Kettles & Cookers

Standard lead times range from 10 to 18 weeks depending on vessel capacity, jacket configuration, agitation complexity, and the depth of controls integration. A mid-range steam jacketed kettle with a single-speed agitator and basic PLC controls falls toward the shorter end. Large-capacity ASME code-stamped vessels with dual-zone jackets, VFD-driven counter-rotating agitators, and full SCADA recipe management require additional engineering, fabrication, and factory-acceptance testing time. For clients engaged in a complete DPS Design-Build-Manage facility project, kettle delivery is sequenced against the master construction schedule so installation occurs precisely when the mechanical and utility rough-in is ready to receive the vessel — avoiding costly site storage and schedule gaps.

Every DPS kettle begins with your product’s thermal requirements and your production targets. Our process engineers calculate jacket surface area and steam demand based on your product’s specific heat, target temperature rise, hold time, and cool-down rate, then size the vessel’s working volume to your batch weight — accounting for headspace required for boiling, foaming, or agitation splash. The result is a kettle precisely matched to your scheduled process and your line speed, avoiding both the overcapitalization of an oversized vessel and the throughput penalty of a kettle that cannot keep pace with downstream filling.

DPS process engineers design the kettle’s steam inlet, condensate return, and trap station as part of the facility’s overall utility distribution — not as a standalone hookup. Jacket steam demand is calculated against the plant boiler’s total capacity and delivery pressure, ensuring adequate supply even when multiple kettles or other steam loads operate concurrently. Condensate return piping, process water supply for jacket cooling, and CIP connections are all detailed on the facility P&ID and coordinated through the mechanical installation scope, whether executed by the DPS national contractor network or by the client’s preferred mechanical contractor.

Yes. Every DPS cooking kettle is designed for compliance with FDA 21 CFR Part 117, USDA FSIS requirements for inspected facilities, and the sanitary design principles of 3-A Sanitary Standards. Product-contact surfaces are finished to ≤32 Ra µin or better, all interior welds are ground and polished, and the vessel geometry is fully drainable with no horizontal ledges or dead legs that harbor product or cleaning solution. Instrumentation ports for temperature, pressure, and level are positioned to support HACCP and HARPC critical control point monitoring, and the automation platform generates electronic batch records that satisfy SQF, BRC, and retailer-specific audit documentation requirements.

Routine maintenance includes periodic inspection of jacket integrity and steam trap function, agitator seal and bearing inspection per the intervals defined in the O&M manual, calibration of temperature and pressure instruments on the schedule required by your food safety plan, and verification of CIP spray device coverage. DPS delivers a complete documentation package with every vessel — including a recommended spare parts list, preventive maintenance schedule, and troubleshooting procedures. For clients under ongoing DPS service agreements, kettle maintenance integrates into the facility-wide preventive maintenance program, keeping vessels audit-ready and operating at designed thermal performance year over year.