Eductor Nozzles for Tank Mixing & Liquid Agitation

The Eductor Nozzles collection is commonly used for Cleaning & Washing, Fire Protection & Safety, and Foam Control & Suppression.

Start with the required process result, then define flow rate, operating pressure, coverage target, material compatibility, and maintenance needs.

The best eductor spray pattern depends on the geometry you need to cover, the spray impact required, and the pressure available at the nozzle.

Common material options may include polypropylene and 316L stainless steel. Always match materials to fluid chemistry, temperature, and wear conditions.

Common options vary by series, but many selections compare sizes such as 1/4 in., 3/8 in., 1/2 in., and 3/4 in. where available.

Flow rate and pressure control coverage, droplet size, impact, and chemical or water usage, so they should be defined before choosing a series.

Common applications include Cleaning & Washing, Fire Protection & Safety, and Foam Control & Suppression.

Eductor Nozzles are frequently selected in Automotive, Chemical Processing, Food & Beverage, and Manufacturing & Assembly.

Choose the correct material and orifice design for the fluid, verify filtration where needed, and set a maintenance routine based on actual service conditions.

Reach out when you need help balancing process performance, pressure, chemistry, maintenance access, or multiple candidate series.

316L stainless steel eductor nozzles are the right choice for high-temperature service (up to ~400°F continuous), abrasive slurries, oxidizing acids, and any duty where mechanical impingement could erode plastic. Polypropylene eductor nozzles are preferred for cold-to-ambient corrosive chemistries, concentrated hydrochloric acid, sodium hypochlorite, ferric chloride, plating-bath chemistries, and most electroplating rinse tanks, where 316L would corrode but PP is fully compatible. NozzlePro stocks both materials in matched 1/4", 3/8", 1/2", and 3/4" NPT inlet sizes; switching between them is a direct swap with no piping change.

Size to total tank turnover, not just nozzle flow rate. Each eductor delivers approximately 5x its motive flow as total recirculated volume, so a single 1/2" eductor at 10 GPM motive flow moves about 50 GPM through the tank. Target one full tank turnover every 5-15 minutes for general agitation, every 60-90 seconds for plating uniformity. For tanks larger than ~500 gallons, use a multi-nozzle eductor configuration, typically one nozzle per 100-250 gallons, mounted at the tank floor and aimed at a 30-45° upward angle to create a rolling circulation pattern.

Multi-nozzle eductor systems are required whenever a single eductor can't reach end-to-end across the tank, generally tanks longer than ~6 feet, deeper than ~5 feet, or non-rectangular (annular, oval, or compartmentalized). They're also preferred when you need to maintain even agitation during partial tank fills, or when sediment concentrates in dead zones a single nozzle can't reach. Annular multi-nozzle eductor arrays are common in metal-finishing lines and chemical processing tanks where uniform suspension of solids is critical.