Grease Trap Size Calculator
Answer a few questions about your commercial kitchen to find the correctly rated grease separator under EN 1825.
About Your Kitchen
Peak Flow Rate
—
litres / second
Minimum NS Rating
—
nominal size (EN 1825)
GRAF Recommended Size
—
nearest Graf product
Standard
EN 1825
certified
Recommended Products
Multiple options shown above — a higher sludge capacity means less frequent emptying and lower long-term maintenance costs. Browse the full range →
Very small or single-unit installations?
For food vans, mobile kitchens or a single sink connection, the Polylok 70L Easy Clean passive grease trap may be a simpler and more cost-effective option at €344 exc. VAT.
View Polylok 70L →
Important: This calculator is based on EN 1825 and is intended as a guide only. Results are not valid for wastewater containing greases with a density above 0.94 g/cm³, or for special situations such as hospital operating theatres. A qualified engineer should verify the final specification. Graf separators are designed to EN 1825 standards.
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