SKU: 68164111571

AVG ECV15-1200-LF 15mm 1200kPa ECV Expansion Control Valve

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Description

AVG ECV15-1200-LF 15mm 1200kPa ECV Expansion Control ValveOverview The AVG ECV15 1200 LF 15mm (1 2") 1200kPa ECV expansion control valve is used to regulate the water pressure inside hot water services, including heat pumps, electric, gas storage and solar water heaters across all mainstream brands in Australia such as Rheem, Vulcan, Rinnal, Dux, Aquamax, Thermann, Apricus and Solahart. The AVG ECV expansion control valve features the same threads, fitments and similar physical sizes with many other valve

Overview

The AVG ECV15-1200-LF 15mm (1/2") 1200kPa ECV expansion control valve is used to regulate the water pressure inside hot water services, including heat pumps, electric, gas storage and solar water heaters across all mainstream brands in Australia such as Rheem, Vulcan, Rinnal, Dux, Aquamax, Thermann, Apricus and Solahart. 

The AVG ECV expansion control valve features the same threads, fitments and similar physical sizes with many other valve manufacturers such as Reliance H50, Tomson, Nefa and Reflex. This makes the AVG ECV valve a perfect direct replacement to an existing valve in an old hot water heater. 

The ECV expansion control valve regulates the pressure caused by water volume expansions during normal heating cycles in a hot water service. The ECV expansion control valve relieves this increase in pressure by a controlled water dripping into a drain line typically of 2 to 5 liters per day depending on the hot water usage.

The ECV expansion control valve is color coded and used in conjunction with a matching color coded PTR pressure temperature relief valve of a higher pressure setting in a hot water system. Therefore, the ECV valve is designed to open first before the PTR valve does. Because the ECV expansion control valve is installed to the cold water supply line, this means the cold water is dripped out first, instead of hot water otherwise via the PTR valve. This cold water dripping feature ensures a better safety and promotes energy saving at the same time. The reduced duty cycle on the PTR valve can promote the PTR valve service life span too. 

A functioning ECV expansion control valve is a requirement by law in many Australian states by plumbing authorities for safety. A typical sign for a faulty ECV valve is when there is a large amount of water leakage in a stream, rather than a controlled dripping. The worn out or leaking ECV valve must be replaced immediately. 

Engineer's Notes

The small black plastic part opposite the discharge port is called an auxiliary and serves as an emergency fail safe device by blowing itself out in case of a blockage in the discharge drain pipe. However, this auxiliary can become a failure point itself over time by unintended leakage or blow out due to manufacturing defects. The auxiliary is a threaded part and can be easily screwed in/out. The auxiliary can be replaced cheaply, instead of buying the whole valve.

Although a faulty ECV valve itself is the most common cause for excessive leakages, this can also be caused by a faulty or insufficient pressure limiting valve, which regulates the inlet cold water supply pressure from the street mains into the tank. If the pressure limiting valve is faulty and allows excessive pressure into the water system, the ECV can leak when not faulty. In some extreme cases, the local mains street pressure may be so high to a point that the pressure limiting valve can become insufficient to limit the pressure to a typical 500kPa even with no faults. In these scenarios, a pressure limiting valve may need to be replaced or a pressure limiting valve must be used instead to limit the inlet water pressure sufficiently. 

The plumbing codes require the ECV and PTR discharge pipes connected to a nearby drain or roof down pipes, so the discharging water is not directly dripping to the ground. In cases of no or difficult access to an actual drain, a fake drain may be allowed by the plumbing rules by digging a hole on the ground and make up a fake drain using a PVC pipe section.                                         

Technical Details

  • Brand: Australian Valve Group (AVG)
  • Model: ECV15-1200-LF
  • Watermark License Number: WMK2639
  • Pressure Rating: 1200 kPa 
  • Color Code: Red
  • Matching PTR Valve: 1400kPa Red PTR
  • Insulation Jackets Included
  • Thread Size: 1/2" BSP (15mm) Male MI thread and female FI thread
  • Thread Size Physical Measurements: 20.995mm external male and internal female thread diameter (refer to the BSP sizing chart in the photo gallery)
  • Expansion Rating: 20 kW 
  • Replaceable Auxiliary 
  • Dry Spring Internal Mechanism with High Temperature Boots and Seals
  • Material: Lead Free DR Brass Valve Body and Stainless Steel Levers
  • Intended Use: Electric tanks, solar tanks, gas storage tanks and heat pumps
  • SKU: AVG-ECV15-1200-LF

