• Safety valve

    Safety valve

    Be sure

    Our safety valves protect your system and the hygienic processing of your products.

Safety valve

For smooth processes and protection against overpressure

Reliably safe processes - this is what our KIESELMANN safety valves with EAC certification and CE type approval for gases stand for. They protect automatically, without additional auxiliary power, as soon as the system pressure has exceeded the adjusted system pressure and close reliably and quickly when the safe operating pressure is reached again.

With safety valves from our company you ensure trouble-free operation and avoid damage due to overpressure. The ideal protection for all connected system parts, containers, pipelines and your employees.

Safety first

KIESELMANN safety valves open automatically as soon as the pressure has exceeded a previously defined value. The closing is then effected by the force of a spring or weight. They are used in systems where liquids and gases are present. The response pressure is set at the factory precisely according to your requirements and is sealed to protect against unwanted changes. We will be happy to help you with the design of the appropriate safety valve.

Against overpressure, for the highest hygiene requirements. KIESELMANN safety valves feature a compact and closed housing construction. All moving parts are inside the housing, so no functional parts can be blocked from the outside. This also allows adequate cleaning of the exterior surfaces. The spherical inner contour with the hygienically designed clamping connections provides excellent CIP (cleaning-in-place) and SIP (sterilisation-in-place) properties. And we also thought: the valve insert can be removed from the housing for maintenance purposes without changing the pressure setting.

We like to be measured by our success: Our safety valves have been used successfully for many years in numerous processes in the food and pharmaceutical industries. 

• Low-maintenance construction

• Precise opening and closing

• For liquids and gases

• Closed housing, no moving parts outside

• Removable valve insert


- heatable (liquids)
- Proximity indicators (liquids)
- Cleaning hood (gases)
- Water seal (gases)

For CIP cleaning:
- pneumatically liftable
- Hand lever for manual lifting 



  • Safety valve K/M-G 6357xxxx123
  • Safety valve K/M-G 6357xxx423
  • Safety valve K/M-G 6357xxx323
  • Spring safety valve G 6146
  • Spring safety valve K/M 6147
  • Spring safety valve G 6148
  • Spring safety valve K/M 6149
  • Spring safety valve G 6150
  • Spring safety valve K/M 6151
  • Cleaning device 6244

Technical data


Liquids gases

DN 25-100 DN 20


Liquids gases



in product contact

1.4301 / AISI 304 1.4404 / AISI 316L


Liquids gases

Cone nut DIN 11851 G 1 Cone nut DIN 11851 other connections on request


Liquids Liquids Gases

heatable sensor inductive cleaning hood manual or pneumatic liftable

Operating temperature:

Liquids CIP / SIP capable gases

max. 90°C to 140°C max. 130°C

Response pressure

Liquids gases

0.2-12 bar, depending on nominal diameter 0.1-10 bar