Oil Skimmers Model 3F360-GCS guided floating weir oil skimmer for enclosed storage tanks

Floating Weir Oil Skimmer for Enclosed Storage Tanks – Model 3F360-GCS™

Complete 3F360-GCS Guided System / 304 Stainless Steel / Not Applicable – GCS System Only
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Oil Skimmers Model 3F360-GCS guided floating weir oil skimmer for enclosed storage tanks
  • Oil Skimmers Model 3F360-GCS guided floating weir oil skimmer for enclosed storage tanks
  • Oil skimmers logo who are the oil removal solution expert partner of Filtra International
  • Oil Skimmers Model 3F360 floating weir oil skimmer with three floats and 360-degree central intake
  • Oil Skimmers Model 3F360-GCS guided floating weir oil skimmer for enclosed storage tanks
  • Oil skimmers logo who are the oil removal solution expert partner of Filtra International
  • Oil Skimmers Model 3F360 floating weir oil skimmer with three floats and 360-degree central intake
Floating Weir Oil Skimmer for Enclosed Storage Tanks – Model 3F360-GCS™

Floating Weir Oil Skimmer for Enclosed Storage Tanks – Model 3F360-GCS™

System Configuration
Construction
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MODEL 3F360-GCS™

Guided floating oil recovery inside enclosed storage tanks

The Oil Skimmers Model 3F360-GCS™ is designed for continuous surface-oil removal inside enclosed and aboveground storage tanks where liquid levels can change significantly during operation.

It combines the adjustable 360° floating-weir technology of the Model 3F360 with a guided control arrangement that keeps the skimmer aligned along a defined vertical path as the liquid level rises and falls.

The system is specifically intended to avoid the need for complex rigid vertical riser-pipe arrangements inside large industrial tanks.

Primary application Enclosed & aboveground tanks
Oil intake Adjustable 360° floating weir
Vertical control Two stainless-steel guide cables
Discharge Flexible hose follows level changes
Construction 304 or 316 stainless steel
Platform Model 3F360 floating weir
STORAGE TANK CHALLENGE

Why conventional floating skimmers can be difficult inside large tanks

Storage tanks combine changing liquid levels with limited internal access and restrictions around roof or wall penetrations. The skimmer needs to remain at the oil-water interface without moving uncontrollably through the tank.

Changing tank levels Filling, transfer and discharge operations can move the liquid surface through a substantial vertical range.
Limited internal access Enclosed tanks make inspection, adjustment and maintenance more complicated than open pits or basins.
Tank penetrations Pipework passing through the roof or tank structure must accommodate internal movement without creating unnecessary mechanical loading.
Continuous oil removal Surface oil may need to be removed while the tank remains in normal service rather than only after draining.
OPERATING PRINCIPLE

How the Model 3F360-GCS works

The floating weir stays at the liquid surface while the Guidance Control System keeps the skimmer positioned on a controlled vertical travel path.

1

Float at the surface

The Model 3F360 floating head rests at the oil-water interface and follows changes in tank liquid level.

2

Maintain alignment

Two braided stainless-steel guide cables maintain the skimmer on a defined vertical path inside the tank.

3

Recover from 360°

The adjustable central weir accepts the upper oily-water layer from all directions around the floating skimmer.

4

Follow with flexible hose

Recovered liquid exits through a flexible discharge hose that moves with the skimmer as tank level changes.

GUIDANCE CONTROL SYSTEM

Key components of the GCS configuration

The GCS adapts the standard floating-weir platform specifically for controlled operation inside storage tanks.

1
3F360 floating weir Adjustable 360° surface intake positioned at the liquid interface.
2
Two guide cables Heavy-duty braided stainless-steel cables maintain controlled skimmer alignment.
3
Roof-mounted hardware Provides the upper fastening points for the guided vertical travel system.
4
Floor-mounted hardware Provides the lower guide-cable anchoring points inside the storage tank.
5
Flexible discharge hose Moves with the skimmer instead of requiring a rigid vertical riser assembly.
6
Protective intake screen Helps reduce debris intake around the floating 3F360 weir.
SYSTEM ADVANTAGES

Why guide the floating skimmer instead of using rigid riser piping?

