Fine bubble high performance air diffusers. Semi flexible diffuser construction 300cm long 32mm diameter. Maximum recommended air flowrate is 10 cubic metres of air per hour. Materials of construction are plastic with 316 stainless steel end fittings, aslo fitted with non return valve in diffuser. Diffuser contains its own internal fused silica bead ballast. End fittings are 1/2" acetyl plastic as standard.

The Dryden Air diffuser is the leading air diffuser used in UK aquaculture, treatment of leachate water on landfill sites, sewerage treatment and numerous other applications.
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AFM grade 1 filtration media

AFM (Advanced Filtration Media) grade 1 is the standard sized AFM media equivalent to 16 x 30 grade sand. M

Supplied in 25kg sacks, grade 1 particle size 0.5mm to 1.10mm. Media should be used on top of a layer of grade 2 AFM.

Price is per 25kg sack
(For bulk quantities and dealer prices please contact us directly at aqua@drydenaqua.com )
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Oxygen standard probe

High performance, very robust galvanic oxygen probe for the measurment of dissolved oxygen in water, waste water and air. Completely sealed internals, so there is no risk of insulation failure, heavy duty Sub Sea cable, high mv out-put 6.5 mv to approx 1mg/l dissolved oxygen. Ideal probe for the Dryden Aqua, AquaTraul system or your own oxygen monitors such as multichannel or stand-alone PLC based systems.

The probe is supplied with 5 meters of cable (alternative lengths available), pack of 5 membranes and 50ml of electrolyte.
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Ozone detector card

Ozone detector card, each card can take five measurements of ozone and five cards are supplied with the pack. The card will measure ozone levels in air from 10ppb to 105ppb, this is the important range over which human health, respiratory and allergic reactions may be initiated. The card is intended as an indicator to help protect the young, elderly, people with respiratory or allergic reactions as well as the active sports person that does not want to be exposed to pollution while enjoying excercise in towns or on the top of a mountain.

The card is also important as a personnel monitor in industry and in the office, where laser printers and photocopiers and other machines all produce ozone. The legal limit in the UK for 8 hour exposure is presently set at 100ppb, any level above this concentration is un-acceptable and illegal in the work-place.
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ET120 linear air blower

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standard float LR03 switch 10m cable

This is a standard general purpose low cost float switch. The cable is PVC. A pivot point weight can be added to the cable if required.

The float switch is rated for 240v ac 10 amp inductive load,

The float switch can switch small pumps on and off directly, however it possible it is always best to use a low control voltage which is used to activate a remote relay. The remote relay can then switch heavy loads such as pumps on or off.
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Aquaculture | Water Technology | Environmental Products.....delivered worldwide

DIN standard commercial filters 2.5 bar

dry1 | Pressure sand filters, cartridge and bag filters | Commercial GRP filers 1.2m to 2.4m diam | DIN standard commercial filters 2.5 bar

800mm diameter AFM or sand filter, DN80

Ref: 5.4.229

Price: £5,343.00 / €6,945.90 (Excluding VAT at 17.5%)

A heavy duty GRP filter constructed strictly according to norms DIN 19643 and DIN 19605. The calculations of wall thickness according to AD Merkblatt N1, bed depth up to 1.7m. The units are fitted with sight glasses with internal light. Manhole access covers 600mm diameter. Maximum working pressure 2.5bar, Higher pressures 4bar and 6bar are available on request

AFM grade 3 = 100kg
AFM grade 2 = 100kg
AFM grade 1 = 400kg

If sand filter media is used increase the aboveweights by 10%
more information

Related products:

1. AFM grade 1 filtration media (Ref: 5.1.00.10)

1.0m diameter AFM or sand filter DN100

Ref: 5.4.230

Price: £6,347.00 / €8,251.10 (Excluding VAT at 17.5%)

A heavy duty GRP filter constructed strictly according to norms DIN 19643 and DIN 19605. The calculations of wall thickness according to AD Merkblatt N1, bed depth up to 1.7m. The units are fitted with sight glasses with internal light. Manhole access covers 600mm diameter. Maximum working pressure 2.5bar, Higher pressures 4bar and 6bar are available on request

AFM grade 3 = 100kg
AFM grade 2 = 200kg
AFM grade 1 = 825kg

If sand filter media is used increase the aboveweights by 10%
more information

Related products:

1. AFM grade 1 filtration media (Ref: 5.1.00.10)

1.2m diameter AFM or sand filter DN125

Ref: 5.4.231

Price: £7,612.00 / €9,895.60 (Excluding VAT at 17.5%)

A heavy duty GRP filter constructed strictly according to norms DIN 19643 and DIN 19605. The calculations of wall thickness according to AD Merkblatt N1, bed depth up to 1.7m. The units are fitted with sight glasses with internal light. Manhole access covers 600mm diameter. Maximum working pressure 2.5bar, Higher pressures 4bar and 6bar are available on request

AFM grade 3 = 200 kg
AFM grade 2 = 350 kg
AFM grade 1 = 1100 kg

If sand filter media is used increase the aboveweights by 10%
more information

Related products:

1. AFM grade 1 filtration media (Ref: 5.1.00.10)

1.4m diameter AFM or sand filter DN125

Ref: 5.4.232

Price: £9,427.00 / €12,255.10 (Excluding VAT at 17.5%)

A heavy duty GRP filter constructed strictly according to norms DIN 19643 and DIN 19605. The calculations of wall thickness according to AD Merkblatt N1, bed depth up to 1.7m. The units are fitted with sight glasses with internal light. Manhole access covers 600mm diameter. Maximum working pressure 2.5bar, Higher pressures 4bar and 6bar are available on request

AFM grade 3 = 300 kg
AFM grade 2 = 500 kg
AFM grade 1 = 1500 kg

If sand filter media is used increase the aboveweights by 10%
more iformation

Related products:

