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 27 - Aug 1

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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
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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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 16306712020

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4.6 ★★★★★
Based on 21 reviews
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I
Verified Purchase
intac
Houston, US
★★★★★ 3
Narrow at toes
Size: 8, Color: Smoke Grey
Cute but very narrow at the toe opening. My feet are a little wide their so they are not very comfortable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
J
Verified Purchase
Julie Banayote
Omaha, US
★★★★★ 5
Love these
Size: 6, Color: Black
Love these shoes. Very nice quality. Lots of compliments every time I wear them. I have two pairs - one black and the other light tan. I highly recommend.
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Reviewed in the United States on March 27, 2026
A
Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 5
Nice Bags Lots of Colors
Color: Black, Size: Standard 15.6 Inch
This was a great carry on bag for me. The size is perfect and has lots of pockets. The material is very nice and durable and I got black but it is still a nice color black with many other colors to Choose from. I brought it to London and was very happy with its functionality. It does get a little heavy when lots of things are in it but I am not used to wearing a backpack. It does have a loop to slide onto your carrying on luggage handle as well.
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Reviewed in the United States on April 26, 2026
C
Verified Purchase
Cody R.
Whiting, US
★★★★★ 5
Stylish, Lightweight & Great for School
Color: Chocolate, Size: Standard 15.6 Inch
This BAGSMART quilted laptop backpack is a really smart pick for school. I got this for my daughter in high school and she likes it. The material feels soft but durable, and the water-resistant finish has come in handy during light rain. There’s a padded compartment for her school laptop, plus several other pockets for books, cables, and daily essentials. The padded shoulder straps and breathable back mesh make it comfortable to carry even when it’s loaded. Pros: • Good organization with multiple compartments. • Water-resistant fabric protects gear in damp weather. • Comfortable to carry thanks to padded straps and mesh back. • TSA-friendly design with a strap that attaches to rolling luggage. • Lightweight for a backpack with this much structure — not bulky. Cons / Things to consider: • While water-resistant, it’s not fully waterproof — heavy rain could be a risk. Bottom Line: If you want a woman-friendly backpack that’s stylish and functional — perfect for daily commuting, school, or short trips — this BAGSMART backpack makes a lot of sense. It’s not the most rugged bag on the market, but for what it is (lightweight, organized, water-resistant), it hits a sweet spot.
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Reviewed in the United States on November 16, 2025
L
Verified Purchase
LB
Boise, US
★★★★★ 5
Cute and functional
Color: Pink, Size: Standard 15.6 Inch
Very comfortable, plenty of pockets. Great color. Lovely quality.
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Reviewed in the United States on May 22, 2026

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