INST 22 - Aclamp Pressure Gauge Checker


232 bar high pressure contents indicator with push-button relief valve.

Attaches to cross flow valve to determine cylinder pressure. For surface use only.

Delivery, Returns & Instore Collection

When will I receive my order?

International Delivery Times

Monday – Friday 3 – 5 Working Days

UK Mainland Delivery Times

Monday – Friday before 2pm Next Working Day
Monday – Friday after 2pm 2 Working Days
Saturday & Sunday 2 Working Days

UK Extended Areas Delivery Times

Monday – Sunday 3 – 5 Working Days

Please note delivery times may be extended during busy periods.

EU Areas

Please note that due to changes by HMRC, orders being shipped to EU countries will not be shipped on the same day as they are invoiced. EU Orders will now be shipped on the next working day. This only applies to E.U. orders. Domestic and Worldwide shipments remain the same.

Collect In Store?

When you go to the online checkout, you can opt to collect your items in store. We'll let you know when your order is ready for you to collect. Your order will normally be ready to collect the next working day.

Returns, refunds or exchanges?

You can return any item within 28 days of receipt for a refund, provided the item is unused, in its original packaging and in 'as new' condition.

Items will be refunded in full (less postage) if received within 28 days from the date of despatch.


We aim to deal with all returns and exchanges on the day they arrive, however please allow longer during peak periods.

You can return the item(s) by dropping them off in store or by returning the item(s) by post. We do not insist on a specific courier service for the return, so please use the most economical or appropriate method for returning the item(s).

Northern Diver (Int) Ltd
Appley Lane North
Appley Bridge

If an item becomes faulty after a period of time then please contact customer services (01257 254 444 or prior to returning the item. We will either repair or replace the item at our discretion.

Tell Us What You Think

Customer Reviews

5 out of 5 Stars (1 reviews)

Write a Review

Extremely Useful and Very Professional

By Kathy Jones on 25 Jun. 2016

This is such a useful product and it is now an essential part of my dive kit. Easy and quick to read gauge, very easy to use, exceptionally smooth operation and does not vent too much dive cylinder air during purging, like some other units I have previously tried. Saves having to attach or re-attach your regs to check your cylinder pressure and it looks super professional too. Extremely well made, as you would expect from Northern Diver dive equipment and I am so impressed that I may well pick up at least another one of these, as I think it would make a superb Christmas gift for the diver in your life that has everything.. I went for the DIN version, as all of my diving cylinders are DIN but my usual dive buddy has a cylinder that is pure A-Clamp (not DIN convertible), so with hindsight, the A-Clamp version might be the most universal if you are thinking of one for the club..

Trade Customers

Northern Diver offers trade accounts to commercial organisations and to those who work in or around water. Please click here to register your details and find out if you qualify. Once your trade account has been confirmed you can view all trade prices and shop easily online when logged into your account. Please note when you are not logged in to your trade account retail prices are shown. If you have any queries please do not hesitate to contact us. Tel: +44 (0) 1257 25 44 44.