Yes, pressure limitations exist
Brass Press Fittings have defined pressure limits. Maximum working pressure is specified for each fitting. It depends on diameter and temperature. Example: PN20 means 20 bar at 20°C.
Pressure decreases with temperature
As temperature rises, pressure capacity drops. At 70°C, PN20 drops to 10 bar. At 90°C, it drops to 7 bar. Brass Press Fittings pressure rating decreases with heat.
Standard pressure classes
The most common ratings are PN16 and PN20. PN25 is available for high pressure. PN10 is for low-pressure systems. Brass Press Fittings class depends on the system.
Pressure limits for gas systems
For gas systems, pressure is typically up to 4 bar. Above this, special fittings are needed. Brass Press Fittings for gas have lower limits.
Effect of diameter on pressure
Larger diameters have lower pressure ratings. Thinner walls reduce capacity. Brass Press Fittings pressure depends on size.
Example: heating system pressure
Temperature is 70°C, pressure is 3 bar. Brass Press Fittings PN20 are sufficient. Example: heating operates without problems.
Example: industrial steam system
Steam at 120°C and 5 bar. Brass Press Fittings cannot be used. Example: steel fittings are required.
Example: hydraulic system
Oil at 150 bar pressure. Brass Press Fittings are not suitable. Example: steel press fittings are required.
Test pressure requirements
Test pressure is 1.5 times working pressure. Fittings must withstand this. Brass Press Fittings are factory-tested.
Pressure marking on fittings
PN rating is marked on the fitting body. Always check the marking. Brass Press Fittings pressure is clearly indicated.
Selection recommendations
Choose a PN rating with 20-30% safety margin. Consider the operating temperature. Brass Press Fittings selection is important for safety.
Final pressure limitations summary
Brass Press Fittings pressure is limited by PN class. PN20 is sufficient for water and heating. For steam and high pressure, they are not suitable. Temperature reduces the pressure capacity. Always check the marking. Brass Press Fittings proper selection ensures safety. Example: for industrial systems, select with a safety margin.