20 lb. Standard Dry Chemical Portable Fire Extinguisher - BC

SF-SB20 20 lb. Standard BC Dry Chemical Portable Fire Extinguisher — Heavy-Duty Protection for Class B & C Fires

The Strike First SF-SB20 is a 20 lb. regular BC dry chemical portable fire extinguisher engineered for demanding commercial and industrial environments. Rated 80-B:C by UL/ULC and U.S.C.G. approved as Type B:C Size III, it is purpose-built to suppress flammable liquid, gas, and electrical equipment fires. With a 28-second discharge time and a 10–15 ft. throw range, it delivers sustained suppression capacity suited to manufacturing facilities, marine applications, and vehicle fleets. Strike First has been manufacturing fire equipment for over 35 years, and this unit meets or exceeds ANSI/UL 299, ANSI/UL 711, CAN/ULC-S504, and CAN/ULC-S508 standards.

Technical Specifications

Available Sizes — BC Regular Dry Chemical Line

The SF-SB20 stands apart from lighter-capacity alternatives with its 80-B:C UL/ULC rating and 28-second discharge time, providing significantly greater suppression capacity for high-risk commercial and industrial settings. Its U.S.C.G. approval and broad bracket compatibility — including wall and vehicle/marine mounting — make it one of the most versatile units in the Strike First BC line. The extreme temperature rating of -65°F to 120°F ensures reliable performance across environments where lesser extinguishers may fail.

Key Features & Benefits

Modified Universal Valve Body

The modified universal valve body accepts both pin and fork wall hooks, giving contractors and facility managers flexibility in how and where the unit is mounted. This reduces the need for specialized hardware and simplifies installation across varied site conditions.

Super Durable Polyester Powder Paint Finish

The steel cylinder is finished with a super durable polyester powder paint that provides superior corrosion resistance. For contractors working in harsh outdoor, marine, or industrial environments, this finish extends service life and maintains compliance-ready appearance over time.

Waterproof Stainless Steel Gauge

The waterproof stainless steel pressure gauge ensures accurate pressure readings even in wet or high-humidity conditions. Reliable gauge readability is critical for routine inspections and NFPA 10 compliance checks.

Reinforced Full-Grip Hardcoat Anodized Aluminum Handle

The handle is reinforced and features a full-grip hardcoat anodized aluminum construction for durability and secure handling under stress. In an emergency, a confident grip can be the difference between effective deployment and fumbling with the unit.

Oversized Pull Pin with Retaining Strap

The oversized pull pin with retaining strap is designed for easier and faster activation, reducing the time between grabbing the extinguisher and discharging agent. Faster activation is critical in the first seconds of a fire event.

Color and Bar Coded Labels

Color and bar coded labels support accurate service and inspection tracking. This feature simplifies compliance recordkeeping for facilities subject to regular fire safety audits.

Common Applications

Manufacturing Facilities

The SF-SB20 is specifically designed for manufacturing environments where flammable liquids, gases, and electrical equipment present concurrent fire risks. Its 80-B:C rating and 28-second discharge time provide the suppression capacity needed for larger industrial spaces.

Marine and Vessel Use

U.S.C.G. approval (Type B:C Size III) and wall/vehicle/marine bracket compatibility make this extinguisher suitable for installation aboard commercial vessels and marine equipment. The waterproof gauge and corrosion-resistant finish support reliable performance in saltwater environments.

Commercial Vehicle Fleets

The vehicle bracket compatibility and D.O.T. compliance make the SF-SB20 appropriate for mounting in large commercial vehicles, trucks, and heavy equipment cabs. Its extreme temperature range ensures readiness in both cold-climate and hot-weather fleet operations.

Electrical Equipment Areas

Rated for Class C fires, this extinguisher is suited for areas with energized electrical equipment such as switchgear rooms, generator enclosures, and control panels. Dry chemical agent suppresses electrical fires without conducting electricity back to the operator.

Flammable Liquid and Gas Storage

With an 80-B:C rating, the SF-SB20 is effective against Class B fires involving flammable liquids and gases. It is appropriate for fuel storage areas, loading docks, and chemical handling zones.

Compatible Materials

• Flammable liquids (Class B fires)
• Flammable gases (Class B fires)
• Energized electrical equipment (Class C fires)

Product Documents

• Strike First BC Dry Chemical Product Sheet (EN, Feb 2024)

Frequently Asked Questions

Q: What fire classes does the SF-SB20 cover?
A: The SF-SB20 is rated for Class B fires (flammable liquids and gases) and Class C fires (energized electrical equipment). It carries a UL/ULC rating of 80-B:C.

Q: Is the SF-SB20 approved for marine use?
A: Yes. The SF-SB20 holds U.S.C.G. approval as Type B:C Size III, and the bracket listed on the label includes marine/vehicle mounting options.

Q: What is the operating temperature range?
A: The SF-SB20 is rated for use from -65°F to 120°F (-54°C to 49°C), making it suitable for extreme cold and hot environments.

Q: Does the SF-SB20 comply with NFPA 10?
A: Yes. The unit complies with NFPA 10 Standard for Portable Fire Extinguishers, as stated in the product datasheet.

Q: What mounting options are available for the SF-SB20?
A: The SF-SB20 comes with a standard Wall / VB (Vehicle/Marine) bracket. The modified universal valve body also accepts both pin and fork wall hooks for flexible installation.

Q: What is the warranty on the SF-SB20?
A: Strike First provides a 6-year warranty on the SF-SB20.