SKU: 16306712020

CALEFFI Solar Hot Water Anti Frost Protection Valve 15mm 1/2" Female Thread

$144.90 $161.00
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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4

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Description

CALEFFI Solar Hot Water Anti Frost Protection Valve 15mm 1/2" Female ThreadOverview CALEFFI 15mm (1 2inch) 603040 solar frost protection anti freeze valve for solar thermal systems to protect hot water storage. Prevents ice built up in domestic water circuits avoiding possible damage to water storages and pipes in hydraulic, solar and irrigation systems. Made in Italy. Australian Watermark approved. Technical Details Manufacturer: CALEFFI, Made in Italy Model: 603040 Specifications: Opening Temperature: 3C Closing

Overview

CALEFFI 15mm (1/2inch) 603040 solar frost protection anti-freeze valve for solar thermal systems to protect hot water storage. Prevents ice built-up in domestic water circuits avoiding possible damage to water storages and pipes in hydraulic, solar and irrigation systems. Made in Italy. Australian Watermark approved. 

Technical Details

Manufacturer: CALEFFI, Made in Italy
Model: 603040
Specifications:

Opening Temperature: 3°C
Closing Temperature: 4°C
Ambient Temperature Range: -30°C to 90°C 
Accuracy: ±1°C
Maximum Working Pressure: 1000 kPa

Thread Size: 1/2" BSP (15mm) Female thread (15FI)
Material: 

  • Body: DZR Alloy or EN 12165 CW602N
  • Obturator Stem: brass EN 12164 CW614N
  • Seat: Stainless Steel
  • Spring: Stainless Steel
  • Seal: EPDM 
  • Strainers: Stainless Steel 

Intended Use: Solar water heaters in frost prone area
Package Weight: 135g


Package Contents

  • CALEFFI 603040 Frost Protection Valve

Warranty

1 year replacement (parts only) warranty from the order date. Proof of purchase is required. 


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: 16306712020

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4.2 ★★★★★
Based on 21 reviews
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A
Verified Purchase
Alvaro
Houston, US
★★★★★ 5
10/10
Number of Items: 6, Color: Black (6-pack), Size: X-Large
These black T shirts are a great buy. The quality is solid, the material feels comfortable, and they fit really well without being too tight or too loose. They hold their shape after washing and the color stays nice and dark. Perfect for everyday wear, whether it is for layering or just a simple outfit. The multipack makes it even better value for the price. Definitely worth it and I would buy again.
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Reviewed in the United States on May 3, 2026
E
Verified Purchase
Elsviel
Alexandria, US
★★★★★ 5
Comfortable and Great Everyday T-Shirts
Number of Items: 5, Color: Black/Sport Grey/Charcoal, Size: Small
These T-shirts are very comfortable and perfect for daily wear. The fabric feels soft on the skin and the fit is just right for casual use. They are breathable and hold up well after washing, making them a reliable basic wardrobe item. Overall, a simple but high-quality multipack that I really enjoy wearing.
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Reviewed in the United States on May 22, 2026
E
Verified Purchase
EgLhan
Whiting, US
★★★★★ 5
Great fabric
Number of Items: 5, Color: Black/Sport Grey/Charcoal, Size: Large
The Gildan Men's Crew T-Shirts (Style G1100) are the ultimate essential for anyone seeking a reliable, high-quality basic that holds its own against more expensive brands. These shirts feature a heavyweight cotton construction that provides a structured fit and stays opaque wash after wash, while the taped neck and shoulders ensure the collar and seams remain durable under daily use. With a tag-free design and breathable fabric, they offer a comfortable, irritation-free experience that makes them a perfect "set-it-and-forget-it" staple for any wardrobe.
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Reviewed in the United States on April 19, 2026
A
Verified Purchase
anthony
Belleville, US
★★★★★ 4
Good quality and value for my son!
Number of Items: 5, Color: Black/Sport Grey/Charcoal, Size: Large
I bought the Gildan Men’s Crew T-Shirts multipack on Amazon for my 12-year-old son, who is on the heavier side and thus sometimes difficult to shop for. Pre-teen kids grow fast and go through clothes quickly, so I didn’t want to spend a lot of money on basics he’ll probably outgrow in a year. These shirts are really affordable, especially for a multipack, and the quality is surprisingly good for the price. The fabric is soft and comfortable, and my son says they feel good to wear all day at school. They’re lightweight and did not shrink after washing. I also like that the shirts don’t get stretched out like some cheaper T-shirts do. The fit works well for him too. They’re simple, classic crew neck tees that can be worn on their own or layered under hoodies and jackets. We’ve used them for school and just everyday wear. Another thing I appreciate is that they’re easy to care for. I just toss them in the wash and dryer and they come out looking fine every time. Overall, these are a great value. If you need affordable, comfortable basic T-shirts for a growing kid (or an adult!), this pack is definitely worth buying.
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Reviewed in the United States on May 17, 2026
A
Verified Purchase
Arod56
Belleville, US
★★★★★ 5
Nice
Number of Items: 5, Color: Navy/Charcoal/Cardinal Red, Size: Large
My husband really likes the quality of these t-shirts. They fit nicely and dont have a sagging neckline as some t-shirts tend to have. The colors are nice and they wash up well. Not a heavy so comfortable for everyday use whether relaxing, doing yard work etc
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Reviewed in the United States on May 14, 2026

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