Material for hot water pipes
In accordance usability and the type of material flowing, hot water pipes must be able to withstand a maximum temperature of water delivered.
Material for water pipes panasBahan suitable for hot water plumbing include:
- Copper
- Polybutylene (PB)
- Chlorinated polyvinylchloride (CPVC or PVCc)
- Polypropylene Random (PP-R)
- Cross-linked Polyethylene (PEX).
In accordance Solutions G12/AS1 and AS / NZS 3500.4 requires at a distance of the first meter length of pipe from the water heater is copper.
Value of PEX varies, and some will tolerate water value of 100 ° C for a significant period of time.
Thermoplastic pipe pressure rating.
Pipes are classified according to their pressure rating (PN) at 20 ° C. For example, the pipe has rated PN16 pressure rating of 160 MPa at 20 ° C.
The thermoplastic pipe loses strength and ability to withstand pressure with increasing temperature, and this is different with different materials .
 |
| Material for hot water pipes |
Rating (rate of loss of strength) several factors commonly used pipe materials:
Temp.
(° C)
|
Polibutilena
|
Polyvinyl
-chloride
|
Chlorinated polyvinyl
-chloride
|
polybutylene
|
cross-linked polyethylene
|
20
|
1,0
|
1,0
|
1,0
|
1,0
|
1,0
|
27
|
1,0
|
0,9
|
1,0
|
0,9
|
0,7
|
38
|
0,9
|
0,6
|
0,8
|
0,8
|
0,8
|
49
|
0,8
|
0,4
|
0,7
|
0,7
|
0,8
|
60
|
0,7
|
0,2
|
0,5
|
0,4
|
0,7
|
71
|
0,6
|
*
|
0,4
|
*
|
0,7
|
82
|
0,6
|
0,4
|
0,6
| ||
93
|
0,4
|
0,2
|
0,5
| ||
104
|
*
|
*
|
*
|
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