SKU: 5158691557

AW Logi PLV20C-500LF 20mm 500kPa Male Compression Pressure Limiting Valve

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Description

AW Logi PLV20C-500LF 20mm 500kPa Male Compression Pressure Limiting ValveOverview The AW PLV20C 500 20mm (3 4") 500kPa male compression PLV pressure limiting valve is commonly used to regulate the supply cold water pressure to 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 AW PLV pressure limiting valve features the same threads, fitments and similar physical

Overview

The AW PLV20C-500 20mm (3/4") 500kPa male compression PLV pressure limiting valve is commonly used to regulate the supply cold water pressure to 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 AW PLV pressure limiting valve features the same threads, fitments and similar physical sizes with many other valve manufacturers such as Reliance, AVG, Tomson, Nefa and Reflex. This makes the AW PLV pressure limiting valve a perfect direct replacement to an existing valve with no plumbing pipe modifications required. When the compression nuts and the copper olives are removed, this PLV pressure limiting valve can be used as male threaded valves.

The PLV pressure limiting valves usually come in 350, 500 and 600kPa ratings under Australian Watermark standard regulations. Each pressure specification is used on specific plumbing applications, depending the pressure rating requirement of the appliances. The PLV pressure limiting valve regulates the inlet water pressure by employing a sliding piston design internally and creates a pressure drop as the water passes through the valve. This piston design is directional and therefore there is an arrow on each pressure limiting valve body indicating the water flow orientation.  

Engineer's Notes

When a PLV pressure limiting valve fails, it is usually caused by the corrosion and debris clogging-up inside the valve body, preventing the piston's sliding actions over its usage life spans. In most cases, the water pressure and flow rate can drop significantly causing an unsatisfying user experience. In less common scenarios, the opposite can also happen and the pressure limiting valve may lose its pressure limiting ability, potentially blowing up appliances with over pressures. 

A PLV pressure limiting valve can only limit the dynamic pressure of the passing inlet water. The valve can not regulate a static pressure increase inside a water heater when the water heats up and expands, where PTR and ECV valves must be used instead for the pressure relief.

The 500kPa is a nominal outlet pressure rating under Australian Watermark Standard testing condition with a set inlet pressure. In real world situations, the actual mains supply water pressure can fluctuate and vary greatly from locations to locations. This presents a challenge for many hot water heater installations, especially when the street's mains pressure is too high. In this scenario, the PLV pressure limiting valve may fail to limit the inlet pressure below the hot water tank's pressure rating requirement. The PTR and ECV valves of the hot water service can leak excessively or even in a continuous stream as consequences. In such situations, pressure reducing valves can be used in the places of the pressure limiting valves to address this problem. 

The compression nuts at the ends of the PLV pressure limiting valve are used to connect to the Australian standard 20mm 3/4"sized copper pipes. The olives inside bite into the copper pipes to form a water tight seal when the cone nuts are tightened and no plumbing tapes should be used for compression type connections to maximize the biting force. 

When the compression end nuts and olives are removed, the the male threads are exposed underneath. The PLV pressure limiting valve can be used as a threaded valve to screw into fittings and other valves. During all threaded connections, plumbing tapes must be used between the male and female threads. 


Technical Detail

  • Brand: AW (Austworld)
  • Model: PLV20C-500LF (Current lead free model)
  • Watermark License Number: WMK26608 
  • Pressure Outlet Rating: 500 kPa
  • Temperature Rating: 80°C
  • Max Inlet Pressure: 2000kPa
  • Flow Rate: 50L/min at max allowable inlet pressure of 2000kPa 
  • Thread Size: 3/4" BSP (20mm) compression ends with copper olives; 3/4" BSP (20mm) male thread when the cone nuts removed
  • Thread Size Physical Measurement: 26.441mm external male thread diameter (refer to the BSP thread sizing chart in the photo gallery)
  • Material: LF DR Brass
  • Intended Use: Domestic Hot Water Services
  • SKU: AW-PLV20C-500LF

Package Contents

  • AW PLV20C-500LF 20mm (3/4") 500kPa PLV Pressure Limiting Valve
  • Package Weight: 400g
Shipping Notes
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 5158691557

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That One Guy
Louisville, US
★★★★★ 5
Solid shelves that look good!
Size: 36in, Color: 3-layer, Size: 36in, Color: 3-layer
Got these as a focal piece to my basement bar (added some cheap stick on LED strip lights behind it). I’m glad I ordered these! They are sturdy, shelves are solid wood, and the overall quality of the shelves is great. They were easy to install with provided hardware (although there isn’t much instruction in terms of mounting them, just putting them together), but it was simple enough to figure out with two people and a level (one holding, one making marks). Each pipe end has 4 screw holes, so expect to put 16 holes in your wall, but as shown in the photos the shelves can hold a good amount of weight. I recommend these for anyone looking to add the industrial look to your wall with a quality built shelf.
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Reviewed in the United States on August 7, 2023
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david nespoli
Draper, US
★★★★★ 5
VERY sturdy and almost foolproof
Size: 36in, Color: 3-layer, Size: 36in, Color: 3-layer
This kit is made of real wooden planks, and metal pipes and fittings. Installation is simple- assemble each end of the kit, hold it up to the wall using a magnetic level, mark the four holes for each mounting piece, then repeat with the other side. You'll need a tape measure to make sure that the ends aren't too close together or too far apart, and measure from the ceiling or floor to ensure a level surface. You will want a second set of hands for most of the install process. This kit comes with good molly bolts and strong screws that match the finish of the metal hardware. Make sure that each side of the unit is oriented the same way, as I had to flip one side after neglecting to do so at first. Retaining brackets and wood screws are included for securing each shelf to the metal frame. A power drill makes this part very easy, and can be done mostly solo as the brackets can be pinched to clip onto the frame while you attach the screws. Once installed, this unit is VERY sturdy. There is no play or wobbling when testing the attachment to the wall. If there is, tighten your screws and make sure that the fittings to the wall mounts are hand-tight. These shelves can handle heavy kitchen staples and books with no problem. It is a tier more expensive than most Ikea-style shelving, but that's worth it for the confidence that my dry goods are safely stored in a convenient place.
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Reviewed in the United States on July 10, 2023
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David H
Phoenix, US
★★★★★ 4
Great shelving unit
Size: 48in, Color: 4-layer
Great looking shelving unit.
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Reviewed in the United States on April 6, 2026
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r atienza
Pawtucket, US
★★★★★ 5
Nice Product
Size: 48in, Color: 4-layer
The TP-Link Omada 5-Port Gigabit Easy Managed Switch offers stable performance and straightforward setup. It delivers consistent connectivity and solid value for the price. A dependable choice for a well-organized network.
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Reviewed in the United States on January 21, 2026
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Kolie
Lake Worth, US
★★★★★ 5
Very Sturdy Industrial Shelves with a High-End Look
Size: 48in, Color: 3-layer
The OLDRAINBOW Industrial Pipe Shelves with Wood Planks 3 Tier 48in are very sturdy and have a high-end look once installed. The combination of metal pipes and wood planks gives them a strong, rustic-industrial style that looks more expensive than expected. They feel solid and well-built, not flimsy at all. Once mounted, the shelves feel very stable and can hold a good amount of weight, which makes them practical for books, decor, or kitchen items. Overall, these shelves are both functional and visually impressive. They add a polished, high-end feel to the space and I am very happy with them.
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Reviewed in the United States on April 21, 2026

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