Marley Cooling Tower Drift Eliminators

Here is a clear and complete overview of Marley (SPX) cooling tower drift eliminators — the types, features, applications, and performance.

 ⭐ Marley Cooling Tower Drift Eliminators (SPX Cooling Technologies)

Marley is known for producing very high-efficiency drift eliminators for both factory-assembled and field-erected cooling towers. Their eliminators typically achieve drift rates as low as 0.0005% of circulating water.

  1. Marley TriArmor™ / Tri-Pass Drift Eliminators

Most common Marley design used in modern counterflow towers.

 ✔ Features

* Multi-bend, three-pass airflow design

* Very high water capture performance

* Constructed from rigid PVC

* Typically installed above fill media in counterflow towers

* Designed for NC, MD, and Class 8000 series towers

✔ Drift Performance

≤ 0.0005% of circulating water — meets stringent environmental standards.

  2. Marley HP700 / HP800 Cellular Drift Eliminators

Used in both crossflow and counterflow applications.

✔ Features

* Honeycomb/cellular structure

* Efficient multi-turn air channels

* Low pressure drop

* UV-stabilized PVC

* Often shipped as modular panels

 ✔ Applications

* Marley NC, MCW, Series 500, and some BAC-compatible replacements

* Replacement parts for upgrade of older Marley towers

3. Marley Blade-Type (Field-Erected) Drift Eliminators

Used on large field-erected, industrial, or power plant towers.

✔ Construction Options

* PVC

* FRP composite

* Galvanized or stainless steel (older designs)

✔ Features

* Multi-pass curved blade shape

* Large-span design—ideal for big sections

* High temp & UV resistant (especially FRP)

✔ Applications

* F400, FDC, FHS, Class 6000 & 7000 series towers

* Petrochemical plants, refineries, and power plants

4. Marley Eliminator Panels for Crossflow Towers

Especially used in Marley XF/XC/MCW crossflow towers.

 ✔ Features

* Vertical panel design

* Integrated drift + louver combination in some models

* Efficient removal at low air velocities

✔ Benefits

* Easy installation

* Replaceable without removing fill

* Lower drift compared to old blade types

⭐ Drift Performance Ratings (Typical Marley Specs)

Marley Tower Series	Drift Eliminator Type	Drift Rate (%)
NC & NCWD	Tri-Pass PVC	0.0005
MD / MD series	Multi-pass cellular	0.001–0.0005
MCW Crossflow	Blade/cellular	0.005
Induced Draft Field-Erected	FRP Blade	0.0005–0.001
Older Marley Towers (replacement)	HP700/HP800	0.002–0.005

⭐ Materials Marley Uses

* PVC (most common; UV stabilized)

* FRP (for high temp industrial service)

* Stainless steel / galvanized steel (legacy)

⭐ Where Marley Drift Eliminators Are Installed

* Counterflow towers: directly above the fill, under the fan deck

* Crossflow towers: behind air-inlet louvers, above fill sheets

* Field-erected towers: across the plenum near the fan cylinder