Bruse Pure - Technical Information
TECHNOLOGY
Valve technology for healthy living
Valve materials are crucial in drinking water installations. The advanced copper-zinc alloy CUPHIN® used in Bruse valves and fittings not only meet highest technical and mechanical demands but also comply with present and future requirements in regard to hygiene.
Clear regulations
Valve materials and the products manufactured form them are tested in regard to the migration of chemical substances and the growth or microorganisms. Beginning on 01/12/2013 the threshold for lead in the scope of the drinking water directive Chemical requirements (§6 Chemische Anforderungen) will be established at 10 µg/l to reduce health risks. With our high-quality valves from CUPHIN® we offer safety and hygiene in drinking water installations already today.
CUPHIN® - Chemical composition
Cu
Si
P
Zn
(Nominal, mass percentage)
76 %
3 %
0,05 %
Remainder
CUPHIN® - Physical properties
Density
Electrical conductivity
Thermal conductivity
E-Module
(reference values)
8,3 g/cm3
4,5 MS/m
ca. 35 W/mK
100 GPa
Extraordinary mechanical properties
Rm tensile strength
Rp 0,2 %-proof stress
A5 breaking elongation
HB hardness
700 MPa
480 MPa
20 %
180 Brinell
(reference values apply to semi-finished material of approx. 20 mm diameter)
The material CUPHIN® which we use for our valves is distinguished by good mechanical properties. This is otherwise known only from a few steel grades.
More information at www.brass-circle.de
Corrosion resistance
Stress corrosion cracking resistant (SCCR) and dezincing resistant (DZR) at the same time: Hardly any other material in drinking water installations has such combined properties as CUPHIN®.
The requirements of DIN 50930-6 in regard to the alloy composition will be met without problems even beyond 2013.
Conclusion: Bruse has developed procedures and methods to offer you contemporary valves made from CUPHIN®.