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product page - LESER type 485 clean service


TYPE 485

LESER type 485 clean service
LESER type 485 clean service



Type 485 LESER Clean Service pressure relief valves are designed, marked, produced and approved according to the requirements of the following regulations:

ce-mark logo


asme-uv logo
EAC logo

Technical Specifications for Type 485

Nominal Diameter at Inlet

DN 25 - DN 40 | 1'' - 2''


D - F

Actual Orifice Diameter d₀

13 - 25 mm | 0.512 - 0.984 in

Actual Orifice Area A₀

133 - 491 mm² | 0.206 - 0.761 in²


0.1 - 16 bar | 1.5 - 232 psig

Temperature (in accordance with DIN EN)

-45 to 150 °C | -49 to 302 °F

Body Material

1.4435 (BN2) | SA 479 316L

Valve Connection

Inlet: Integrated pipework connection type 5034 for welding into the pipe with welded connection acc. to ISO 2037, DIN 11850 oder DIN EN ISO 1127 Outlet: Clamps acc. to ASME BPE /DIN 32676, ISO 2852 or DIN EN ISO 1127, Aseptic clamp acc. to DIN 11864 T1 Series A or B (with nut) or DIN 11851, Neumo Sterile aseptic thread (with nut), Welded end connection acc. to DIN 11850, Flange acc. to DIN 11864 T2 Series A or B or Aseptic or Nut flange, Smooth flange

Bellows Material (optional)


Load Type

Spring loaded


PED/ DIN EN ISO 4126-1, PED/ AD 2000-Merkblatt A2, ASME Section XIII certified for Section VIII Div. 1 service, CRN, AQSIQ, EAC


HyTight Assembly Designed and manufactured acc. to: DIN 11866, ASME BPE, EN 1672-2, DIN ISO 14159, USP class VI and FDA 21 CFR



In our comprehensive download area you will find all necessary documents and detailed information on safety valves you need.

LESER clean service product brochure
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