Controlled vertical travel The skimmer follows the liquid surface while remaining aligned in a defined area of the tank.
Flexible discharge path Flexible hose follows the changing liquid level instead of depending on a rigid moving pipe assembly.
Fewer rigid joints The design avoids complex riser arrangements with multiple elbows and articulated connections.
Reduced structural loading The guided configuration is designed to reduce mechanical loading and stress at tank penetrations.
360° intake Floating oil can approach the adjustable centre weir from every direction.
Continuous operation Surface oil can be recovered as tank levels change during normal operation.
APPLICATIONS

Typical 3F360-GCS applications

The GCS configuration is specifically intended for large industrial tank environments where floating-oil recovery must continue across changing liquid levels.

Aboveground storage tanks Guided surface oil recovery across changing tank levels.
Enclosed industrial tanks Floating skimming where internal access is limited.
Waste-oil holding tanks Continuous removal of suitable separated surface oil.
Refinery storage Tank-based surface-oil recovery subject to site requirements.
Petrochemical storage Guided floating-weir operation in industrial tank systems.
Power generation Bulk and process-fluid storage applications with floating oil.
Electrical and hazardous-area applications: Supply voltages or ATEX compliance. Motor, heater, controller, and generator specifications should be confirmed for the actual geographical site and hazardous-area classification.
APPLICATION FIT

When to consider the Model 3F360-GCS

Strong GCS applications

  • Enclosed or aboveground storage tank
  • Significant liquid-level variation
  • Need for continuous surface-oil recovery
  • Limited internal access
  • Skimmer must remain within a defined tank area
  • Rigid vertical riser piping is undesirable
  • 360° floating-weir recovery is appropriate

Review another solution when

  • The application is an open pit, pond or lagoon without a guidance requirement
  • A standard manually adjustable 3F360 can float freely
  • Self-adjusting 3FFC flow control is the main requirement
  • Selective low-water tube skimming is more appropriate
  • The contaminant is stably emulsified rather than floating freely
Recovery capacity: the current manufacturer GCS page does not publish a separate fixed recovery-rate table for this tank-specific configuration. Final 3F360-GCS sizing should therefore be confirmed from the required duty, tank geometry, hose arrangement and pump selection.
3F SERIES

Which floating weir configuration?

MODEL 3F360™

Free-floating adjustable weir

For tanks, pits, ponds and other applications where the floating head can operate freely without a guidance system.

MODEL 3FFC™

Self-adjusting Flow Control

For high-volume and changing-flow applications where automatic weir response and pump-pressure control are useful.

MODEL 3F360-GCS™

Guided storage-tank skimming

For enclosed and aboveground tanks requiring controlled vertical movement as tank levels rise and fall.

Engineer the GCS around the storage tank

A 3F360-GCS installation depends heavily on the actual tank dimensions, vertical operating range and available roof and floor attachment locations.

Useful application information includes:

  • Tank diameter or length and width
  • Overall tank height
  • Minimum and maximum liquid levels
  • Available roof penetrations or access openings
  • Possible roof and floor guide-cable attachment points
  • Oil or floating contaminant type
  • Approximate surface oil quantity
  • Liquid temperature
  • Required hose length and discharge location
  • Required transfer distance
  • Available electrical supply if a pump package is required
  • Hazardous-area or ATEX classification where applicable

Request a storage-tank application review

Filtra International can review the tank geometry and operating conditions to determine whether the 3F360-GCS is suitable and define the skimmer, guidance, hose and pump configuration.

Tank drawings, photographs and information about the minimum and maximum working liquid levels are particularly useful.

Hazardous-area electrical equipment is application-specific. ATEX suitability must be confirmed for the actual European installation and must not be assumed from a standard pump or motor description.
Request 3F360-GCS Application Review & Quote
FREQUENTLY ASKED QUESTIONS

Model 3F360-GCS floating storage-tank oil skimmer

Common questions about guided floating-weir oil recovery inside enclosed and aboveground storage tanks.

