Discs & Cores

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Disc and core spray nozzles consist of two parts that work together to create a specific hollow-cone or full-cone spray pattern. The core gives the fluid a swirling motion before it exits the disc's orifice, where the final spray pattern is formed.

Materials

The choice of material for both the disc and core affects their durability, corrosion resistance, and price. For optimal performance, the disc and core must be made of the same material.

Material	Characteristics	Durability	Application
Ceramic	Hard, rigid, and brittle.	Most durable, highly resistant to abrasive chemicals.	High-pressure applications, spraying abrasive or dry chemicals like wettable powders.
Hardened stainless steel	Durable, tough, and corrosion-resistant.	Very high durability, second only to ceramic.	Spraying corrosive or abrasive materials.
Stainless steel	Good corrosion and wear resistance.	High durability.	Applications where cost is a factor but brass or plastic isn't durable enough.
Polymer (nylon/plastic)	Chemical-resistant and low-cost.	Low durability, susceptible to wear from abrasive materials.	Applications where chemical resistance is more important than abrasive wear resistance.
Brass	Economical and relatively soft.	Lowest durability, wears quickly with abrasive liquids.	Limited, low-pressure, and low-volume applications.

How to select the right disc and core

To choose the correct disc and core, you need to consider several factors based on your specific application and spraying equipment.

Determine flow rate and application rate: Use a nozzle chart from the manufacturer to find the specific disc and core combination that will produce the required gallons-per-minute (GPM) at your desired operating pressure.
Consider operating pressure: Higher pressure with a specific disc/core combination will generally create smaller droplets, which are more prone to drift.
Choose the right material: The material should be selected based on the chemicals you are spraying. Abrasive or corrosive liquids require durable materials like ceramic or hardened stainless steel.

Discs


Ceramic	Hardened stainless Steel	Stainless Steel	Nylon
Click to download Specifications	Click to download Specifications	Click to download Specifications	Click to download Specifications

Cores


Ceramic	Stainless Steel	Nylon	Brass
Click to download Specifications	Click to download Specifications	Click to download Specifications	Click to download Specifications