Here you will find answers to the questions we are frequently asked. If your question is not included, simply send us an email or give us a call.
Butterfly Valve 
DVGW Butterfly Valve 
PTFE Butterfly Valve 
3-Way Ball Valve 
Pneumatic Ball Valve 
Check Valve 
Disc Check Valve 
Knife Gate Valve 
Strainer 
Shut-Off Valves - Globe Valve 
Compensator 
Check Valves 
GESTRA Steam trap DVGW Butterfly Valve
DVGW certification is mandatory for gas and drinking water pipes. It ensures that the fitting complies with regulations in terms of both technology and hygiene.
Yes. According to the Drinking Water Ordinance (TrinkwV), all products that come into contact with drinking water must comply with generally accepted technical standards. DVGW certification is proof of this. Without it, you not only risk public health, but also recourse claims.
EPDM is the standard here. It has been tested, is hygienically safe and durable.
For many industrial applications, yes – but not permitted for gas and drinking water. Certification is mandatory in these cases.