Overview Of Marley Cooling Tower Spray Nozzles​

Here’s a helpful overview of Marley cooling tower spray nozzles—types, features, materials, pressures, and compatibility.

Marley Cooling Tower Spray Nozzles – Overview

Marley (SPX Cooling Technologies) uses a variety of spray nozzles across their crossflow and counterflow cooling tower models. The nozzle design is critical because it distributes hot water evenly over the fill to ensure proper thermal performance.

 ✅ 1. Common Marley Cooling Tower Spray Types

A. Marley Spiral Target Cooling Tower Spray (ST Nozzle)

Used in crossflow cooling towers (e.g., Marley NC, Marley QuadraFlow).

Features:

* ABS or polypropylene construction

* Pressure gravity-fed (nozzle works without pressure, very low head)

* Water hits a *target plate* creating a uniform umbrella pattern

* Comes in various orifice sizes to match flow rates

* Common sizes: 0.75", 1", 1.5", 2"

Typical flow rate:

* 1" nozzle → ~2–7 GPM depending on head

* 2" nozzle → up to ~30+ GPM

B. Marley Counterflow Cooling Tower Spray (XCD, XS, NS, HP Nozzles)

Used in counterflow cooling towers (e.g., Marley MD, Marley 600).

Types include:

* XCD nozzle – high efficiency with low pressure

* XS nozzle – splash-type nozzle

* HP nozzle – high-performance for higher-pressure systems

* NS nozzle – standard counterflow nozzle

Operating pressure:

Typically 3–8 psi inlet pressure.

Features:

* Full-cone spray pattern

* Good anti-clog properties

* ABS or polypropylene

C. Marley Spray Header Components

Marley also uses:

* Orifice inserts

* Distribution pipes

* Grommets

* Quick-attach nozzles

This matters when replacing nozzles on older Marley towers.

2. Marley Cooling Tower Spray Material Options

Most Marley OEM nozzles are made from:

* ABS plastic (most common)

* Polypropylene (better chemical resistance)

* PVC (older models)

ABS offers:

* Good strength

* Good temperature resistance (up to ~90°C / 194°F)

* Low cost

✅ 3. Identification – How to Tell Which Marley Cooling Tower Spray You Have

If you want, you can upload a photo and I can help identify the exact model.

Typical markings:

* Spiral Target Nozzles have a cylinder + disc target

* XCD/XS nozzles have a fluted cone or star-shaped orifice

* Older Marley nozzles have embossed orifice numbers (e.g., 2.0, 2.5, 3.0)

✅ 4. Compatible Replacement Brands

Many suppliers produce aftermarket Marley-style nozzles:

* Brentwood

* ENEXIO

* Mesan

* Chinese manufacturers (ABS molded replacements)