Surface-use-only valves only need to be tested every five years (a full, hydrostatic test). If your valve has a pre-fitted gauge like the one pictured below, then you have a 'Surface use only' bottle. Most dive centres can offer a full hydrostatic test from around £40.00 Inc VAT.
Those bottle with valves which could be used underwater for diving - regardless of whether they are or not - need to be tested every two-and-a-half years. There will be no guage on the side of the valve in this instance. It will be in-line.
Surface only bottles will often last a very long time as they do not suffer from any salt corrosion.
Information on refilling services for Air Cylinders, Air Bottles and Dive Bottles in Carlisle, Cumbria. For use with Pre Charged Pneumatic (PCP) air guns and paintball guns.
For the professional charging of 300BAR air cylinders, please visit:
System Hydraulics Ltd.
Unit 1, Crown Street
Prices from £6.00 Inc VAT - Dependant on size of cylinder.
Filled on site - 1 hour service subject to availability.
*Air cylinders must be in test and are filled at the discretion of the filler.
Prices are accurate at the time of writing but are subject to change.
An alternative to using 300BAR cylinders are high pressure stirrup pumps. We supply FX 3 and 4 stage pumps. All our pumps include a 5 year manufacturers warranty.
Your bottle must be 'in test'.
We stock 7ltr 300BAR cylinders complete with airgun valve, gauge, kevlar hose and 1/8 BSP fittings. £199.00 Inc Vat