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Spec Engineering

The Industry Leader in Custom Process Solutions.



Since 1979, Spec Engineering, a Gray company, has been a single source for system design and process equipment integration. We specialize in processing systems from raw materials through packaging—with a focus on delivering increased efficiency—and serve the following sectors:


– Food & Beverage – Minerals & Concrete
– Bakery & Confections – Nutraceuticals/Nutritionals
– Pet Food – Coatings
– Specialty Chemical – Metal Powders
– Plastics


What We Do

Custom Solutions for All Your System Needs.

With decades of experience, Spec Engineering works with customers to meet demands in bulk processing and material handling by providing design solutions such as storing, feeding, conveying, mixing, blending, batching, controls, and automation that are tailored to meet our customers’ needs across a wide range of market sectors and segments.

Explore Spec Engineering, A Gray Company



Spec Engineering offers custom process solutions in seven primary areas. Whether you’re improving a single system or making facility-wide updates, our comprehensive offerings are customized to cover your unique needs.


 – Design and front-end engineering  – Dying & evaporating
 – Process optimization  – Mixing & blending
 – Packaging & process design  – Conveying & transfer
 – CIP system design  – Feeding & batching
 – Weighing & scaling
MODULAR  – Liquid dosing
 – Complete modular process skid systems  – Liquid filtering
 – CIP skid systems  – Liquid dissolving
 – Evaporation & heat transfer
AUTOMATION  – Filling & packaging
 – UL panel shop  – Dust collection & explosion protection
 – PLC, DCS, HMI  – Storage silos & tank farms
 – Control system programming
 – Panel design & engineering FABRICATION & INSTALLATION 
 – Legacy integration  – Installation & commissioning
 – Technical field work
ANALYTICS  – Custom fabrication
 – Dust hazard analysis
 – Material testing  – Tolling/contract packaging
 – Particle size distribution


"[Your] extremely talented group of professionals have proven the powerful statement that Spec delivers practical design solutions that cater to customers' unique needs."
Matthew Bean, Director of Engineer & Technology

Major Pool Chemical Manufacturer

Get in Touch.

Call us at 815.676.5006 or send us a message using this contact form.