SKU: 24204999099

CALEFFI 533555H High Performance 20mm Pressure Reduction Valve, 100-600kPa Adjustable

Sale price$74.70 Regular price$83.00
Save 10%

Pay in installments of $20.75 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

CALEFFI 533555H High Performance 20mm Pressure Reduction Valve, 100-600kPa AdjustableOverview The Caleffi 533555H 20mm 3 4" inline high performance pressure reduction valve is made in Italy and Australia Watermark approved. The "H" in the models name indicates this is a high performance version of pressure reduction valves in Caleffi ranges with a high temperature rating at 80C and a high inlet pressure rating at 2000kPa (VS standard Caleffi version at 40C and 1600kPa respectively). The valve body casting and dimensions are the same

Overview

The Caleffi 533555H 20mm 3/4" inline high performance pressure reduction valve is made in Italy and Australia Watermark approved. The "H" in the model’s name indicates this is a high-performance version of pressure reduction valves in Caleffi ranges with a high temperature rating at 80°C and a high inlet pressure rating at 2000kPa (VS standard Caleffi version at 40°C and 1600kPa respectively). The valve body casting and dimensions are the same between the H and standard Caleffi pressure reduction valves, but the cartridges are different. The comparison photos between the 2 models are shown in the photo gallery for your reference. The standard Caleffi pressure valve has the same model’s name of 533555 without the "H" and is sold also at my store at a cheaper price.

The Caleffi 533555H pressure reduction valve features a pressure adjustment range of 100-600kPa with a factory setting at 500kPa. Caleffi is one of a rare few manufacturers in Australia offering pressure reduction valves that can adjust to a pressure setting as low as 100kPa, which is required for specialized applications.

The pressure reduction valves are commonly installed in residential plumbing works such as after water meters or just before entering houses. The pressure reduction valves can ensure a stable water supply pressure supply, despite the fluctuations in the mains water supply pressure from the streets. 

The pressure reduction valves can serve as a more reliable and versatile alternatives to more traditional pressure limiting valves, when used in hot water services such as electric, heat pump, gas storage and solar hot water heaters. The pressure reduction valve employs a membrane design with a stiff pre-loaded adjustable spring, opposed to a sliding piston mechanism found in a pressure limiting valve which often causes failures from clogging up. 

In real world installations, it is sometimes found that pressure limiting valves cannot limit pressures sufficiently in places where unusually high street mains pressures are present. This can cause troubles with ECV and PTR valves leaking on hot water services. The pressure reduction valves can be used in such situations and offer a far better pressure control from our in-field experiences over the years in our own plumbing jobs in Brisbane. 

The pressure reduction valve comes with a BSP 6mm test plug inbuilt, where an optional pressure gauge can be inserted for pressure measurement at the outlet. It must be noted that the pressure gauge is only intended to be used as a measurement tool and must be removed after use, as it could rust inside out if left in a wet environment for prolonged periods of time. 

 

Technical Details

  • Manufacturer: CALEFFI, Made in Italy
  • Australia Watermark Approved
  • Model: 533555H
  • Specifications:
    • Flow Rate: 30L/min@100kPa; 120L/min@500kPa; 125L/min@600kPa
    • Maximum Working Temperature: 80°C
    • Maximum Upstream (Inlet) Pressure: 2000kPa
    • Downstream (Outlet) Setting Pressure Range: 100 kPa - 600 kPa 
    • Factory Pressure Setting: 500kPa
    • Optional pressure gauge can be inserted for downstream pressure measurement via the BSP 6mm test plug 
    • Extractable and serviceable cartridge with stainless steel filter mesh
  • Thread Size: 3/4" BSP (20mm) Female Thread (20FI x 20FI)
  • Physical Thread Measurement: 26.441mm internal diameter, refer to the BSP vs Physical Thread Measurement Table in the photo gallery
  • Material: DR Brass Body
  • Intended Use: Hot water heaters and special applications in high temperature or pressure situations
  • SKU: 533555H and 533555H-PRG

 

Package Contents

- Caleffi 533555H 20mm 3/4" inline pressure reduction valve

- Package Weight 500g (620g with the optional gauge)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 24204999099

