LESER Best Availability Valves

Additional Products for Higher Plant Availability

LESER Best Availability solutions are designed to help improve plant uptime, maintain pressure protection, and support safer maintenance planning in industrial applications.

At Westech Industrial, we support Canadian customers with LESER Best Availability solutions for higher plant availability, including:

• Change-over valve combinations with safety valves
• Bursting disc combinations with safety valves

These coordinated solutions are designed to help facilities maintain reliable overpressure protection while improving operational flexibility and reducing unnecessary downtime.

What Is LESER Best Availability?

LESER Best Availability is a category of additional pressure relief solutions designed to improve system availability and support efficient plant operation.

Rather than relying on a standard safety valve installation alone, these solutions combine safety valves with complementary components to address common operational challenges such as:

• maintenance downtime
• pressure loss concerns
• corrosion exposure
• valve sticking
• availability planning for critical systems

For plants where uptime and maintainability are key, these combinations can provide a more robust pressure relief strategy.

LESER Best Availability Product Lines Supported by Westech

1) Change-over Valve in Combination with Safety Valves

A change-over valve / safety valve combination supports redundant protection, allowing one safety valve to remain in operation while the other can be serviced.

This approach is commonly used where plant availability is a priority and shutdowns are costly or difficult to schedule.

Key benefits

• Most economical solution for redundant protection
• Flow-optimized design for minimal inlet pressure loss
• Modular system for adaptation to required connection diameters and pressure stages
• Robust, maintenance-free design with simple changeover
• Short delivery times, synchronized with the safety valves
• Complete, coordinated combination from one supplier
• Qualified resistance coefficients to support engineering and pressure drop calculations

Why it matters

2) Bursting Discs with Safety Valves in Combination

A bursting disc / safety valve combination is used to support safety valve performance and protection in applications where process conditions may affect long-term valve reliability.

This combination is especially useful where corrosion, deposits, or sticking could impact the safety valve.

Key benefits

• Tight up to the set pressure
• Protection of the safety valve against corrosion and sticking
• Component-tested combination of safety valve and bursting disc
• Compliance with the 3% criterion
• No consideration of the bursting disc in the sizing process (for the component-tested combination)

Why it matters

By protecting the safety valve and supporting sealing performance up to set pressure, this solution can help improve reliability, reduce maintenance issues, and support long-term availability in demanding services.

Why Plant Availability Matters in Pressure Relief Design

In many industrial and energy facilities, overpressure protection systems must do more than meet code requirements — they also need to support:

• continuous operation
• maintainability
• predictable service intervals
• reliable valve performance
• efficient shutdown planning

LESER Best Availability solutions are designed to help address these operational goals by combining safety valves with engineered complementary components for improved system performance and uptime.

Available: Canada Wide

Request a Demo Book a Lunch & Learn Support