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Grease Trap Sizing Calculator helps contractors and tradespeople accurately size, spec, and estimate materials and systems.

Fórmula

Trap Size (GPM) = Flow Rate from Fixtures / Retention Time

Guia passo a passo

  1. 1Count fixture units connected, calculate peak flow rate
  2. 2Apply the formula using your project measurements
  3. 3Add required safety factors or waste allowances per code

Exemplos resolvidos

Entrada
3 sinks at 2 GPM each, 2-minute retention
Resultado
Trap = 6 GPM flow → use 10 GPM trap

Erros comuns a evitar

  • Not applying code-required safety factors or derating
  • Forgetting to account for waste and cut losses in material estimates

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