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Why you’ll love it

RestaurantSupply.com is your trusted source for Watts grease interceptors.

  • Authorized Watts dealer, ensuring genuine commercial restaurant equipment and manufacturer support
  • Fast shipping available on in-stock Watts WD-50-L grease interceptors
  • Competitive pricing backed by a 30-day price match guarantee
Additional Question? Ask an Expert

Watts WD-50-L Grease Interceptor 50 GPM Capacity Low Profile

Watts  |  MFG #: WD-50-L  |  Item #: 32721
Item: #32721

Technical details
Manufacturer Dormont Manufacturing
Model Number WD-50-L
Manufacturer Part # WD-50-L
Draw-off Without
Flow Rate 50 GPM
Weight 246.92 lbs

About this item

Product Details

The Watts WD-50-L Watts Grease Interceptor is a commercial-grade waste management solution designed for high-demand foodservice environments. Engineered with epoxy-coated steel and a solid steel cover with gasket, it features a low profile design for space-constrained installations while maintaining a robust 50 gallons per minute flow rate and a 100 lb grease capacity. Its 4-inch inlet and outlet ports facilitate straightforward plumbing connections, and the removable baffle assembly simplifies maintenance. The deep seal trap with cleanout and external cast iron flow control fitting ensure reliable operation in demanding commercial kitchens, such as restaurants and institutional kitchens, providing efficient separation of grease from wastewater with precise technical performance.

Top Watts WD-50-L Features

The Watts WD-50-L grease interceptor offers high-flow performance with a 50 GPM capacity, ensuring effective grease separation in moderate-volume kitchens. Its epoxy-coated steel construction provides durability against chemical exposure, while the removable baffle simplifies servicing. Designed for seamless integration into existing plumbing, it supports space-efficient installations in compact commercial foodservice setups, reducing downtime and maintenance complexity.

  • High flow rate: 50 gallons per minute for efficient waste handling
  • Durable construction: epoxy-coated steel withstands corrosive environments
  • Easy maintenance: removable baffle assembly simplifies cleaning
  • Space-efficient design: low profile minimizes installation footprint
  • Robust plumbing compatibility: 4-inch inlet & outlet for standard connections

Ideal for restaurant kitchens requiring reliable grease separation with moderate throughput.

Watts WD-50-L Technical Specs

The Watts WD-50-L grease interceptor is constructed from epoxy-coated steel, weighing approximately 247 lbs, and features a model number WD-50-L with a maximum flow capacity of 50 GPM. Its deep seal trap with cleanout enhances sanitation, while the external cast iron flow control fitting ensures consistent operation. The unit operates passively without electrical requirements, relying solely on gravity-based flow. Its dimensions allow for installation in confined spaces, supporting maintenance workflows with accessible cleanout points. The unit is designed to handle continuous grease separation demands in medium-volume commercial kitchens, with a maximum operating temperature compatible with typical wastewater temperatures.

  • Flow Rate: 50 GPM for consistent grease separation
  • Weight: 246.92 lbs, durable steel build
  • Material: epoxy-coated steel for corrosion resistance
  • Dimensions: To be verified for specific installation requirements
  • Temperature Tolerance: Compatible with standard wastewater temperatures
  • Installation Compatibility: 4-inch inlet & outlet with no hub connections

What is a commercial grease interceptor?

A commercial grease interceptor is a specialized plumbing device designed to separate and capture fats, oils, and grease from wastewater in foodservice establishments. The Watts WD-50-L is a high-capacity, gravity-fed unit optimized for medium-volume kitchens, such as restaurants and cafeterias, where space-efficient, reliable grease management is critical. Installed within the drainage system, it supports sanitation standards and prevents grease buildup in downstream plumbing, ensuring smooth kitchen operations and compliance with local regulations.

Top grease interceptors for moderate-volume foodservice settings

Manufactured by Watts, the WD-50-L offers durable, space-efficient grease separation suitable for moderate throughput commercial kitchens. Its robust epoxy-coated steel construction, combined with precise flow control, ensures reliable operation in restaurant environments and institutional foodservice applications. Designed for operation in confined spaces, it supports continuous waste management with minimal maintenance required.

  • Operation Type — moderate-volume restaurant kitchens
  • Kitchen Setting — compact commercial foodservice spaces
  • Foodservice Category — restaurant and institutional kitchens
  • Workload Qualifier — typical throughput with high reliability
  • Use Case — effective grease separation in moderate-demand environments

Why Choose Watts WD-50-L?

Compared to similar models, the Watts WD-50-L stands out with its epoxy-coated steel construction, solid low-profile design, and simplified maintenance features. It offers seamless plumbing integration, ensures durable corrosion resistance, and supports space-constrained installations, making it an optimal choice for restaurant operators seeking efficient grease management with reliable long-term performance.

  • Compact footprint: space-saving low profile design
  • Robust materials: epoxy-coated steel resists corrosion and chemicals
  • No hub connections: straightforward plumbing integration
  • Removable baffle: simplifies routine cleaning and inspection
  • High flow capacity: 50 GPM supports medium-volume kitchens

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Dormont Manufacturing

Watts WD-50-L Grease Interceptor 50 GPM Capacity Low Profile

$2,398.68 $5,183.42

Dormont Manufacturing, WD-50-L, Watts Grease Interceptor, low profile, 50 gallons per minute flow rate, 100 lb grease capacity, 4" inlet & outlet, no hub connections, solid steel cover with gasket, hex head center bolt(s), removable baffle assembly, deep seal trap with cleanout, external cast iron flow control fitting, epoxy coated steel, PDI certified