C Series Bulk Bag Fillers

System OVerview

Introducing the Spiroflow C-series bulk bag fillers – where precision, efficiency, and reliability converge to revolutionize your bulk material handling. With our cutting-edge solutions, you can optimize your filling process and meet the most demanding industrial requirements. Join us on a journey to explore the innovation and capabilities of the C-series bulk bag fillers.

Overview of the C-Series Bulk Bag Fillers

Conveyor systems manufacturers worldwide rely on bulk bags for the packaging, storage, and transportation of materials. Spiroflow’s line of bulk bag-filling equipment and fillers is designed to enhance the safety, ease, control, containment, and cost-effectiveness of the bulk bag-filling process.

The C Series bulk bag fillers, competitively priced, provide an ideal solution for users with moderate to low volume needs. The modular design of our C Series empowers users to select a basic unit that meets their initial requirements. As future production demands evolve, our comprehensive range of customizable options is readily available to address specific system requirements.

Explore All the Features of the Spiroflow C Series Bulk Bag Fillers

How Do C Series Bulk Bag Fillers Work?

Processors worldwide rely on bulk bags for the packaging, storage, and transportation of materials. Spiroflow’s extensive line of bulk bag-filling equipment offers a range of advantages, making the process of filling bulk bags safer, more efficient, controllable, contained, and cost-effective. These benefits are particularly valuable when integrated with conveyor belt systems. Don’t worry – Spiroflow, one of the leading belt conveyor manufacturers, has you covered with reliable and user-friendly technologies.

Our ongoing development of weighing and filling stations provides processors with the flexibility to choose between standard equipment or tailored solutions to accommodate specific requirements, whether related to accessibility, height, or safety considerations. What sets our bulk bag filling stations apart is their exceptional versatility. They can be adapted for use with rigid IBCs, drums, or octabins, extending their utility across various container types and seamlessly integrating into existing conveyor belt solutions for enhanced material handling

C Series Bulk Bag Fillers Sequence of Operations

With our C Series bulk bag fillers, simplicity and ease of operation are a must. The basic operational sequence unfolds as follows:

  • Place the bag loops of empty bulk bags over the support arms or bag support hooks.
  • Attach the bag spout or liner over the inflatable neck seal.
  • Adjust the height of the bag support arms (if selected).
  • Inflate the neck seal to secure the bag spout or liner.
  • Inflate the bag or liner with air (or there is an added nitrogen option).
  • Commence filling by weight or volume.
  • Apply vibration (if required).
  • When the bag is filled to its target weight or volume, deflate the neck seal and tie the bag spout or liner closed.
  • Engage the automatic loop release (if selected).

Key Factors to Consider Before Choosing the Best Conveyor Technologies for Your Needs

Before choosing a specific bulk bag filler, it is crucial to take into account several essential factors. This process serves a dual purpose: it aids in evaluating the unique requirements of the customer and facilitates our design engineers in identifying the most suitable tubular drag, belt, or flexible screw conveyor system to meet those requirements.

Here are some of the most important questions to ask yourself when choosing the right conveyor solutions for your manufacturing process.

We have the option to handle it either by pallet or by utilizing the bag loops.

To determine the appropriate bag style and size at this stage, it is advisable to consult both the bag manufacturer and Spiroflow. The bag should be optimized in terms of volume for safe storage and transportation. Notably, Spiroflow has achieved impressive results with Ameriglobe’s Fusion Baffle Bag, which is made without sewing and, in most cases, does not necessitate a liner.

To effectively control dust during the filling process, we employ an inflatable neck seal. All our filling heads are equipped with an inner product flow and an outer annulus for dust evacuation. Additionally, there is a dust extraction port included.

If you opt for volume-based filling, it is recommended to consider options such as pallet dispensers, automatic bag loop release, and bag take-off and accumulation conveyors. These features can be added to standard Spiroflow bulk bag-filling equipment at a later date.

In cases where the environment poses an explosion risk, it is advisable to consider static dissipative or groundable bags along with a suitable static monitoring device.

Nitrogen purging is an alternative. Conventionally, bags are inflated with air before filling, but nitrogen can be used instead to extend the product’s shelf life.

For very fine products, it is likely necessary to use a bag liner to prevent leakage or moisture ingress. However, there are various alternatives available, such as coated bags or specialized bag seams. It is crucial to ensure proper inflation of the liner to prevent creasing and subsequent discharge issues.

In most cases, yes. Vibration at the base of the unit is employed to deaerate and compact the product, optimizing bag volume and creating a safe and stable load. The CTE bulk bag filler utilizes our patented Cone Table densification for highly aerated powders.

Automatic loop release is available, although height adjustment is not offered on the CS Base Filler. The C-Series & CTE bulk bag fillers do offer height adjustment. Automatic loop release for filled bags is a practical labor-saving option for bags loaded on pallets. Additionally, powered height adjustment is recommended when filling different-sized bulk bags to expedite the filling process.

Certainly. Spiroflow provides a range of options for filling rigid bins, drums, and boxes/octabins.


Our C Series gain-in-weight bulk bag fillers are available in a variety of configurations. Our models are as follows:

Two vertical tubes are affixed to a steel base plate, allowing for the vertical adjustment of the horizontal loop support arms. An upper frame, securely attached above the two loop arms, provides support for the filling nozzle. This structural design ensures that the filling process remains steady and precise, even when integrated with conveyor belts for seamless material transport. To enhance stability, the sliding sections are thoughtfully equipped with locking pins, contributing to a secure and robust operation.

