Improving Uptime and Compliance in Canadian Pressure Relief Systems with CRN-Approved Change-Over Valve Solutions

In Canadian energy operations, pressure relief systems are not just a safety requirement — they are a critical part of keeping facilities running safely, efficiently, and in compliance.

For operators managing continuous processes, one of the ongoing challenges is balancing system availability with the need to maintain, inspect, or replace safety valves. Shutting down equipment for maintenance can be costly, but compromising on pressure protection is not an option.

That is where a change-over valve / safety valve combination can offer a practical solution.

The operational challenge: maintenance without unnecessary downtime

Across upstream, midstream, downstream, and industrial energy applications, pressure relief devices must be maintained to support safe operation and regulatory compliance. However, taking a valve out of service can create complications when uptime is a priority.

In many facilities, teams are looking for ways to:

• maintain protection while servicing safety valves
• reduce disruption to operations
• simplify integration into existing pressure relief systems
• stay aligned with Canadian code and registration requirements

A well-designed change-over valve assembly helps address these needs by enabling safer and more efficient switching between relief paths during maintenance activities.

Why CRN approval matters in Canada

For pressure-retaining components used in Canada, CRN (Canadian Registration Number) approval is an important part of project execution and compliance planning.

CRN approval confirms that the pressure-retaining design has been reviewed and accepted by the applicable provincial authorities for use in Canada, in accordance with applicable requirements such as CSA B51.

For engineering teams, contractors, and plant operators, this can help reduce uncertainty during specification and procurement by supporting confidence that the solution is suitable for Canadian applications.

LESER Change-Over Valve now CRN approved

The LESER Change-Over Valve has officially received CRN approval in accordance with CSA B51 requirements, marking an important milestone for Canadian users seeking compliant pressure relief solutions.

For energy facilities, this means access to a change-over valve solution designed to support both safety and system availability, while helping meet Canadian registration requirements.

Key design advantages for energy applications

The LESER Change-Over Valve / Safety Valve combination is designed to support reliable performance in demanding industrial environments. Key advantages include:

• Flow-optimized design for minimal inlet pressure loss
  Helps support pressure relief performance by reducing unnecessary restriction in the inlet path.
• Increased operational reliability
  Supports safer and more consistent operation during normal service and maintenance change-over activities.
• Seamless integration with safety valves
  Designed as part of a coordinated pressure relief solution, helping simplify implementation.
• Synchronized delivery to support project timelines
  Helps with planning and execution when project schedules are tight.

These features are especially relevant in energy applications where outages, delays, or design rework can have significant operational and financial impacts.

 

Supporting safer, more efficient pressure relief strategies

As Canadian energy facilities continue to focus on safety, reliability, and compliance, component selection plays an important role in long-term performance.

A CRN-approved change-over valve solution can help operators and project teams improve maintainability while maintaining confidence in their pressure relief strategy — especially in systems where uptime is essential.

How Westech Industrial can help

Westech Industrial supports customers across Canada with pressure relief and process safety solutions, including LESER safety valves and related applications support.

If you are reviewing pressure relief system upgrades, planning a new project, or looking for a CRN-approved change-over valve solution for a Canadian application, the Westech team can help you evaluate options for your system requirements.  For more information visit our website at https://westech-ind.com or call and speak to one of our representatives at 1-800-912-9262.

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