C Series Bulk Bag Fillers


Processors around the world use bulk bags to pack, store, and transport materials. Our range of Spirofil bulk bag filling equipment and bulk bag fillers makes filling bulk bags safer, easier, controllable, contained, and cost effective.

The competitively priced C Series bulk bag fillers are the ideal solution for users with low to medium volume requirements.  The modular construction of our C Series enables users to specify a basic unit for their initial requirements. Where future production demands determine the need for additional operational features, a full range of options is available designed to meet particular system requirements.



Processors around the world use bulk bags to pack, store, and transport materials. Our range of Spirofil bulk bag filling equipment makes filling bulk bags safer, easier, controllable, contained, and cost effective.

Continuous development of our weighing and filling stations gives processors the choice of standard equipment or customized to suit access, height or hazardous considerations. Our bulk bag filling stations are also more versatile than many on the market – they can be adapted for use with rigid IBCs, drums, or octabins.

Our C Series bulk bag fillers are simple and easy to operate.  The basic sequence of operation is as follows:

  1. Place the bag loops of empty bulk bag over the support arms or bag support hooks.
  2. Attach the bag spout or liner over the inflatable neck seal.
  3. Adjust the height of the bag support arms (if selected).
  4. Inflate the neck seal to secure the bag spout or liner.
  5. Inflate the bag or liner with air (or there is an added nitrogen option)
  1. Commence filling by weight or volume.
  2. Apply vibration (if required).
  3. When the bag is filled to its target weight or volume, deflate the neck seal and tie the bag spout or liner closed.
  4. Engage the automatic loop release (if selected).
  5. Remove the filled bulk bag by forklift, pallet jack or roller conveyor (depending on your application).

Wide Range of Applications

Spirofil bulk bag fillers offer the widest range of applications and are used extensively across an equally wide range of industries including food, pharmaceuticals, chemicals, plastics, building, and construction.


Many standard operating features are included in our bulk bag weigh fillers, enabling the processor to begin immediate production without the need for extra equipment. In addition to the many built-in features, a full range of options is provided, allowing many other operations to be performed from the same machine.


Before selecting a particular bulk bag filler, some key factors need to be considered. This not only helps to assess a customer’s own particular needs but also assists our design engineers in determining the optimum system for those needs.

A. By pallet or by the bag loops.


A. At this stage, you should consult both the bag manufacturer and Spiroflow to determine the proper bag style and size. The bag needs to optimize its volume for safe storage and transport. Spiroflow has seen outstanding results with Ameriglobe’s Fusion Baffle Bag, which is manufactured without sewing and, in most cases, does not require a liner.


A. An inflatable neck seal effectively contains the dust during filling. All our filling heads have an inner product flow and an outer annulus for dust evacuation.  A dust extraction port is also included.


A. If filling by volume, options such as pallet dispensers, automatic bag loop release, bag take-off and accumulation conveyors should be considered. These can be added at a future date to standard Spiroflow bulk bag filling equipment.


A. If the area poses an explosion risk, static dissipative or groundable bags may be recommended together with a suitable static monitoring device.


A: Nitrogen purging is an option. Traditionally when bag filling, the bag would be inflated with air before filling commences, but nitrogen can be used instead to increase product shelf life.


A. If the product is very fine, you probably will, to prevent leakage or moisture ingress. However, various alternatives can be used such as coated bags or special bag seams. The liner must be inflated correctly to avoid creasing and subsequent discharge problems.


A. Usually, yes. Vibration at the base of the unit deaerates and compacts the product to optimize the bag volume and form a safe and stable load. The CTE bulk bag filler uses our patented Cone Table densification for highly aerated powders.


A. Automatic loop release is available but height adjustment is not offered on the CS Base Filler the C-Series & CTE bulk bag fillers offer height adjustment. Yes, automatic loop release of filled bags is a useful labor-saving option for pallet loaded bags. Powered height adjustment is also recommended if different sized bulk bags are being filled in order to speed up the filling process.


A. Yes. Spiroflow supplies a range of options for filling rigid bins, drums, and boxes/octabins.


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.

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.

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


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 welded to a steel base plate where the horizontal loop support arms can be vertically adjusted.

A frame mounted above the two loop arms supports the filling nozzle. The sliding sections are provided with locking pins for positive location.

If filling by weight the lower steel frame is mounted on four load cells which have a 200% overload capacity with 100% section capacity, are NTEP rated & have 5,000 Div. as standard.
Filled bags are removed by releasing the neck from the filling spout, lifting the pallet & the filled bag a few inches with a forklift & backing the bag out of the filler.

An alternative design is available for removing bulk bags by their loops.

Fill Rate & Bag Capacity

  • Up to 20 bulk bags/hour
  • Bag capacity – 4,400 lb/2,000kg

Standard Materials of Construction

  • Carbon/mild steel or stainless steel materials of construction

Frame Style & Standard Components

  • 2 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

Load Cells

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

Typical Dimensions

  • Height: 110”/280cm
  • Width: 59”/150 cm + 14”/36 cm for control panel
  • Depth: 59”/150 cm

Pneumatic Requirements

  • 80 psi/5.5 bar @ 30 CFM (850 l/cycle) for inflatable neck seal & bag inflation

Electrical Requirements

  • 1 – 4 Hp (.75 – 3.0 kW) 230/460/575 V, 3 Phase, 60 Hz

Energy Consumption

  • Plant Voltage: 230/460/480/575
  • Control Voltage: 24 V DC/120 AC

Dust Control/ Air Displacement

Fill nozzle with 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 is routed through the outer chamber & 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


Spiroflow’s C Series Bull Bag Fillers are designed to accommodate combinations of design options to meet your specific filling application needs.

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
Full Range of Filling Valves
Access Platforms
Mobile Units


All of our C-Series bulk bag fillers can be provided with gain-in-weight control which include weight display and a batch controller. A weigh display only is also available. Please share your controls needs with your sales engineer for full specifications.


Filling Bulk Bags, Boxes or Drums

Processors need to respond quickly to customer demand and be able to supply product in other kinds of containers such as rigid IBCs, drums, octabins and other IBCs. With the addition of special adaptors, this can be achieved using the same filling platform, providing a versatile, multi-purpose machine.

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.

Custom Designs

Bring us your challenges.  We design and manufacture custom solutions every day.

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