Saf-T-Cart 502-16FW Firewall Cylinder Cart

The Saf-T-Cart 502-16FW carries an oxygen cylinder and an acetylene cylinder with a steel firewall between them, held by a permaclamp, on 16 in pneumatic tires. Saf-T-Cart designs it for construction sites, with a lockable toolbox and hose wraps.

Pick the build:

• Standard (502-16FW): Saf-T-Cart lists cylinder capacity as 9-1/2 in and 12-1/2 in diameter.
• 8-1/2 in acetylene (502-16FW-SM): a smaller permaclamp for 8-1/2 in acetylene cylinders (Saf-T-Cart's catalog); Saf-T-Cart's firewall page names Medium #4 and Large #5 acetylene tanks for the -SM.
• 8-1/2 in acetylene with flat-free tires (502-16FW-SM-FF): the -SM on flat-free tires.

The photos show the standard build. How to check your cylinders.

Specification	Value
Baseplate	23-1/2 in x 12 in on Saf-T-Cart's 2020 drawing (its product page lists 13 in x 24 in)
Height	60 in
Width	35 in
Length	23 in
Weight	Not confirmed: Saf-T-Cart's product page lists 69 lb, the same figure as its non-firewall 502-16, and its comparable firewall carts weigh about 120 lb
Wheels	Two 16 in x 4 in pneumatic tires (Saf-T-Cart SC-11B), 390 lb rating each (flat-free tires on the -SM-FF)
Cylinder hold-down	One permaclamp, per Saf-T-Cart's drawing and photo
Cylinder capacity	Standard build 9-1/2 in and 12-1/2 in diameter; see the -SM above
Storage	Lockable toolbox and hose wraps

Why the firewall: OSHA requires oxygen cylinders in storage to be kept 20 ft from fuel-gas cylinders and combustible materials, or separated from them by a noncombustible barrier at least 5 ft high with a fire-resistance rating of at least half an hour (OSHA 1910.253(b)(4)(iii)). Saf-T-Cart states its firewalls are at least 60 in tall, block the line of sight between the oxygen and fuel-gas cylinders and carry a 30-minute burn rating, and says its firewall carts meet and exceed OSHA 1910.253. When a firewall cart is the right call: the firewall requirement. How separation works in a shop or on a jobsite: gas cylinder storage guide.

Choosing between pneumatic tires and steel wheels: which wheels for your floor.

Built to order by Saf-T-Cart, typically ships in 10 to 15 business days. Dimension drawings from Saf-T-Cart: 502-16FW (PDF). Compare our other cylinder carts.