Series 451bHF

Safety valves with bellows made of stainless steel, angle type with threaded connections

Good to know Data & Facts

Valve size

DN 15 to DN 50
1/2" to 2"

Pressure

0.5 bar to 25 bar

Temperature

-40 °C to 120 °C
Product design

angle-type

Material

Stainless steel

Nominal width

DN 15 to DN 50
1/2" to 2"

Medium
  • Hot water
  • Potable water
Temperature in °C

-40 °C to 120 °C

Pressure in bar

0.5 bar to 25 bar

Our safety valves, characterised by their high corrosion resistance and equipped with a stainless steel bellows and a metallic supported Elastomere seal, meet the highest demands in industry and building technology. These D/G/H and F approved valves are specially designed for the effective protection of heating and cooling systems, especially for indirect heating or cooling through heat exchangers. Their universal applicability makes them an ideal solution for a wide range of applications.

Compliance with Swiss SWKI requirements underlines the quality and reliability of our safety valves, which have been specially developed for demanding environments where high corrosion resistance is essential. Their design and material composition guarantee long-term performance and safety for heating and cooling systems in industrial and Building technology applications.

connection types
  • Internal pipe thread
  • Male thread
  • CHP units (combined heat and power plants)
  • Cooling and refrigeration
  • Cooling and/or heating circuits as well as heat exchangers of combined heat and power plants (CHP)
  • Cooling systems and closed cooling circuits

  • closed, thermostatically protected water heating systems with flow temperatures up to 120°C for all static heights or nominal outputs above 350 kW

Safety valves are permanently set and sealed at the factory.

TUV-Germany

Approvals

TÜV.SV.17 665:

Usage

Heating (H)

TUV-Germany

Approvals

TÜV.SV.21 684:

Usage

Liquids (L)

EU type examination

Approvals

01 202 642/B-18 T023 Rev.2:

Usage

Steam/Gases (S/G)

Eurasian Conformity

Approvals

EAЭC N RU Д-DE.CП28.B.08409/20:

EAЭC N RU Д-DE.CП28.B.00821/20:

Usage

Steam/Gases (S/G)

Heating (H)

Manufacture License of Special Equipment People's Republic of China

Approvals

TSF700E45-2023:

Usage

Liquids (L)

Det Norske Veritas

Approvals

TAP00001W7:

Usage

Liquids (L)

Lloyd's Register

Approvals

LR2089493TA:

Usage

Liquids (L)

Steam/Gases (S/G)

American Bureau of Shipping

Approvals

17-HG1633821-PDA:

Usage

Liquids (L)

Steam/Gases (S/G)

Bureau Veritas

Approvals

26401/C0 BV:

Usage

Liquids (L)

Steam/Gases (S/G)

Russian Maritime Register of Shipping

Approvals

19.40075.250:

Usage

Liquids (L)

Steam/Gases (S/G)

Documents

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