Fortress have worked closely with the food and beverage industry for decades, providing the most robust stainless steel safeguarding solutions to withstand harsh cleaning and jet-wash downs. Our most recent development is the world’s first 3-A approved hygienic interlock – the HGL.

It is critical to prevent contamination and bacterial growth where safeguarding solutions sit in near proximity to food, beverage, and pharmaceutical manufacture.
The quest to find a manufacturer of a safeguarding solutions which can enforce run down times to keep operators safe from hazards, withstand the gruelling clean in place procedures, whilst designed to prevent contaminant growth, is over.

The HGL offers an open, stainless-steel & easy-to-clean design with an 8,000N retention force to prevent unsafe access. FDA approved PBT rubber seals and no metal-on-metal contact guarantee maximum protection against water and foreign body ingress during clean in place procedures.

Louis represents a range of interlocking solutions in addition to the HGL, designed for the harshest cleaning and wash down applications. All products within the Louis range are designed with the highest level of ingress protection IP69 and third party tested and approved.

Key benefits

Extreme cleaning resistance

Minimise bacterial growth

Food safe design

  • Hygienic guard lock with third party 3-A approval for use in sanitary and food-safe applications
  • Prevent against defeat with a high coded actuator uniquely paired within this device
  • A range of pre-wired solutions for monitoring entry, and enforcing run down times
  • Robust design ensures a single device can require the highest safety performance levels
  • Suitable for applications up to SIL3, Cat.4 PLe
  • Non-solenoid and solenoid solutions available
  • High coded RFID actuator with over 4 x109 unique codes
  • Optional safety on guard and safety on guard locking
  • IP67 & IP69
  • High actuator retention force of 8,000N
  • Mounting options available to maximise access to clean product
  • 24V control
  • Stainless steel 316

A Fortress representative is on hand to support you with your application. Contact our team to scope your requirements and find the best solution for you.

All downloadable assets

To have access to the Louis technical information, please login to

  • Use our Hygienic Guard Lock configurator here
  • Convert your unique ITM number into a Fortress part number using our Reference tool
  • Calculate the performance level of your unique safety system using our SISTEMA library
  • Click here for more Fortress Product tools

Access control in manufacturing

Fortress offers the ability to control who can access industrial equipment safely alongside when they can access safely. Data of who, when and where from access events is collated for efficiency analysis.