Leser Safety valves for food, beverage and pharmaceutical applications

Short and uniform delivery times for Clean Service safety valves: Get 155 top runner variants in two 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

Industries

• Pharmaceutical 
• Food and Beverage 

Approvals

LESER Clean Service safety 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

Products range:

• Type 481 - Cap H2 - Inlet-Clamp connection - Outlet- Threaded connection
• Type 481 - Packed knob H4 - Inlet - Aseptic clamp and nut - Outlet- Threaded connection
• Type 483 - Packed knob H4 - Inlet and outlet - Flange connection
• Type 483 - Pneumatic- lifting device H8 - Inlet and outlet - Clamp connection
• Type 484 - Cap H2-Inlet-Vessel connection Type 5034 - Outlet- Welded end connection
• Type 484 - Packed knob H4 - Inlet- Vessel connection Type 5034 - Outlet- Welded end connection
• Type 485 - Cap H2- Inlet-Integrated pipework connection Type 5034 – Outlet- Welded end connection
• Type 485-Pneumatic lifting device H8-Inlet- Integrated pipework-connection Type 5034-Outlet- Flange connection
• Type 488 - Cap H2 - Inlet and outlet - Clamp connection
• Type 488-Packed knob H4-Inlet and outlet-Flange connection