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 10 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
JJR
San Leandro, US
★★★★★ 5
Great all around printer !
Style: All-in-One Printer, Style: All-in-One Printer
Awesome printer ! The software was a bit cumbersome at first for pc so make sure your pc and anti-virus ate updated and restart your pc and it should be a piece of cake . The ink is super easy to fill, no spills and every color spout is different so you really can't accidentally use the wrong color . It is a little bit on the loud side but not enough to complain about or remove a star especially at this price point . It's a very good price considering the amount of ink it comes with .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
K
Verified Purchase
Kristina
Houston, US
★★★★★ 5
Great value, easy set up!
Style: All-in-One Printer
So far I give this Epson Eco Tank ET-2400 a five star review. It was very easy to set up. I bought for printing some legal documents as well as personal ones. The scan feature on this epson printer is amazing. Over the last several days I have been working to upload family photos that were in a bin my mom kept that we have had from well before I was born. These photos some of them are from the 1940's. I have been able to upload probably a thousand photos so far and still am only half way through. The espon scansmart app is amazing as well. I have been uploading up to 6 photos at once depending on the size, crop them and then save them all in a few easy steps. The app is able to detect the photos very quickly and separate them perfectly. I'm so glad I bought this print and I believe the ink will last as long as they claim. Would definitely recommend to family/friends.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
J
Verified Purchase
John Downs
Charlottesville, US
★★★★★ 5
Easy to use, Prints great!
Style: All-in-One Printer, Style: All-in-One Printer
Full disclosure, I own a Epson Ecotank at home and I bought this one for my business. I do not print a lot otherwise I would’ve bought a laser printer. For someone who doesn’t do a lot of printing it’s perfect. It prints photos flawlessly as you see in my photo I printed a photo of my grandson. I would say even if your print needs are in the middle this would be a great printer. It doesn’t use much ink at all. And now you can find off brand ink for a fraction of the price of name brand.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
T
Verified Purchase
Tom T
Lexington, US
★★★★★ 3
Good Printer Imposible Instructions.
Style: All-in-One Printer
Received the printer yesterday and began the process of setting it up. First I needed to download the software and drivers. That's when the pain began. I understand wireless printers and shared network printers. In this case, I wanted to connect the printer to our home wireless network so different computers could access it. The User's Guide spends a little time on a "Wireless Direct" setup where you connect your computer wirelessly directly to the printer, but little time on a LAN printer setup. After loading all the software and drivers, I finally got the printer connected to my LAN, but it took a number of false starts and trial and errors to get the printer on the LAN to be visible to my laptop. There are essentially zero instructions about this in the user's guide. Eventually I got it to print on my laptop. Then I needed to hook it up to my wife's laptop. Again, no instructions on connecting multiple computers to the printer over a LAN. I did know enough to "share" the printer in the printer settings. I eventually installed the complete software and driver package on wife's laptop. When trying to connect wirelessly, I kept getting error codes. After a few hours, I defaulted to the USB cable installation method. Now I could at least complete the installation without errors. When I went to the list of printers on the laptop I saw the epson, but it said "offline". I think that's because what I was seeing was the USB instance of the printer, not the LAN version. I finally went to Device Manager and found a second instance of the epson printer marked "Network". I was able to make this the default and the printer would now print from both laptops. Only about 3 hours more to get a second laptop to print. Since the Epson EP 2400 is a home printer and likely to be set up for wireless operation, it should take a visit by the Geek squad to get it up and running. Epson should be ashamed of their manual and instructions. Now that it's working, it does seem to print well although a bit slow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 27, 2023
A
Verified Purchase
Apiffanie George
Lowell, US
★★★★★ 5
Great product, quality colors and vibrant prints
Color: 1BK/1C/1Y/1M
Best Sublimation Ink I have found so far. Great size bottles for the price you pay. Lasts a long time and the colors print great and when you press the print the colors come out BEAUTIFUL and VIBRANT! Dries quickly after printing so no worries on smudging but even after sitting over a month on the paper still presses like you printed it that day!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026

recommand products