Type test approved flange safety valves
Series 455

Rueckruf EN

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Safety valves made of stainless steel,
angle-type with flange connections

The series of flanged safety valve 455 captivates with its consistent concept of capacity, function and design. The high capacity of the entire series from DN 15 up to DN 100 is unique in the sector of flanged safety valves. By using exclusively high-quality materials with outstanding media resistance and the option to secure the tightness towards the atmosphere on a high level with a backpressure compensating bellows, this safety valve is suitable for nearly all applications. The pressure range extends from 0.2 to 40 bar and also extremely high temperatures can be applied up to a limit of 400 °C. The valves are available with flanges, according to DIN EN 1092-1 PN 40 on the inlet side and PN 16 on the outlet side and optionally with a lifting lever and a proximity switch for the display of the valve opening.

  • Examples of use
  • Approvals
  • Downloads

For the protection of:

Full-lift safety valve for the protection of:

  • pressure tanks and -systems for neutral / non-neutral vapours and gases
  • Steam plants

Normal safety valve for the protection of:

  • pressure tanks and -systems for neutral / non-neutral liquids

Please observe plant-specific regulations and use of appropriate valve version and sealing material.

  • Chemical and petrochemical plants
  • biogas plants
  • industrial- and commercial boiler plants
  • Production and processing of industrial gases
  • shipbuilding industry and marine equipment
  • secondary areas in the food-, beverage-, pharmaceutical- and cosmetics industries

Safety valves are set and sealed at the factory.

TÜV-Type test approval 2094
D/G (full-lift), F (normal)

EU type examination
S/G , L

TR ZU 032/2013 - TR ZU 010/2011
D/G (S/G) , F (L)



PED 2014/68/EU
DIN EN ISO 4126-1
AD 2000 Data sheet A2
VdTÜV Guideline SV 100
TRD 421 and DIN EN 12952-7
DIN EN 12953-8


Classification society

Bureau Veritas

American Bureau of Shipping

Registro Italiano Navale

Suitable for
Liquidsneutral and non-neutral
Air, gases and vapoursneutral and non-neutral
Stainless steel

DN 15 to DN 100 
-60°C to + 400°C
(depending on version)
0,2 - 40 bar 
Data sheet/Capacity table