Please see our delivery page for more information on potential delays caused by Royal Mail strikes.

Fernox Powerflow Flux 350g

By Fernox Product code: 21961 Pack size: Each

£13.28 Exc. VAT £11.07
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Product Details

A soft, white paste which is easily applied to jointing areas prior to soldering. It is designed for the soldering of copper plumbing systems and is suitable for use with a wide range of metals and alloys. It contains no zinc oxide.

• Self cleaning
• Easy to application
• Effective soldering flux
• Suitable for both lead containing and lead free solder alloys
• WRAS – Approved Product

Technical Specification
Brand Fernox
Manufacturer ID 20436
Safety Data Sheet click here
Weight (g) 350
Type Solders & Fluxes
Pack Size 1
Delivery details

Please be aware that Royal Mail strikes on 30th September and 1st October may cause a slight delay in our usual delivery timescales. We’ll do everything we can to try to avoid any impacts to our service, and apologise in advance if you experience delays receiving your order.

We recommend placing orders as early as possible, to avoid delivery delays. Alternatively, please use our Click & Collect service or visit your local store to buy your items.


DELIVERY OPTIONS (UK mainland only)

Next Day Delivery – £5.00 or FREE for orders over £25

  • Order before 9pm Monday to Thursday for next business day delivery
  • Order Friday to Sunday before 5pm for Monday delivery
  • Orders placed after Sunday at 5pm will be delivered the following Tuesday
Pre-12pm Delivery – £10.00 to arrive before 12pm on the scheduled days above
Saturday Delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 6pm Friday)
Sunday delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 4pm Saturday)
Times may vary for items being delivered directly from the supplier. For more information, please visit our delivery information page below.
Items over 30kg can only be delivered from Monday to Friday. If ordered before 6pm, please allow up to two business days for delivery. Orders placed after 6pm Thursday will be delivered after the weekend.
More about Delivery
Click & Collect details

Collection Details

Our opening times are 7am-8pm Monday-Friday, 7am-6pm Saturday and 9-4pm Sunday. Please check your local store is open on the store locator page, before you visit.

Once you have placed your order online, we’ll have it ready for you at the store you have selected in as little as 5 minutes. We will hold your order for 14 days, after which we will automatically generate a refund to the payment type you used to place the order.

Don’t forget your mobile number – Make sure your mobile number is added so that we can text you when your order is ready to collect. Please wait for your text or email before coming to collect your items.

If an item is eligible for Next Business Day Collection in store, the order must be placed by 9pm Monday to Thursday for collection the next day. Orders placed after 9pm on Thursday, and up to 5pm on Sunday, will be available for collection on Monday. For larger items over 30kg, please allow two business days.

Reviews
Fernox Powerflow Flux 350g is rated 4.8 out of 5 by 8.
Rated 5 out of 5 by from Best there is The only flux to use in my opinion
Date published: 2022-08-21
Rated 5 out of 5 by from Used for 30 + years, Used for 30+ years, don’t taste very nice though.
Date published: 2021-12-16
Rated 5 out of 5 by from My go to flux Simply clean area and fitting, apply flux and heat and you will get a perfect solder joint.
Date published: 2021-10-27
Rated 5 out of 5 by from best copper tube flux on the market I have been using this for a number of years with no problems since experiencing another well known make actually eating through the pipe and causing water leaks if not cleaned off. I would not use anything else.
Date published: 2021-07-29
Rated 3 out of 5 by from Half full Does it’s job though tubs recently are almost half full
Date published: 2021-07-18
Rated 5 out of 5 by from Reliable Used daily. Tried and tested over several years
Date published: 2020-07-05
Rated 5 out of 5 by from Works well. I haven’t used this brand before (for flux). I quite like it. It has a consistency a bit like cemolina - a slightly wet constancy. Compared to my usual brand which is more like Vaseline. It has been working well and I would say that the post soldering residue is less messy that my normal brand. So I will use it again. The tub is too big to have a useable brush in the lid. I have been using a small paint brush and that’s been fine.
Date published: 2020-03-31
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