1. AFM grade 1 filtration media (Ref: 5.1.00.10)

1.6m diameter AFM or sand filter DN150

Ref: 5.4.233

Price: £11,473.00 / €14,914.90 (Excluding VAT at 17.5%)

A heavy duty GRP filter constructed strictly according to norms DIN 19643 and DIN 19605. The calculations of wall thickness according to AD Merkblatt N1, bed depth up to 1.7m. The units are fitted with sight glasses with internal light. Manhole access covers 600mm diameter. Maximum working pressure 2.5bar, Higher pressures 4bar and 6bar are available on request

AFM grade 3 = 350 kg
AFM grade 2 = 650 kg
AFM grade 1 = 2000 kg

If sand filter media is used increase the aboveweights by 10%
more information

Related products:

1. AFM grade 1 filtration media (Ref: 5.1.00.10)

1.8m diameter AFM or sand filter DN200

Ref: 5.4.234

Price: £12,881.00 / €16,745.30 (Excluding VAT at 17.5%)

A heavy duty GRP filter constructed strictly according to norms DIN 19643 and DIN 19605. The calculations of wall thickness according to AD Merkblatt N1, bed depth up to 1.7m. The units are fitted with sight glasses with internal light. Manhole access covers 600mm diameter. Maximum working pressure 2.5bar, Higher pressures 4bar and 6bar are available on request

AFM grade 3 = 400 kg
AFM grade 2 = 700 kg
AFM grade 1 = 2700 kg

If sand filter media is used increase the aboveweights by 10%
more information

Related products:

1. AFM grade 1 filtration media (Ref: 5.1.00.10)

2.0m diameter AFM or sand filter DN200

Ref: 5.4.235

Price: £17,226.00 / €22,393.80 (Excluding VAT at 17.5%)

A heavy duty GRP filter constructed strictly according to norms DIN 19643 and DIN 19605. The calculations of wall thickness according to AD Merkblatt N1, bed depth up to 1.7m. The units are fitted with sight glasses with internal light. Manhole access covers 600mm diameter. Maximum working pressure 2.5bar, Higher pressures 4bar and 6bar are available on request

AFM grade 3 = 500 kg
AFM grade 2 = 800 kg
AFM grade 1 = 3500 kg

If sand filter media is used increase the aboveweights by 10%
more information

Related products:

1. AFM grade 1 filtration media (Ref: 5.1.00.10)

2.2m diameter AFM or sand filter DN200

Ref: 5.4.236

Price: £19,836.00 / €25,786.80 (Excluding VAT at 17.5%)

A heavy duty GRP filter constructed strictly according to norms DIN 19643 and DIN 19605. The calculations of wall thickness according to AD Merkblatt N1, bed depth up to 1.7m. The units are fitted with sight glasses with internal light. Manhole access covers 600mm diameter. Maximum working pressure 2.5bar, Higher pressures 4bar and 6bar are available on request

AFM grade 3 = 500 kg
AFM grade 2 = 900 kg
AFM grade 1 = 4300 kg

If sand filter media is used increase the aboveweights by 10%
more information

Related products:

1. AFM grade 1 filtration media (Ref: 5.1.00.10)

2.4m diameter AFM or sand filter DN250

Ref: 5.4.237

Price: £24,208.00 / €31,470.40 (Excluding VAT at 17.5%)

A heavy duty GRP filter constructed strictly according to norms DIN 19643 and DIN 19605. The calculations of wall thickness according to AD Merkblatt N1, bed depth up to 1.7m. The units are fitted with sight glasses with internal light. Manhole access covers 600mm diameter. Maximum working pressure 2.5bar, Higher pressures 4bar and 6bar are available on request

AFM grade 3 = 600 kg
AFM grade 2 = 1000 kg
AFM grade 1 = 5100 kg

If sand filter media is used increase the aboveweights by 10%
more information

Related products:

1. AFM grade 1 filtration media (Ref: 5.1.00.10)

2.8m diameter AFM or sand filter DN300

Ref: 5.4.239

Price: £29,215.00 / €37,979.50 (Excluding VAT at 17.5%)

A heavy duty GRP filter constructed strictly according to norms DIN 19643 and DIN 19605. The calculations of wall thickness according to AD Merkblatt N1, bed depth up to 1.7m. The units are fitted with sight glasses with internal light. Manhole access covers 600mm diameter. Maximum working pressure 2.5bar, Higher pressures 4bar and 6bar are available on request

AFM grade 3 = 1000 kg
AFM grade 2 = 2000 kg
AFM grade 1 = 6200 kg

If sand filter media is used increase the aboveweights by 10%
more information

Related products:

1. AFM grade 1 filtration media (Ref: 5.1.00.10)

3.0m diameter AFM or sand filter DN300

Ref: 5.4.238

Price: £30,245.00 / €39,318.50 (Excluding VAT at 17.5%)

A heavy duty GRP filter constructed strictly according to norms DIN 19643 and DIN 19605. The calculations of wall thickness according to AD Merkblatt N1, bed depth up to 1.7m. The units are fitted with sight glasses with internal light. Manhole access covers 600mm diameter. Maximum working pressure 2.5bar, Higher pressures 4bar and 6bar are available on request

AFM grade 3 = 1000 kg
AFM grade 2 = 2000 kg
AFM grade 1 = 7500 kg

If sand filter media is used increase the aboveweights by 10%
more information

Related products:

1. AFM grade 1 filtration media (Ref: 5.1.00.10)

dry1 > Pressure sand filters, cartridge and bag filters > Commercial GRP filers 1.2m to 2.4m diam > DIN standard commercial filters 2.5 bar

Prices shown are all ex-works Edinburgh Scotland