Keep Your Hot Water System Safe, Compliant, and Performing
The temperature and pressure relief (T&PR) valve is one of the most important safety components in your hot water system. It’s designed to prevent catastrophic failure by releasing water when internal pressure or temperature exceeds safe limits. However, without regular testing and proper maintenance, this crucial valve can fail silently—often with expensive and dangerous consequences.
At Deadshort Services, we take a proactive approach to plumbing safety. With over 35 years of experience in South Australia, our fully licensed plumbers are trained to inspect, test, and replace hot water relief valves across residential and commercial properties. Whether you’ve noticed a persistent leak or you’re unsure when your valve was last tested, we’re here to help.
In fact, many clients don’t realise the risks until it’s too late. Our team has seen first-hand the damage a failed relief valve can cause—flooded homes, scalding hazards, and costly replacements that could have been avoided. Don’t leave your hot water system to chance.
Why Your Hot Water Relief Valve Matters
Water heaters can generate extreme pressure and heat, especially in sealed systems. The T&PR valve exists to release that pressure before it causes damage. Most Australian valves are calibrated to open at 99°C or 1000 kPa—anything beyond that becomes a serious safety risk.
When operating correctly, the valve opens momentarily to release steam or hot water via the discharge pipe, preventing dangerous pressure build-up inside the tank.
What Can Go Wrong?
If this valve fails, several serious issues can occur:
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No discharge due to corrosion or blockage
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Constant dripping caused by scale buildup or valve wear
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Valve stuck open, causing ongoing water loss and increased energy bills
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Excessive pressure build-up—potentially resulting in a burst tank or scalding
The consequences can be severe. From flood damage and scalding risks to complete system failure, prevention is always better than cure.
In particular, older hot water systems that haven’t been serviced in years are high risk. Many homes in Adelaide still rely on units that are well past their expected lifespan, putting even greater stress on relief valves and fittings.
Important: The Plumbing Code of Australia mandates that hot water systems be fitted with working pressure and temperature relief valves to remain compliant.
How to Test Your Hot Water Relief Valve
Testing a T&PR valve is simple but should be done with caution. We recommend homeowners test their valve every 6–12 months, or better yet, have it professionally serviced as part of an annual plumbing check-up.
Here’s how to test it safely:
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Switch off the power or gas supply to the water heater.
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Place a bucket beneath the discharge pipe.
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Lift the lever on the valve—hot water should flow out.
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Release the lever—the flow should stop completely.
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Check for drips. If the water continues to run or the valve won’t snap shut, it likely needs replacing.
This small action can prevent thousands in repair costs and weeks of inconvenience.
According to Rheem Australia, T&PR valves should be replaced every 3–5 years, regardless of performance, to prevent silent failure.
If testing seems daunting—or if you’re seeing signs of failure—it’s time to call in the experts.
Why Choose Deadshort for Hot Water Testing and Repairs?
Deadshort Services isn’t just a plumbing company—we’re one of Adelaide’s most experienced multi-trade service providers, trusted by homeowners, councils, aged care facilities, and developers for decades.
Our Plumbing & Gas team offers:
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T&PR valve testing, repairs, and replacements
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Full system diagnostics for gas and electric hot water systems
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Expansion tank installations for closed-loop systems
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Leak detection and water-saving upgrades
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24/7 emergency service for bursts or leaks
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Advice and supply of new hot water units from trusted brands like Rheem, Rinnai, Thermann, and Bosch
Every job is handled by qualified professionals who take pride in their work. We don’t cut corners, and we don’t outsource critical tasks. That’s why property managers, builders, and domestic clients alike rely on Deadshort for end-to-end plumbing care.
We also carry all necessary parts on-board for common valve types, vehicles and trades covering all suburbs allowing us to complete most replacements on the spot—saving you time and eliminating multiple call-outs.
The Multi-Trade Advantage: One Team, Full Support
What sets Deadshort apart is our in-house capability across multiple trades. If your hot water issue turns out to involve electrical faults, a leaking roof, or damaged insulation, we won’t make you wait for subcontractors.
We offer integrated services in:
Our cross-trade knowledge means faster issue resolution and seamless communication. For example, a leaking valve may be misdiagnosed as a roofing fault—but our teams collaborate to find the real source. With one number, one call, and real-time job tracking, you’re always in control—without the runaround.
Want Extra Value? Join Our Membership Program
Domestic clients who’ve had a trade service completed are eligible for the Deadshort Services Membership, which includes:
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10% discount on all future trade works (up to $5,000 per invoice)
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Priority booking and exclusive offers
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Ongoing support from our trusted, local team
This is ideal for proactive homeowners who value safety, efficiency, and continuity of service. Plus, with regular maintenance reminders, we help take the hassle out of keeping your home in top shape.
No call centres. No fine print. Just real, reliable service from a South Australian business.
Book Your Valve Test or Service Today
Don’t wait for something to go wrong. Regular testing and maintenance of your hot water relief valve is a quick, affordable way to protect your system and your property.
Call us on (08) 8410 0887 or email service@deadshort.com.au to book a test, service, or replacement today.
With over 35 years of experience, a strong reputation for quality, and a multi-trade edge, Deadshort Services is your one-call solution for plumbing, safety, and peace of mind.
Deadshort Services — One Number, One Call, Multiple Trades.
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Need help with a leaking T&PR valve or a plumbing issue?
Our licensed plumbers are equipped to handle everything from faulty pressure relief valves and leaking taps to stubborn blockages and full hot water system replacements. If your T&PR valve is dripping, seized, or long overdue for a test, we’ll inspect it, test it properly, and replace it if needed—ensuring your system stays safe, efficient, and fully compliant.
From routine maintenance to urgent hot water breakdowns, you can trust Deadshort Services to get the job done properly—no fuss, no shortcuts.
Call now. One number, one call, multiple trades.
