Supplying Koi & Pond Enthusiasts With Confidence

1-2 Day UK Delivery From £3.79

Free when you spend over £49

Products Sourced Within The UK

99% of Products Manufactured In the UK

Expert Support & Guidance

Email: enquiries@eco-filtration.co.uk

Threaded Backnuts & Sealing Washers

  • 1.25" BSP Backnut (3 Pack)

    1.25″ BSP Backnut (3 Pack)

    £2.99
  • 1.25" BSP Backnut & Sealing Washer

    1.25″ BSP Backnut & Sealing Washer

    £2.15
  • 1.5" BSP Backnut (3 Pack)

    1.5″ BSP Backnut (3 Pack)

    £3.95
  • 1.5" BSP Backnut & Sealing Washer

    1.5″ BSP Backnut & Sealing Washer

    £2.55
  • 1" BSP Backnut (3 Pack)

    1″ BSP Backnut (3 Pack)

    £2.99
  • 1" BSP Backnut & Sealing Washer

    1″ BSP Backnut & Sealing Washer

    £1.95
  • Backnuts for Threaded Tank Connectors

    Backnuts for Threaded Tank Connectors

    Price range: £0.69 through £2.49
    This product has multiple variants. The options may be chosen on the product page
  • Threaded Retaining Nuts

    Threaded Retaining Nuts

    Price range: £0.69 through £0.99
    This product has multiple variants. The options may be chosen on the product page

Threaded Backnuts & Sealing Washers for Pond Pipework

Eco Filtration are UK manufacturers and suppliers of threaded back nuts for pipework and pond fittings. Available for immediate despatch.

Our Customer Reviews

Customer Satisfaction is Our Priority

Based on 196 reviews
93%
(183)
6%
(11)
0%
(0)
1%
(2)
0%
(0)
RAerated bottom drain

Fitted with low profile kit and easy to install .
Great company to do business with.

First

First class

Bottom drain (air)

Good service and good quality product

Great service

Great service, item easy to install, seems to be making a difference to the pond.

Quality

Quality and price

A Hard-to-find Part Sorted

Just whatI needed to connect my new pump to my existing pond filter pipework. A hard to find part, and at a reasonable price too.

Dealing with z number of pipes and hoses in metric and imperial sizes

Dealing with z number of pipes and hoses in metric and imperial sizes. Received great advice,

Great item

Great item, great advice from Sam on welding

A
3/8" Pipe Insert
Anonymous
Excellent service and quality

Arrived the next day. Very efficient easy to order. Thank you!

airline weighted feet

They work perfectly

Perforated hose

Excellent product! Exactly what I needed

A great company

Recently ordered some fish related equipment from this company and found it very easy from start to finish. I would use this company again.

Looks good so far.

Set up a week ago and the water is starting to look much clearer. Impressed so far.

Very pleased with

Very pleased with product

Nice and easy to install

Nice and easy to install, works well, more air when used with 2 outlets instead of 4. Great.

A
Philips UV Lamps
Anonymous
Philips lamps

Just as advertised

Hose is really nice quality

Hose is really nice quality. Order arrived quickly , perfect!

Great product great price fast delivery

Great product great price fast delivery.

Good quality product Great service 5

Good quality product Great service 5 star

Quality products

Quality products. Quick delivery.
Bone char carbon is the best water filter for ponds. Takes out all metals and chemicals.

Hosetail

Solid fit for purpose fitting.

Ozone

Have used this ozone purifier for many years and it definitely helps with water clarity and health

Perfect

These horsetail solvent tight and when connected to flexible hose with ptfe tape no leakes visible

t
1.5" Ball Valve
thomas kavanagh
1.5” ball valve

Definitely recommend this product perfect for the job at hand