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SIG TrueFill 21 filling equipment

Count on the SIG TrueFill 21 to help you get started with bag-in-box packaging with its easy-to-use, semi-automatic technology, supported by SIG engineers.
  • Ambient-fill capable
  • Manual filler requiring one operator
  • Fills packages up to 6gal

Entry-level filling

The SIG TrueFill 21 reflects decades of expertise in bag-in-box filling and provides an exemplary entry-level or lab-scale filling solution. With its precise filling process and robust construction, it ensures that each bag-in-box package is filled with precision, maintaining product quality. The SIG TrueFill 21 helps you:

  • Get started with bag-in-box
  • Trial and scale new products

Key features

The SIG TrueFill 21 filling machine is a single head, semi-automatic filler that requires one operator. The filler is constructed of non-corrosive material and all product contact surfaces are 316L stainless steel and food-grade construction.

Known process applications


Occurs when a product is filled into a package with no additional sterilization treatment.

Package sizes


Don't see the size you need? Contact us for more information.

Filling speeds

Package SizeFilling Speed
(L)(Liters per Minute)(Bags per Minute)

Servicing your machine

We transform operations for better by providing superior system quality, performance, and value though industry-leading solutions. From preventative maintenance to asset monitoring and end-to-end traceability, we offer a variety of service options to keep your equipment up and running with the best possible OEE.


Related solutions

SIG FlexTap
1.5 - 20L / 0.4 - 5gal
SIG Terra PourCap 1400
1.5 - 20L / 0.4 - 5gal
SIG QuickSeal Connect
1.5 - 20L / 0.4 - 5gal
SIG TrueFill 900 filling equipment

Looking for a co-packer?

SIG can help!

We have a wide network of co-packers around the world that can help you get your products to market quickly and efficiently.