Clean Service
LESER Clean Service Safety valve

Pressure relief valves for food, beverage and pharmaceutical applications

Short and uniform delivery times for Clean Service safety valves: Get 155 top runner variants in three weeks. These top runners cover 90% of the supplied Clean Service valves.

  • Better cleaning through:

    • Low dead space ratio L/D from up to < 0.33
    • HyTight Assembly: gap-free design of the internal parts
    • Surfaces packages according to ASME BPE and DIN 11866 with a high surface quality up to Ra max = 0.375 µm / 15 µinch
  • Easy process integration through cleaning (CIP) or sterilizing (SIP) with pneumatic lifting device possible
  • Worldwide approvals, FDA-compliant elastomers and a wide range of aseptic connections
  • Alternative to bursting disc

Approvals

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

Valve Types

Type 481

Small capacity at high set pressure

DN15 - DN25 (3/4" - 1")

Type 483

Small to medium capacity, best cleanability and a variety of aseptic connections

DN 25 - DN 40 (1" - 2")

Type 488

High capacity, variety of aseptic connections

DN 25 - DN 100 (1" - 4")

Type 485

Small to medium capacity, low dead space ratio through weldable integrated pipework connection

Type 484

Small to medium capacity, low dead space ratio through weldable vessel connection

Technical data Clean Service

Nominal Diameter at Inlet
DN 15 - DN 100 | NPS 3/4'' - NPS 4''
Actual Orifice Diameter d₀
10 mm - 92 mm | 0.394 in - 3.622 in
Actual Orifice Area A₀
78.5 mm² - 6648 mm² | 0.122 in² - 10.304 in²
Pressure
0.1 bar - 68 bar | 1.5 psig - 986 psig
Temperature (in accordance with DIN EN)
-45 °C to 250 °C | -49 °F to 482 °F
Body Material
1.4404, 1.4435 (BN2) | SA 479 316L
Valve Connection
Large Selection of Aseptic Connections: Threaded, Flanged, Clamped, Welded
Bellows Material (optional)
EPDM
Load Type
Spring-loaded

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