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Spray Devices

The traditional ball spray has been in use for more than 40 years as the most commonly applied and only 3-A compliant spray device for dairy, food, brewing and wine production processes.  It has been used in the pharmaceutical and biotech industries for more than 20 years, in processes handling liquid and dry granular materials. The standard ESB-# consists of a flattened 2-1/2" spherical spray head welded to a slip joint and affixed to a 1-1/2" diameter straight supply tube 18" in length. The spray and supply tube are inserted in a 3" clamp type nozzle. Standard drillings are for 20, 30 and 40 Gpm at 25 Psi in a 120 degree upwards conical pattern. 

Options include:

• Supply tubes with elbows (as illustrated) 
• Spray heads welded to supply tubes (for straight tubes only, to meet inspectability criteria)
• Bottom or full coverage to maximum delivery of 80 Gpm
• Smaller 1-7/8" heads for installation in 2" clamp nozzles, drilled 10, 15 and 20 Gpm at 35 Psi

These unique sprays consist of a length of 1-1/2" tube containing die-formed, radiused pullouts to which 1-1/2" half-sphere custom drilled spray heads are welded, being located as required to spray in multiple directions. 

Widely used configurations include the Straight Tube Spray fitted with a 2-1/2" clamp installation fitting, and the Bent Tube Spray which is fitted with a 3" installation fitting.  Both types of sprays are custom fabricated to order.  Individual spray heads are normally drilled in the range of 5-10 Gpm and may be "Directionally Drilled" to effectively apply a  minimum amount of flush, wash and rinse solution to a specific area. The normal delivery per Spray Tube ranges from 25-40 Gpm.

Options include:

• Tube may originate at a pullout on the bottom of a 2-1/2" ball type spray
• Half-sphere spray heads may be added to supply tubes for ball-type sprays to handle specific coverage problems

Bubble Sprays

These sprays are fabricated by directionally drilling the same half-sphere described above, and then welding it to either a elbow or straight supply tube with a 1-1/2" clamp installation fitting.  Field application is by insertion through a special 1-1/2" clamp adapter welded into the wall of the equipment to be cleaned. Bubble sprays are used most widely used to apply CIP flush, wash and rinse solutions to a diverse assortment of dry granular material processing equipment, and the associated ductwork, but may be applied in a similar manner for some liquids processing systems.  Spray flow rates are generally in the range of 5-10 Gpm at 25 Psi, via custom drilled patterns which require the elbow supply tube for proper positioning. 

Unique Material and Design Characteristics of all ESC Spray Devices -  All Spray Devices described above and shown again at the right, and many other special derivations, are designed and fabricated to common criteria which include:

• Material:  Type 304 or 316 stainless steel, or other, including hastelloy
• Spray Orifices: Generally drilled 1/16" or 5/64", to meet flow and coverage requirements. All orifices are chamfered inside and outside
• Physical Characteristics:  All sprays are designed to be easily removable for field removal of non-soluble debris, and are otherwise self-cleaning, self-draining, and polished to a #4 finish or better, as required.  Electropolishing is an available option.

Created & Maintained by  Dale A. Seiberling
Electrol Specialties