Catalina Cylinders · PRODUCT GUIDECatalina Cylinders S40 Review
Research checked · Not scored
Review
Manufacturer information and review searches have been checked. No eligible independent overall rating was verified, so this product remains unscored.
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The S40 is Catalina’s narrower 5.8-litre aluminium scuba cylinder, with a listed air capacity of 40 cubic feet at 207 bar. At 133.4 mm diameter and 645 mm cylinder length, it has very different proportions from an S80. Its size can be useful for a separately rigged cylinder where the required gas volume has been established.
Consider before buying
Catalina lists a 7.3 kg cylinder weight and buoyancy of -1.5 lb full, rising to +0.7 lb at 500 psi. Valve, regulator and rigging affect the assembled result. A smaller cylinder is not automatically adequate as an emergency supply; capacity must come from the dive plan. Confirm markings and acceptance with the filling provider.
Our take
Choose S40 when its dimensions and capacity fit the planned role, then check how the complete assembly hangs and can be accessed. Compare S80 if considerably more gas is required. Independent searches found buoyancy discussions but no eligible exact-model overall rating. An incorrect logo image has been removed; an official S40 photograph still needs verification.
Specifications at a glance
- Equipment type
- Scuba cylinder
- Material
- 6061 aluminium
- Water capacity
- 5.8 L
- Air capacity
- 40 cu ft / 1132 L
- Service pressure
- 3000 psi / 207 bar
- Dimensions
- 133.4 mm diameter × 645 mm length
- Cylinder weight
- 7.3 kg
- Listed buoyancy
- -1.5 lb full; +0.7 lb at 500 psi; +1.4 lb empty
Compare an alternative
A closer look at S40
Editorial profile written
Facts listed by the source
- Listed weight
- N/A
- Listed dimensions
- N/A
Options in a listing may refer to different variants. Confirm the exact version and package before ordering.
Questions to settle before buying
Based on the equipment type in the researched profile.
- Which cylinder, valve and connection specifications apply to this exact item?
- Will your local fill and inspection provider accept this configuration?
- What documentation and service history are available?
Explore the related equipment section →
What still needs checking
Independent review coverage and model updates still need ongoing research.
We have not yet added independent review evidence for this entry. Manufacturer claims do not establish long-term reliability, value or a performance score.
Where this research comes from
Read the source ↗ · Open the product listing ↗
Exact product name and URL in manufacturer feed · cached source, collected 2026-10-02 · Catalogue audit 2026-10-02.
Source matching and feature extraction are automated. An editorial profile, independent review and hands-on test are separate things; none is implied by this audit.
