CPVC Pipe Systems - General characteristics

Akatherm / FIP, headquartered in Mannheim, Germany, is a leading supplier of CPVC piping components with many years of experience in plastic piping systems. The quality of our products and the services offered by Kwerk.de are subject to a high quality standard. In addition to pipes, sprayed adhesive and threaded fittings, the most varied fittings required for pipeline construction are also available.

Silicone-free manufactured products, flanges and gaskets as well as mounting hardware complete our product range. All the following information has been compiled with the utmost care and knowledge. However, no liability can be derived from the content.

CPVC is an amorphous thermoplastic with a higher chlorine content than PVC-U.
Akaktherm / FIP PVC products are hard PVC materials (without the addition of plasticizers), which, due to their material properties, have been firmly established in industrial piping construction for many years.

The following material data are guidelines, which might differ depending on the chosen treatment. Therefore they can’t be taken over for the finished product.

For further information on all Kwerk GmbH products and services contact our Customer Services Department as detailed below.

Customer Services
Tel: 0049 2602 999730
Fax: 0049 2602 9907329
Email: info@kwerk.de

Material properties

The material data given are standard values that may differ depending on the processing method. Therefore, they can not be easily transferred to finished parts.

Characteristic	Value	Unit
density	1,50	g/cm³
ZOD notched impact strenght at (23°C)	54	J/m
Tensile elongation break	50	%
Thermal conductivity 23°C	0,16	W/(m °C)
VICAT softening point (B/50)	108	°C
oxygen index	60	%

Pressure-Temperature-graph

The graph is based on a surrounding temperature of 20°C and water as a medium. The pressures in the chart are valid for a life span of 25 years and an included safety margin of 2.5.

Advantages of the CPVC system

Due to the resulting interactions between the chlorine atoms in the polymer chains, the CPVC material has, in addition to a high degree of hardness and dimensional stability, excellent chemical resistance at higher temperatures (advantage over PVC-U). These properties predestine the material CPVC for the production of pressurized piping systems

Chemical resistance

CPVC has excellent chemical resistance, even at high temperatures and media concentrations. Compared to a large number of dilute or concentrated acids and alkalis, alkalis and aliphatics, CPVC has to be classified as resistant. Opposite media like esters, ketones, chlorinated hydrocarbons and some others. Solvents is CPVC swelling or solvable. CPVC is not resistant to strong oxidants. The chemical resistance, however, depends on many factors, such as operating temperature, operating pressure, concentration and other factors. In this case, you can look up the resistance in our resistance list or contact our product management.

Chemical resistance

Temperature and pressure application areas

CPVC can be used in the operating temperature range from 0 ° C to +90 ° C (short-term), whereby kwerk.de does not recommend the continuous use of CPVC in areas above +80 ° C. Due to the high chlorine content, the advantages of CPVC are particularly evident in the range of elevated operating temperatures. With regard to the internal pressure load capacity of pipes and fittings, we refer to the above "pressure-temperature diagram". For the maximum internal pressure load capacity of fittings, please also note the instructions in the corresponding
Fittings or consult with our product management.

Electrical Properties

CPVC is a polar, amorphous thermoplastic with excellent insulation properties. Due to the resulting possible static charge, CPVC must not be used in applications where there is a risk of ignition or explosion
Like all thermoplastics, CPVC has a relatively high thermal expansion coefficient (0.07 mm / m ° C). This fact must be taken into account in advance when planning the pipeline system. There are various possibilities for this: installation of expansion bends or compensators, as well as the "fixed" clamping via fixed points. Since this requires sound knowledge in dealing with plastics, we recommend carrying out a corresponding system design with PC computer programs

Low weight

CPVC systems weigh only half compared to copper pipe installations and only 1/5 compared to steel pipe systems. This ensures easier handling and opens up areas of application in which, in conjunction with the special properties of CPVC, metallic systems can be replaced

Easy connection

CPVC piping components are bonded together by gluing. The production of adhesive joints requires sufficient expertise, i.a. in training courses that can be acquired. Concerning. For gluing, please observe the special specifications of the adhesive suppliers or the adhesive instructions published by KRV (Kunststoffrohrverband e.V.) as well as the corresponding DMS leaflets.

standardize

The pipes, fittings and fittings supplied by kwerk are made according to the most important national and international standards
Standards and guidelines produced, such as:
- DIN 8079
- DIN 8080
- DIN 2999
- ISO 228
- ISO 727
- EN ISO 15493

approvals

- Supplier confirmation for use in drinking water applications
- Supplier confirmation for the use of food applications
- WRAS-UK = pipes and fittings for cold water applications
- NSF-USA = Pipes and fittings for cold water applications
- Lloyd’s Register
- TA-Luft approval for 2 and 3-way ball valves
- TA-Luft approval for FK butterfly valves
- TA-Luft approval for diaphragm valves
- DIBt approvals for 2-way ball valves type VKD

tube support

Frequently, pipes with "unhindered change in length" are guided in suspended pipe clamps. The pipe has the possibility to slide in the pipe clamp. Therefore, these constructions must be as stable as possible, yet they must not interfere with the axial movement of the tube. The metallic clamp types must not have any sharp edges or burrs that could damage the pipe. In the immediate vicinity of the clamp, there must be no obstacles (such as moldings, sleeves, welds) that affect the mobility of the pipeline. When designing piping systems with "prevented" length change, guide clamps must be installed. You must ensure that the tube does not buckle laterally due to the occurring compression. The possibility to slide the pipe is not required here in contrast to the sliding clamp.

Support for heavy pipeline parts

Fittings, filters, or other heavy piping parts should always be secured independently of the piping to keep inadmissible loads from the piping system, e.g. can be used for intermediate flanges of butterfly valves instead of loose flanges valve mounting plates or ball valves special ball valve holders.

Pipe clamp distances

Pipe clamp distances for tubes made of CPVC (PN 10) in a medium with a density <1 g/cm³

Pipe diameter in mm	20°C	30°C	40°C	50°C	60°C	70°C	80°C	90°C
16	1000	900	900	850	750	675	600	500
20	1150	1100	1025	950	875	775	700	600
25	1200	1150	1100	1000	900	800	700	600
32	1250	1200	1100	1000	900	800	700	700
40	1500	1400	1300	1250	1150	1050	900	800
50	1650	1600	1500	1400	1300	1200	1100	900
63	1850	1750	1850	1600	1500	1350	1250	1050
75	2050	1950	1850	1750	1650	1500	1350	1200
90	2250	2100	2000	1900	1800	1650	1500	1300
110	2500	2350	2200	2100	1950	1800	1650	1450
125	2650	2500	2350	2250	2100	1950	1750	1550
140	2800	2650	2500	2350	2200	2050	1850	1650
160	3000	2850	2700	2550	2400	2200	2000	1750
180	3150	3000	2850	2700	2500	2300	2100	1850
200	3350	3150	3000	2850	2650	2450	2200	1950
225	3550	3350	3200	3000	2800	2600	2350	2100