LESER Clean Service Safety Valve Type 485
LESER Clean Service Safety Valve Type 485

Clean Service

Type 485

Safety valve with small to medium capacities and a low dead space ratio through weldable, integrated pipework connection


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

  • LESER CE Approvel
  • LESER ASME Approvel
  • LESER EAC Approvel
  • LESER Chinese TS Approvel

Technical specifications 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 250 °C | -49 to 482 °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 Sec. VIII Div. 1, 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
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