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Small tank, serious convenience

The Field Spirit 13ci high pressure air tank is all about staying light and low-profile. With 0.21 litres of capacity charged to 3000psi in a bottle just around 25cm long and roughly 570g with the regulator, it is one of the smallest HPA cylinders on the market, perfect as a lightweight primary or a discreet secondary in a slim skirmish rig.

Regulated and ready

An integrated regulator steps the stored 3000psi down to a steady 800psi output, the smooth supply an HPA engine needs to shoot to a consistent velocity, and a fitted gauge lets you keep an eye on remaining air. It arrives ready to connect to your HPA line and play.

Strong where it counts

Built from aluminium around a steel core, the bottle balances low weight with the strength and rigidity a pressure vessel demands. It is Pi (TPED) approved to EN ISO 7866, UK spec, with a 5 year hydrostatic retest cycle so you can fill it with confidence.

Fill and run it safely

Charge with compressed air only, never CO2, and never exceed the 3000psi working pressure. Because capacity is small, keep a fill source handy for longer games. Complete your HPA setup with lines and gas from our BBs, gas and batteries range and browse more airsoft accessories.

General
BrandField
ColourBlack
Dimensions
LengthApprox. 25cm with regulator
Other
Capacity0.21 litres / 13ci
Regulator output800psi
GaugeFitted
MaterialAluminium with steel core
CertificationPi approved, EN ISO 7866
TypeHPA compressed air tank with regulator
Working pressure3000psi / 200 bar
DiameterApprox. 5cm
Weight (bottle only)Approx. 320g
Weight (with regulator)Approx. 570g
RegulatorIncluded
Retest cycle5 years
Fill mediumCompressed air only

Frequently asked questions

How compact is the 13ci tank?

Very. At around 25cm long, 5cm in diameter and roughly 570g with the regulator, it is one of the smallest HPA bottles available, ideal for a lightweight primary or a discreet secondary tank in a slim rig.

Does it come with a regulator?

Yes. It ships with an integrated regulator delivering a stable 800psi output from the 3000psi stored air, plus a fitted gauge so it is ready to run out of the box.

Compressed air or CO2?

Compressed air only, up to 3000psi. Never fill an HPA cylinder with CO2, and never exceed the stated working pressure. Use a filling source rated for HPA.

How many shots will 13ci give?

As a small-capacity bottle it is best for shorter engagements, backup use or players who prioritise a slim, light setup. Exact shot count depends on your engine tune and rate of fire, so carry a fill source for longer games.

What does Pi approved and 5 year retest mean?

Pi (TPED) approval to EN ISO 7866 certifies the bottle and regulator as a transportable pressure vessel. It must be hydrostatically retested every 5 years to remain legal and safe to fill.