SF-SB275 Standard BC Dry Chemical Fire Extinguisher — Compact, Coast Guard-Approved Protection for Flammable Liquid and Electrical Hazards
The Strike First SF-SB275 is a 2.75 lb. BC dry chemical portable fire extinguisher engineered for professional use in environments where flammable liquids, gases, and energized electrical equipment present fire risk. With a UL/ULC 10-B:C rating and U.S. Coast Guard approval (Type B:C Size I), it meets the demands of contractors, tradespeople, and facility managers who require a compact, code-compliant unit. Built to ANSI/UL 299, ANSI/UL 711, CAN/ULC-S504, CAN/ULC-S508, and NFPA 10 standards, the SF-SB275 is suitable for vehicle-mounted or fixed-wall applications. Strike First has been manufacturing fire equipment for over 35 years, and this unit carries a 6-year warranty.
Technical Specifications
| Specification | Details |
|---|---|
| Model | SF-SB275 |
| Capacity | 2.75 lbs. (1.25 kgs.) |
| UL/ULC Rating | 10-B:C |
| U.S.C.G. Approval | Type B:C Size I |
| Fire Class | Class B (flammable liquids and gases), Class C (electrical equipment) |
| Range | 8–10 ft (2.5–3 m) |
| Discharge Time | 9 sec. |
| Operating Pressure (PSI) | 150 |
| Temperature Range | -65°F to 120°F (-54°C to 49°C) |
| Height | 15 1/4" (39 cm) |
| Width | 3 3/4" (9.5 cm) |
| Diameter | 3 1/8" (8 cm) |
| Weight | 4 3/4 lbs. (2.2 kgs.) |
| Cylinder | Steel |
| Finish | Super durable polyester powder paint with superior corrosion resistance |
| Gauge | Waterproof stainless steel |
| Handle | Reinforced, full grip hardcoat anodized aluminum |
| Valve Body | Modified universal — accepts both pin or fork wall hooks |
| Pull Pin | Oversized with retaining strap |
| Labels | Color and bar coded for accurate service |
| Standard Bracket | Vehicle |
| Chrome Option | Yes |
| Approval | UL Listed, ULC Listed |
| Standards | ANSI/UL 299, ANSI/UL 711, CAN/ULC-S504, CAN/ULC-S508, NFPA 10 |
| D.O.T. Requirements | Meets D.O.T. Requirements |
| Warranty | 6 Year |
BC Dry Chemical Model Comparison
| Specification | SF-SB275 | SF-SB5 | SF-SB10 | SF-SB20 |
|---|---|---|---|---|
| Capacity | 2.75 lbs | 5 lbs | 10 lbs | 20 lbs |
| UL/ULC Rating | 10-B:C | 10-B:C | 60-B:C | 80-B:C |
| U.S.C.G. Approval | Type B:C Size I | Type B:C Size I | Type B:C Size II | Type B:C Size III |
| Range | 8–10 ft (2.5–3 m) | 8–10 ft (2.5–3 m) | 10–15 ft (3–4.5 m) | 10–15 ft (3–4.5 m) |
| Discharge Time | 9 sec | 13 sec | 15 sec | 28 sec |
| PSI | 150 | 195 | 235 | 235 |
| Height | 15 1/4" (39 cm) | 15 1/4" (39 cm) | 21 1/4" (54 cm) | 24" (61 cm) |
| Width | 3 3/4" (9.5 cm) | 6 3/4" (17 cm) | 8" (20.3 cm) | 9 1/2" (24 cm) |
| Diameter | 3 1/8" (8 cm) | 4 1/4" (11 cm) | 5 1/8" (13 cm) | 7 1/8" (18 cm) |
| Weight | 4 3/4 lb (2.2 kg) | 10 1/2 lb (4.8 kg) | 19 1/4 lb (8.8 kg) | 35 1/4 lb (16.1 kg) |
| Chrome Option | Yes | — | Yes | — |
| Standard Bracket | Vehicle | Wall or Vehicle / Marine | Wall / VB | Wall / VB |
| Optional Brackets | Wall, UP2 | UP-DB, UB5, UB5-DB, UP5-MD, HDVB-1 | UP-10MD, HDVB-2 | HDVB-3 |
The SF-SB275 stands out among compact BC extinguishers through its modified universal valve body — compatible with both pin and fork wall hooks — and its oversized pull pin with retaining strap, which enables faster activation under stress. The hardcoat anodized aluminum handle and polyester powder coat finish deliver durability that holds up in harsh jobsite and vehicle environments where lesser units corrode or degrade.
