Model L11F

Weight Loaded Pressure Relief Valve

LaMot Valve & Arrestor Model L11F is designed for emergency relief capacity above that supplied by a standard operating valve used on tanks, piping, and low-pressure vessels. Pressure relief valves provide relief from excessive internal pressure which may cause tank damage. Calibrated weights are available for various setting.


Superior Sealing Performance

  • Precision machining and manufacturing to accomplish superior sealing
  • Ultra-tight sealing reduces product leakage and fugitive emissions Industry Leading Flow Rates
  • Higher flow capacity to protect from excessive pressure build up
  • Optimal flow is achieved by a flow path with minimal obstructions from the tank nozzle to the atmosphere
  • Higher flow rates enable a wide range of applications
  • 100% overpressure technology

Direct Replacement & Easy Maintenance

  • Direct replacement for any standard 150# ASME pressure relief valve
  • Designed for easy maintenance, thus reducing downtime and lowering operational costs
  • Fully field replaceable pallet assemblies
  • Replacement pressure diaphragms “soft goods”
  • Calibrated weight system allows for field adjustable settings

Technical Details
• Size: 2” (50mm) through 10” (250mm)
• Body Material: Aluminum (non-sparking), Carbon Steel, Stainless Steel
• Pallet Material: Polyphenylene Sulfide (PPS)
• Calibrated Weight Material: Zinc-Plated Steel, Stainless Steel
• Bolting Class: 150# ASME
• Pressure Settings: 0.5 osig to 24 osig (0.5 osig increments)
• Weight loaded Pressure Relief Valve design
• 100% overpressure technology
• Leak Rate is compliant with API 2000
• Pressure Diaphragm: BUNA-N, FEP, or Blue FKM
• Pipe-Away, Pressures up to 24 osig

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