- HEP Plumbing
- Thermostatic Mixing Valves

Thermostatic Mixing Valves
Thermostatic Mixing Valves | Commercial Plumbing | Plumbing | Newcomb
Newcomb businesses trust HEP’s licenced team to keep every outlet at a safe, steady temperature with precision-engineered thermostatic mixing valves. From hospitals that need anti-scald certainty to cafés chasing perfect hand-washing temps, we design, supply, install and commission TMVs that meet AS 4032.1 and legionella-control requirements—without disrupting your trade. Our technicians arrive on time, test every point, and leave you with full compliance documentation and the confidence that your hot water won’t endanger staff or guests.
Backed by 24/7 emergency response and scheduled maintenance plans, we integrate TMV servicing into your broader commercial plumbing strategy so you’re never caught off-guard by audits or temperature spikes. Choose HEP for transparent quotes, local Newcomb know-how and workmanship that’s guaranteed long after the job is signed off—then get back to business with water that’s safe, efficient and totally under control.
FAQs
What is a thermostatic mixing valve (TMV) and why is it important in commercial plumbing?
A TMV is a valve that blends hot and cold water to a pre-set, safe outlet temperature—typically no higher than 50 °C (or 45 °C in high-risk areas such as hospitals and aged-care facilities). In commercial settings it prevents scalding, protects vulnerable users, reduces legal liability, and helps meet Victorian occupational health and safety requirements.
Is a TMV legally required for my business in Newcomb, Victoria?
Most Victorian commercial premises that provide ablution facilities for the public or for vulnerable users—such as childcare centres, schools, medical clinics, aged-care homes, and disability services—must install compliant TMVs under the Plumbing Regulations 2018, Australian Standard AS 4032.3 and AS/NZS 3500. Even if your business is not specifically mandated, insurers and risk assessments often recommend TMVs to satisfy duty-of-care obligations.
How often should TMVs be tested and serviced?
Victorian guidelines stipulate that TMVs in commercial buildings be tested and certified at least every 12 months by a licensed plumber endorsed for TMV work. High-risk sites (healthcare, aged care) commonly adopt 6-monthly testing. Servicing includes temperature verification, fail-safe operation checks, filter cleaning, valve calibration, and issuing a compliance report for your records.
What is involved in installing a TMV and will my business experience downtime?
Installation begins with assessing existing pipework, selecting an appropriately rated TMV, and positioning it in an accessible location for future maintenance. Our team isolates the water supply, fits the valve with strainers and test points, and commissions it to the specified set temperature. For most retrofits we stage the work so facilities remain partially operational, limiting downtime to 1–2 hours per bathroom bank.
Which standards and certifications should my TMV comply with?
In Victoria TMVs must carry WaterMark certification and comply with AS 4032.1 (performance requirements) and AS 4032.2 (maintenance requirements). Installation and pipework must align with AS/NZS 3500. Commissioning and test reports must match the procedures set out in AS 4032.3. Using WaterMark-approved valves and a VBA-licensed plumber ensures your installation passes any future audit.
What are common signs a TMV is failing and needs attention?
Warning signs include fluctuating outlet temperatures, water above 50 °C, reduced flow, inability to achieve hot water, visible leaks, or activation of the valve’s internal failsafe (complete shutdown of flow). If any of these occur, isolate the valve if possible and call our Newcomb commercial plumbing team immediately to prevent scald risk and potential water damage.