The National Diving & Activity Centre

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Notice of NDAC Chepstow site closure

The National Diving & Activity Centre (NDAC) Chepstow site is permanently closed.

We’d like to thank all our customers for their support over the years.

Notice of site closure

The National Diving & Activity Centre is permanently closed. We are not taking bookings for leisure activities or public diving.

We’d like to thank all our customers for their support over the years.

Activities & Events

Site Facilities

Diving Information

Centre Information

National Diving & Activity Centre
NP16 7LQ

NDAC Servicing
Chepstow's National Diving & Activity Centre is an AquaLung and APEKS Premier Service Centre

NDAC Dive Equipment Servicing

Coronavirus Update for Scuba Diving Equipment Servicing

The National Diving & Activity Centre is currently closed for all equipment servicing. This is due to the restrictions on movement and the protection of customers and staff team during the Coronavirus outbreak.

All booked-in scuba equipment servicing will be completed when the current restrictions are lifted.

We will keep customers informed via our website and social media as further information is released.

We would like to say a huge thank you for your continued custom and understanding during these difficult times for our country. We look forward to seeing you all again in the near future.

If you have any servicing enquiries, please contact us via email on . We are working from home, but will advise the best we can.

Keep safe and look after each other.

Ashley & Nat

Price List>

Regular servicing of your scuba equipment is very important to ensure safe, reliable performance and to ensure your expensive kit has a long life. Diving regulators should be serviced at regular intervals depending on time and the amount of use they have. Cylinders have test dates and are subject to regulations, if your cylinder is out of date or in poor condition most air fill stations will refuse to fill it.


Do you ever wonder why your servicing takes so long to get back from the dive shop – often because it is farmed out to another servicing centre to do the work and that’s why it takes ages for your kit to be returned... Well not any more!

SITAIDESTUKASAquaLung Apeks Premier Service Centre

The National Diving & Activity Centre has expanded its operation to offer you a far better service, with its own '“in house' servicing and testing station.

The NDAC Servicing Centre is staffed by our own SITA / IDEST approved technicians with all technicians holding manufacture servicing certificates for an extensive range of Scuba equipment.

The National Diving & Activity Centre is also an Apeks and AquaLung Premier Service Centre.

The in-house technicians at the NDAC Servicing Centre, Ashley Bryce & Nat Taylor, are second to none and will ensure that your equipment is properly prepared for your underwater adventures before it leaves our servicing centre.

All Gauges used for cylinder testing at NDAC are calibrated by a UKAS accredited test house.

Planning for a dive trip?

We would strongly recommend that you have your dive equipment serviced well in advance of your dive trip or holiday, and that you use it prior to departing on your trip. Regulators in particular can require a final tweak in adjustment to achieve optimum performance – that’s great as we have our very own inland dive site to ensure you are totally 100% happy with your kit and that is has been serviced to your satisfaction and specifications.

Service turn around times - no longer a problem!

Unlike most other servicing centres, NDAC Servicing offers a number of services designed to suit you as the customer. Serviced equipment is normally available for return to the customer within 7 - 14 working days. However, this time may increase if parts are unavailable or if demand for servicing is unusually high during the peak seasons of the dive calendar.

We are therefore offering you the diver, a fast track turn around service. At a small extra cost of £15.00 per item we will be happy to service your SCUABA equipment over night. No more missed dives because your neck seal ripped, or your BDC inflate failed.

Services available at NADC

Regulator Servicing

We are able to service your regulators on site here at the NDAC. Fast turnarounds apply as detailed above. Just bring your regs into the service bay and we will be able to tell you how quickly we can have them back to you. prices>

Cylinder testing and servicing

Hydro tests, Visual inspection, Internal shot blast cleaning, O2cleaning service, Valves and manifolds serviced. prices>

Buoyancy Compensators

B.C.D's, Wings, ABLJ's, Genereal Buoyancy aids. Please contact us for prices>

Dry Suit repairs, neoprene wet suits , membranes and water sports suits.

Zip replacement, Neck & Wrist seal replacement, Suit pressure testing for Leaks, patching repairs and Boot changes, along with general repairs & modifications. Drysuits that are with us for repair will be sent to a 3rd party to carry out the work. prices>

Computer Battery Replacement

For most make of dive computer and many watches we are able to change the battery and pressure test the unit the same day. This is with the exception of first generation UWATEC dive computers. In the event you have a UWATEC we are happy to act as agents and send it off to Scubapro on your behalf. prices>


Below is our servicing price list, if you have a specific enquiry relating to servicing that is not listed below please contact us or phone the centre on 01291 630 046.

On site fast track servicing for an overnight service costs £15.00 per item.

Special rates are available for clubs, Please contact us for prices>

Prices as of from Dec 2020

drysuit repairs


Test Inspection


Hole Patch / Leak repair

£20.00 ea

Wrist Seals (Latex)


Wrist Seals (Neoprene)


Neck Seal (Latex)


Neck seal (Neoprene)


Ankle Seals (Latex)


Socks (Latex)


Zip rear


Zip Front


Boots for drysuit




It may be possible to repair neck and wrist seals on the same day but this will depend on the daily work load of the servicing centre that may vary from day to day.

regulator service


1st & 2nd Stage
Labour Only. Parts charged extra dependent on model


Additional 2nd Stage - Octopus
Labour Only. Parts charged extra dependent on model


1st Stage Only
Labour Only. Parts charged extra dependent on model


O2 Service



Price based on standard service kit extra parts will incur a further charge.
Most makes of regulator are serviced please contact us for a price.


cylinder servicing


Hydrostatic Test
Including fill


Visual Test
Including air fill


Internal Shot Blast in conjunction with test


Internal Shot Blast


O2 Clean per cylinder


Twin-set O2 Clean


Twin set dismantle & re-assemble


Manifold Leak Repair


Failed Cylinder


Service Parts as required


NDAC Stickers
(with test or clean)



All cylinders will have any existing stickers removed as part of the testing standards. There will be a charge to replace unless you wish to provide your own.


dive computer battery replacement


Suunto Mosquito


Suunto D4 / D4i / D6 / D6i / D9 / D9tx / DX


Suunto Companion / Favor / EON / Sol


Suunto Spyder / Stinger


Suunto Cobra / Gekko / HelO2 / Vyper / Vyper 2 / Vyper Air / Vytec / Zoop


Suunto Transmitter


Aladdin Pro Ultra / Air / Air L / Air Z / Smart Z / MK2 / Pro

*Plus Postage

Mares Nemo


Beuchat / Cressi / Oceanic /Scubapro & Others
Most models can be serviced, price on request


Servicing that has been booked in at the shop will be returned within 7-14 days unless a manufactures guidance is required on technical components