If the filling process is based on weight measurement, the lower steel frame is positioned on four load cells. These load cells boast a 200% overload capacity with a 100% section capacity and hold an NTEP rating. They come standard with a 5,000 Division accuracy. To remove filled bags, the neck is released from the filling spout, and the pallet with the filled bag is lifted a few inches using a forklift. Then, the bag can be backed out of the filler.

An alternative design is also available for the removal of bulk bags, which involves utilizing their loops.

  • Up to 20 bulk bags/hour
  • Bag capacity – 4,400 lb/2,000kg
  • Carbon/mild steel or stainless steel materials for construction
  • Two post design – Two vertical tubes welded to the steel base plate,
  • Steel base plate.
  • Vertically adjustable horizontal loop support arms,
  • Filling nozzle and frame,
  • Sliding sections with locking pins for positive location.

When filling by weight four (4) load cells mounted on a lower steel frame (200% overload capacity with 100% section capacity), NTEP rated & 5,000 Div. standard.

  • Height – 110″/280cm,
  • Width – 59″/150 cm + 14″/36 cm for control panel,
  • Depth – 59″/150 cm.
  • 80 psi/5.5 bar @ 30 CFM (850 l/cycle) for inflatable neck seal & bag inflation
  • 1 – 4 Hp (.75 – 3.0 kW) 230/460/575 V, 3 Phase, 60 Hz
  • Plant Voltage: 230/460/480/575
  • Control Voltage: 24 V DC/120 AC
  • Fill the nozzle with a dust extraction vent.
  • The filling nozzle design includes an inner open-ended cylinder with a second concentric cylinder (one end closed by an annulus) attached to it.
  • The product passes through the center cylinder into the bulk bag while displaced air & dust are routed through the outer chamber and through a dust sock to a dust collection (by customer) connection.

Bags are secured to the nozzle with an outer spring clamp.

  • Product Contact Surfaces – Stainless Steel Only


Our C Series gain-in-weight bulk bag fillers come with a variety of options so we can provide you with the ideal filler for your application.  Here is a sampling of some of the models in this category.

The C1-2 gain-in-weight bulk bag filler has a flat plate base for removing bags on pallets.

The C1-2LL ‘low loading’ bulk bag filler is designed for removing filled bags by pallet jack in low headroom areas.

Spiroflow filler C series

Our C1-2RF ‘rise & fall’ bulk bag fillers are designed to minimize breakage when filling fragile materials such as whole nuts. Filled bags are on pallets and removed with a forklift truck.

Mobile C1-2 bulk bag filler with 2 rigid casters, 2 swivel lockable casters & pneumatic cylinders used to isolate the load cells during movement

C1-2 bulk bag filler is designed with a custom base.

A filler C series

LC bulk bag filler is designed for handling bags by their loops.

Configuration Options of Our C Series Bulk Bag Fillers

Our C Series gain-in-weight bulk bag fillers come with a variety of options, so we can provide you with the ideal filler for your application. Here is a sampling of some of the models in this category:

Low Loading Bulk Bag Filler. For areas with limited headroom

Roller Conveyors for Easy Bag Removal

Nitrogen Purging

Full Management Data on Weight Controller

Automatic Bag Loop Release

Box Filling Adaptor

Automatic Height Adjustment

Roller conveyor Base with Vibration

Spinning Head

Static Grounding

A filler C series

Full Range of Filling Valves

Access Platforms

Mobile Units

There Is a Wide Range of Applications

Spiroflow’s bulk bag fillers are versatile, finding application in a broad spectrum of industries that encompass food, pharmaceuticals, chemicals, plastics, as well as building and construction sectors. Moreover, when integrated into a belt conveyor system, they become pivotal components in streamlining material handling processes within these diverse industries.

Our bulk bag weight fillers come equipped with numerous standard operating features, allowing processors to kickstart production without requiring supplementary equipment. Beyond these built-in capabilities, a comprehensive array of optional features is available, enabling a wide range of additional operations to be seamlessly executed on the same machine. This includes seamless integration into a conveyor belt system, ensuring efficient and adaptable material handling.

The filling system for a well well-known producer provides the flexibility to fill both bulk bags & boxes/octabins.

The bulk bag filler in this filling system for a well known nut producer utilizes a box cover when filling gaylords to prevent product contamination.

A special telescoping fill nozzle, extending from the floor above, delivers one of several nut products to fill bulk bags or boxes.

Spiroflow’s bulk bag filling equipment integrates foil or plastic bag liners, which, following a nitrogen purge and heat-sealing process, can significantly extend product storage life.

Really Big Jobs

36,000 tons in 27,000 bulk bags in Alaska, all in only 14 weeks!  Two Spirofil bulk bag fillers were delivered and operational in 6 weeks.

Complete Systems & Semi-automated Filling Systems

This is where we truly excel.  We take care of everything from concept to commissioning.

A semi-automated filling system gives large volume users the benefit of continuous operation without having to stop and unload each bag or gaylord.  Pallets are automatically fed to the filling rig and the bags are looped onto pneumatically operated hooks.  Once filling is completed, the loops are automatically released and the bag is then moved along the line by a powered take-off conveyor.

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