Model L13S

Weight Loaded Vacuum Relief Valve

The LaMOT Valve & Arrestor Model L13S weight loaded vacuum relief valve (side mount) is used when vacuum relief is the only requirement. The L13S is designed for side mounting directly to the tank body or for installation via piping. A weight-loaded pallet ensures proper intake relief under operating conditions. This feature reduces the possibility of tank damage due to an excessive vacuum condition. Valve size must be selected to perform required vacuum relief under operating and thermal conditions.

  • Product leakage and fugitive emissions are reduced via ultra-tight sealing
  • Higher flow capacity to protect from excessive vacuum build up
  • Peripheral and central seat guides ensure reliable, repeatable performance
  • Designed for easy maintenance, thus reducing downtime and operational cost

Technical Details

  • Size Range: 2” — 6” (50 mm — 150 mm)
  • Body Material: Aluminum, Carbon Steel, Stainless Steel
  • Pallet Material: Polyphenylene Sulfide (PPS)
  • Diaphragm Material: Buna-N, Blue FKM or FEP
  • Weight Material: Zinc-Plated Carbon Steel, Stainless Steel
  • Bolting Class: 150# ASME
  • Available Vacuum Settings: 0.50 osig — 24 osig (in 0.5 osig increments)
  • Superior tightness, meeting API-2000 leak requirements

Let's Get Started

We don’t manufacture until you order. Our production team employs the latest tools and techniques in agile manufacturing to fabricate your order to your specifications. After production and assembly, each product undergoes stringent quality inspections before leaving the production floor – we guarantee you’ll get exactly what you ordered.

Find a Rep