Delivering Scalable Wireless TMV Monitoring Across 500 Hospital Valves 

The Logan Hospital Expansion Project, completed in 2024 for Queensland Health, represents a major healthcare infrastructure investment supporting one of Queensland’s fastest-growing regions.

The development involved:

• Construction of new clinical facilities built over an existing multi-storey car park
• Refurbishment and integration of several existing hospital buildings
• Expansion of hydraulic, digital, and asset management systems

The complexity of building over operational infrastructure and integrating new services with legacy facilities required careful multidisciplinary coordination - particularly across hydraulic services, digital infrastructure, compliance, and asset management systems.

With approximately 500 thermostatic mixing valves (TMVs) installed across both new and existing buildings, the hospital required a scalable TMV monitoring system capable of supporting immediate operational needs while allowing for future infrastructure upgrades.

Galvin was engaged during the early design phase to develop a bespoke wireless TMV monitoring solution tailored specifically to the Logan Hospital environment.

The Challenge – Scalable Thermostatic Mixing Valve Monitoring in a Live Hospital Environment

The project required the delivery of a monitoring system capable of overseeing hundreds of TMVs across new and existing infrastructure, while minimising installation complexity within a fully operational healthcare facility.

Key Project Challenges

• Integrating monitoring capability with existing third-party TMVs during Stage One of the development
• Designing a system that would enable future transition to Galvin CliniMix^® TMVs in later stages
• Reducing installation complexity by minimising cable runs and electrical infrastructure
• Ensuring compliance with Queensland Health IT security and digital network requirements
• Delivering reliable monitoring across approximately 500 TMV points

The solution needed to balance scalability, digital integration, cybersecurity compliance, and hydraulic performance,  without disrupting hospital operations.

The Solution – Wireless IoT Thermostatic Mixing Valve Monitoring System

Working closely with hydraulic consultants, electrical engineers, and plumbing contractors, Galvin developed a custom TMV monitoring platform designed specifically for the Logan Hospital expansion.

Wireless Commercial IoT Communication

The system incorporates commercial wireless IoT communication technology, enabling monitoring devices to transmit data reliably across the facility without extensive hard-wired networks.

This approach significantly reduced installation complexity in a live hospital environment while maintaining consistent data transmission across the campus.

Custom TMV Outlet Legs with Integrated Flow Measurement

A key element of the solution was the development and manufacture of bespoke TMV outlet legs with integral flow measurement capability, fabricated at Galvin’s Western Australian manufacturing facility.

These assemblies enable the monitoring system to detect and report operational conditions directly at each TMV point.

Each monitored installation includes:

• Integrated flow monitoring devices
• Thermostatic temperature probes
• Wireless data transmission hardware
• Custom outlet leg assemblies with embedded sensors

Galvin worked directly with plumbing contractors during installation and commissioning to ensure reliable deployment across all monitoring points.

System Integration and Data Security for Healthcare Infrastructure

Given the sensitive nature of hospital infrastructure, system security and data management were critical considerations.

Galvin collaborated with Queensland Health and their IT teams to ensure the TMV monitoring system:

• Operates within secure virtual IT environments
• Hosts data within Australia
• Aligns with government cybersecurity requirements
• Supports potential integration with higher-level systems such as Building Management Systems (BMS) and custom reporting platforms

This ensured the solution met the hospital’s strict digital governance and security standards.

Operational Benefits – Practical TMV Compliance and Asset Management

Rather than implementing a complex and costly building-wide integration platform, the project team prioritised a simple and practical operational model that would deliver immediate value to hospital maintenance teams.

Automated Daily TMV Monitoring Reports

The monitoring system generates automated daily reports identifying TMVs requiring attention, including:

• Low-flow conditions
• No-flow events
• Over-temperature alerts

Each morning, the maintenance team receives a concise email report that effectively functions as a daily job sheet.

This enables maintenance personnel to:

• Quickly identify affected valves
• Dispatch technicians to specific locations
• Resolve issues promptly
• Confirm corrective action through subsequent reporting

Once issues are addressed, the system confirms resolution in the following day’s report.

Risk Reduction – Scalding Prevention and Water Hygiene Management

The proactive identification of low-flow, no-flow, and over-temperature events significantly reduces operational risk within the hospital environment.

Early detection supports:

• Reduction of scalding hazards
• Improved management of water hygiene and infection control risks
• Mitigation of issues associated with poorly performing or stagnating outlets

By enabling early intervention, the system reduces reliance on broad preventative maintenance programs and widespread manual hygiene purge routines.

Importantly, the approach allows maintenance teams to undertake targeted corrective action rather than relying solely on time-based servicing programs.

Project Outcome – Digital TMV Monitoring at Scale in Healthcare

The Logan Hospital Expansion demonstrates how digital thermostatic mixing valve monitoring systems can be successfully implemented in complex healthcare environments while maintaining a practical and efficient maintenance approach.

By combining:

• Custom Australian hardware manufacturing
• Integrated flow and temperature sensing technology
• Wireless IoT communication
• Secure data architecture
• Straightforward, actionable reporting tools

the project delivered a scalable monitoring platform supporting both existing infrastructure and future upgrades.

Approximately 500 TMVs across the facility are now actively monitored, providing the hospital with enhanced visibility over system performance and asset condition.

Tangible Operational Outcomes

• Reduced risk exposure associated with scalding and water hygiene events
• More efficient allocation of maintenance resources through targeted servicing
• Reduced reliance on manual hygiene purge routines
• Improved water conservation by limiting unnecessary flushing activities
• Proactive identification of issues before escalation into operational or safety risks

By providing clear daily reporting and enabling early intervention, the monitoring system functions as a proactive asset management tool, supporting safer patient environments while improving operational efficiency across the facility.