Key Features & Benefits
Modified Universal Valve Body
The valve body accepts both pin and fork wall hook mounting styles, giving contractors flexibility when specifying brackets for different vehicle or wall configurations. This eliminates the need to source a separate extinguisher model for different mounting setups on the same jobsite.
Hardcoat Anodized Aluminum Handle
The reinforced, full-grip hardcoat anodized aluminum handle provides a secure, ergonomic hold even with gloved hands. This construction resists wear and corrosion over the extinguisher's service life, maintaining reliable operation when it matters most.
Waterproof Stainless Steel Gauge
The stainless steel gauge is waterproof, making it suitable for marine, outdoor, and vehicle-mounted applications where moisture exposure is routine. Contractors can verify charge status at a glance without concern for gauge degradation from the elements.
Super Durable Polyester Powder Paint Finish
The powder coat finish provides superior corrosion resistance compared to standard paint finishes, extending service life in demanding environments. This is particularly valuable for units mounted in vehicles, on equipment, or in outdoor storage areas.
Oversized Pull Pin with Retaining Strap
The oversized pull pin with retaining strap is designed for easier and faster activation in emergency situations. Faster deployment can be critical in the first seconds of a fire event, especially for contractors working alone or in confined spaces.
Color and Bar Coded Labels
Color and bar coded labels support accurate service and inspection tracking, simplifying compliance with NFPA 10 maintenance requirements. This reduces the risk of service errors and helps contractors maintain proper documentation for inspections.
Wide Temperature Range
Rated from -65°F to 120°F (-54°C to 49°C), the SF-SB275 remains operational across extreme temperature conditions encountered in northern climates, cold storage facilities, and hot outdoor worksites. This range ensures the unit is ready to perform regardless of seasonal or environmental conditions.
Common Applications
Service and Work Vehicles
The SF-SB275 ships with a vehicle bracket and is U.S. Coast Guard approved, making it a direct fit for trucks, vans, and service vehicles operated by contractors and tradespeople. Its compact size allows mounting without sacrificing cab or cargo space.
Marine Vessels
U.S.C.G. approval (Type B:C Size I) qualifies the SF-SB275 for use aboard boats and marine vessels where flammable fuel and electrical fire risks are present. The waterproof gauge and corrosion-resistant finish support reliable performance in marine environments.
Manufacturing Facilities
Strike First BC dry chemical extinguishers are specifically designed for manufacturing environments where flammable liquids, gases, and electrical equipment are in use. The SF-SB275's compact footprint allows placement at multiple points throughout a facility.
Electrical Equipment Areas
Class C rating makes the SF-SB275 appropriate for use near energized electrical panels, control cabinets, and powered machinery. Dry chemical agent does not conduct electricity, making it safe to apply on live electrical fires.
Flammable Liquid Storage and Handling
The 10-B:C UL/ULC rating addresses fires involving flammable liquids and gases, covering common jobsite hazards such as fuel, solvents, and compressed gas. The 8–10 ft discharge range allows operators to engage a fire from a safe standoff distance.
Compatible Materials
- Flammable liquids (Class B fires)
- Flammable gases (Class B fires)
- Energized electrical equipment (Class C fires)
Product Documents
Frequently Asked Questions
Q: What fire classes does the SF-SB275 cover?
A: The SF-SB275 is rated for Class B fires (flammable liquids and gases) and Class C fires (electrical equipment). It is not rated for Class A fires involving ordinary combustibles such as wood or paper.
Q: Is the SF-SB275 approved for use on boats and marine vessels?
A: Yes. The SF-SB275 carries U.S. Coast Guard approval as Type B:C Size I, making it suitable for marine applications. The waterproof stainless steel gauge and corrosion-resistant finish further support marine use.
Q: What bracket options are available for the SF-SB275?
A: The SF-SB275 includes a standard vehicle bracket. Optional wall mounting brackets (including the UP2) are also available. The modified universal valve body accepts both pin and fork wall hook styles.
Q: What standards does the SF-SB275 meet?
A: The SF-SB275 meets or exceeds ANSI/UL 299, ANSI/UL 711, CAN/ULC-S504, CAN/ULC-S508, and NFPA 10. It also meets D.O.T. requirements and is UL Listed and ULC Listed.
Q: What is the operating temperature range?
A: The SF-SB275 is rated for use from -65°F to 120°F (-54°C to 49°C), covering extreme cold and hot environments encountered across North American jobsites and seasons.
Q: Is a chrome finish available for the SF-SB275?
A: Yes. A chrome finish option is available for the SF-SB275 model.