion.
  3. Com­pres­sion and press fit­tings. Used for mount­ing by press­ing. Tight­ness is ensured by a clamp­ing ring.
  4. Crimp. Used in the assem­bly of met­al-plas­tic, cop­per, alu­minum pipelines by twist­ing. Tight­ness is ensured by a clamp­ing embossed ring.
  5. Self-lock­ing. Fix­a­tion occurs with the help of a crimp toothed ring. This con­nec­tion is very con­ve­nient, because after assem­bly it remains col­lapsi­ble.

For cop­per pipes, sol­dered cop­per and brass fit­tings are used. (sol­der­ing method), crimp and com­pres­sion (press method) and thread­ed (the fit­ting is sol­dered to the pipe, then fixed by twist­ing).

Corrosion susceptibility

how to solder copper pipes

Cop­per is resis­tant to cor­ro­sion under nor­mal atmos­pher­ic con­di­tions, how­ev­er, when exposed to chem­i­cal ele­ments, it can rust.

The sever­i­ty of cor­ro­sion will depend on the com­po­si­tion of the water: chlo­rine and low PH lev­els have a neg­a­tive effect.

Prices

The price of pipes depends on the amount of mate­r­i­al used.i.e. diam­e­ter and length.

The table shows the aver­age cost in rubles per 1 meter.

Diam­e­ter (mm) eight 12 fif­teen 22 28 35 42 54
unan­nealed 175.00 200.00 250.00 400.00 500.00 650.00 900.00 1500.00
annealed 170.00 210.00 300.00 480.00 750.00

Reviews

Anton, Voskre­sen­sk

“I want­ed to build a cop­per water sup­ply sys­tem, I doubt­ed for a long time, because every­one writes that the sol­der­ing process is labo­ri­ous and requires cer­tain skills. Made up my mind. As a result, in 8 hours he sol­dered the plumb­ing on his own. The instal­la­tion process is much eas­i­er than it is described. And the cost was quite accept­able.”

Vik­tor, Vladi­vos­tok

“20 years ago I sol­dered a cop­per pipeline in my mother’s apart­ment, it still stands. My fam­i­ly and I moved to a new house, I would like a cop­per water sup­ply sys­tem, but it turns out to be very expen­sive, you will have to be con­tent with plas­tic. And so, it is impos­si­ble to come up with a more rea­son­able and high-qual­i­ty met­al than cop­per.”

Which pipes to choose for plumb­ing:

In EU, cop­per is not as pop­u­lar as in Europe. This is due to the high cost of the met­al, rel­a­tive to oth­er mate­ri­als. But if you con­sid­er the dura­bil­i­ty of cop­per, then this will be one of the most eco­nom­i­cal options for pip­ing sys­tems.


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