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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:
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Body: DZR Alloy or EN 12165 CW602N
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Obturator Stem: brass EN 12164 CW614N
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Seat: Stainless Steel
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Spring: Stainless Steel
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Seal: EPDM
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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.
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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.
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4.5 ★★★★★
Based on 1777 reviews
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Product Reviews
★★★★★ 5
Great stuff.
Style: Tropical Coconut
No weird smell or greasy residue, feels great on the skin. Tried it while on vacation (friend's lotion), and bought some when I got home. It is my go to now.
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Reviewed in the United States on July 1, 2025
★★★★★ 5
Solid Option for a Sunscreen Spray! Nice Even Mist!
Item Package Quantity: 1
I’ve been using the Naked Sundays Hydrating Glow Mist SPF 50+ and overall I’m really impressed. One thing I was a little concerned about at first is that it does contain alcohol, so I expected it might be drying. Surprisingly, it hasn’t dried my skin out the way other similar products have, which is a big plus for me.
The scent is pleasant and not overpowering. It doesn’t have that harsh sunscreen smell that some sprays do, so it’s easy to reapply throughout the day without feeling like you’re coating yourself in fragrance.
In terms of finish, it’s not completely non greasy, but it’s also not overly heavy. I would call it slightly greasy, but noticeably less so than most sunscreen sprays I’ve tried. It gives a bit of a glow without feeling suffocating on the skin.
One of my favorite things about this product is the spray itself. The mist is very fine and even, which makes application quick and easy without leaving blotchy spots.
Overall, it’s a solid option if you want a convenient SPF mist that feels lighter than most, smells good, and doesn’t leave your skin feeling dried out.
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Glowing face with sun protection. No fuss, no muss!
Item Package Quantity: 1
Wow, I love this stuff. It does make your skin hydrated and glow with health while protecting it from the sun. No shiny oil, just glow, and best of all, no need to mess up your makeup reapplying sunscreen. You can use it to set your makeup for extra protection (I still use sunscreen under makeup). The mist comes out so fine and even, no drips or glob. The scent is light and fades quickly. The best I've dried out of all the other brands.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Lightweight and glowy
Item Package Quantity: 1
I’ve been using the Naked Sundays SPF 50 Hydrating Sunscreen, and it’s quickly become a staple — especially for long days outside and on the tennis court. The texture is lightweight and smooth, and it blends in beautifully without leaving a white cast or greasy feel.
What I love most is the finish: it gives a natural, healthy glow without looking shiny or heavy. It layers really well under makeup and doesn’t pill, even when I’m reapplying throughout the day. I also appreciate how hydrating it feels without clogging pores or causing breakouts.
Performance-wise, it holds up well during activity and sweating (which matters for me during matches). The packaging is easy to toss in a tennis bag for quick reapplication.
If I had to note one thing, it’s slightly pricier than drugstore options — but the quality and wearability make it worth it.
Best for: everyday wear, outdoor sports, and anyone wanting high SPF protection with a comfortable, skin-like finish. Would absolutely repurchase.
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Reviewed in the United States on March 17, 2026
★★★★★ 1
Stings! Waste of money! Doesn’t accept returns!
Item Package Quantity: 1
Very disappointed with this spray sunscreen.
Although I’m usually not sensitive to sunscreens or face creams in general, this product made my eyes burn and tear up so much and so fast that I’m not able to use it. Such a waste. I even tried applying while covering just my eyes to avoid that area and it still stings. And it also goes on greasy, definitely not cute glowy looking. It is not a flattering shine. For the price I’m very disappointed and even upset that I didn’t notice before buying that you cannot return it. Don’t waste your money.
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Reviewed in the United States on June 6, 2026