Package Contents

  • AVG ECV15-1200-LF 15mm (1/2") 1200kPa ECV Expansion Control Valve With Insulation
  • Package Weight: 300g
Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 68164111571

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4.3 ★★★★★
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Product Reviews
M
Verified Purchase
Maria M.
Chelsea, US
★★★★★ 5
Favorite toy!
Color: Orange/Large, Size: Orange
My dog lives these!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
S
Verified Purchase
Shorty & Lily's Mom
Grantham, US
★★★★★ 5
Takes a beating - looks like new!
Color: Blue/Medium, Size: Blue
EDITED AGAIN, 12/28/22: My boy still has his original blue one of these and the yellow one from way back. He's received a couple more over the years which he's managed to sneak out of the house and lose - evidently neighbor dogs or perhaps foxes, etc love them, too, and carry them off?! At any rate, he'd managed to get himself back to his original two, so I bought him a late Christmas present of a new yellow bone. He just opened the package (with help, of course - he's smart, but lacks the necessary opposing thumbs to do it on his own) and he was ecstatic! He reached into the mailing envelope, grabbed it, gave it a couple of triumphant tosses then ran for his bed, pulled a blanket in, and has been chewing, fighting with, burying in the blanket and "discovering" it for about a half hour now! I don't know what the attraction is, but he still loves these things and they're still lasting! The only other toys that have lasted more than a day are Nylabones (because he won't even look at them, let alone touch them) and a set of interlocked skinny rubber rings that he's not at all interested in, but if I ask about them, he'll move them around the room for a couple of days to make me feel better! LOL EDITED TO ADD 2022: Here I am, back 5 1/2 years later to say my dog STILL has this bone and makes use of it a couple of times a week. And he still loves it and sleeps with it. He has gone through a couple of the smaller version (yellow instead of blue) over this time frame because those get constant use. But that’s amazing in itself!! These are still the only toy I would call indestructible. Great toy! I have a dachshund who destroys toys in record time. I can hear the amused chuckles now, but anyone who has seen him in action (including rottie, pit bull and Doberman owners) is in awe. He is very methodical and relentless - the mad genius of dog toy torture! Small and quiet but utterly ruthless. Anyway...my boy has been working on this since the beginning of October and the thing looks like new! I think you can see one tooth mark, otherwise it looks untouched! This is a dog who can reduce Kongs and other rubber toys to a pile of chunks in minutes. But he also LOVES it - carries it around, brings it into his bed at night to sleep, and when his doxie brother (who is far too dignified to do dog toys) doesn't feel well, it is offered up as a "feel better" snuggly...for about 2 minutes. But it's the thought that counts, right? I don't know what makes this so attractive to my mini-Jaws and so long-lasting, but it works!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2017
M
Verified Purchase
Michael & Challice R.
Pawtucket, US
★★★★★ 5
HEAVEY Duty!
Color: Blue/Medium, Size: Blue
Almost not destructible! My dogs chew through 99% of the toys we purchase, but never this one! The medium size is good for our Doberman with jaws of steel!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
A
Verified Purchase
ARAW
Massapequa, US
★★★★★ 5
Great chew toy to keep around the house
Color: Blue/Medium, Size: Blue, Color: Blue/Medium, Size: Blue
This came highly recommended by the behavioural team at the animal shelter and it hasn't disappointed. It's interesting reading the reviews, because our power-chewer pit-mix who can get a chunk off a split antler in a matter of minutes, hasn't ever been able to get a bite out of this bone! This is a great play toy for her, because it's soft enough that we can throw it for her to fetch in the house without worrying about breaking/denting something and are able to pull it out of her mouth fairly easily once she brings it back (still hasn't learned "drop it!"). The bone isn't flavored, so she'll rarely go to it on her own to chew on, but we keep it near the couch so if she ever gets bitey, we have it close at hand to offer to her as a chewer. It's also entertaining to tuck it into her collar and have her figure out how to remove it to play with it (see photo for this game and size compared to 50lb mutt).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 15, 2017
B
Verified Purchase
Britney
Omaha, US
★★★★★ 5
Best bouncy bone!
Color: Orange/Large, Size: Orange, Color: Orange/Large, Size: Orange
My pups love these bones! They are soft and rubbery, but very durable. Had them for a little over 6 months and it has survived my extreme chewers and many tug of war games, and only has a few puncture marks! They bounce on my concrete floors and my pup loves to play fetch with this. Great purchase
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2025

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