What is the Model 3F360-GCS?
The Model 3F360-GCS™ is a guided floating-weir oil-skimming system designed for enclosed and aboveground storage tanks with fluctuating liquid levels. It combines the Model 3F360 floating weir with a guide-cable system for controlled vertical travel.
What type of tank is the 3F360-GCS designed for?
The system is specifically designed for enclosed and aboveground industrial storage tanks where liquid levels fluctuate and internal access can be limited.
How does the 3F360-GCS follow changing tank levels?
The Model 3F360 floating weir rests on the liquid surface and moves vertically as the level rises or falls. Two braided stainless-steel guide cables maintain controlled alignment during this movement.
What does the Guidance Control System do?
The Guidance Control System keeps the floating skimmer aligned along a defined vertical path inside the tank instead of allowing it to move freely across the full tank surface.
How many guide cables are used?
The manufacturer specifies two heavy-duty braided stainless-steel guide cables together with roof-mounted and floor-mounted fastening hardware.
Does the 3F360-GCS require rigid riser piping?
The GCS is specifically designed to avoid the need for a complex rigid vertical riser-pipe assembly. Recovered liquid exits through a flexible discharge hose that follows changes in tank level.
Does the 3F360-GCS recover oil from all directions?
Yes. It is based on the Model 3F360 platform and uses an adjustable central floating weir that accepts the upper oily-water layer from all directions around the skimmer.
Does the 3F360-GCS have debris protection?
Yes. The underlying 3F360 floating-weir platform uses a protective screen around the central intake to help reduce debris entry.
What construction materials are available?
The 3F360-GCS is available in durable 304 or 316 stainless-steel construction. Final material selection should consider the stored liquid, chemistry and operating environment.
What is the recovery capacity of the 3F360-GCS?
The current manufacturer GCS product page does not publish a separate fixed recovery-rate table for this tank-specific configuration. The required skimmer size, hose and pump arrangement should therefore be selected from the actual tank and recovery duty.
What is the difference between the 3F360 and 3F360-GCS?
The standard 3F360 is a free-floating adjustable weir skimmer. The 3F360-GCS uses the same floating-weir principle but adds a guide-cable system to control vertical movement inside enclosed and aboveground storage tanks.
What is the difference between the 3FFC and 3F360-GCS?
The 3FFC is designed around a continuously self-adjusting Flow Control weir for changing recovery conditions. The 3F360-GCS is designed around controlled vertical travel inside storage tanks and uses the adjustable 3F360 floating-weir platform.
Can the 3F360-GCS be used in refinery or petrochemical tanks?
Refinery and petrochemical storage are listed applications for the system. Hazardous-area requirements, including any applicable European ATEX requirements for pumps, motors, controls and the complete installation, must be reviewed separately for the actual site.
Can the tank continue operating while oil is skimmed?
The system is designed for continuous surface-oil removal during normal tank operation while the floating skimmer follows changes in the liquid level.
What information is needed to select a 3F360-GCS?
Useful information includes tank dimensions, overall height, minimum and maximum liquid levels, roof access and penetrations, possible guide-cable attachment points, oil type, liquid temperature, required hose length, transfer distance, pump requirements and any applicable hazardous-area classification.

 

Technical support and validation

Selecting the correct filtration solution often requires verification under real process conditions. Filtra International supports this process through several practical testing and validation options.

• Filter samples – available for compatibility and performance checks in existing filter housings.
• Full-scale filter housing rental – for temporary installations or process evaluation.
• Laboratory and pilot-scale filtration units – enabling controlled testing before full implementation.
• Application testing by our team – customers may send product samples for filtration trials and performance evaluation.

These options allow process validation before committing to a permanent installation.

Not sure if this configuration is right for your application?

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Typical parameters include:

• Flow rate
• Particle size or filtration rating
• Temperature and pressure
• Chemical composition of the media