These Amerex water mist units are the ultimate extinguisher for Class A fires and where a potential Class C (electrical) hazard exists. The fine spray from the unique misting nozzle provides safety from electrical shock (honest!), greatly enhances the cooling and soaking characteristics of the agent and reduces scattering of the burning materials. Unequivocally the best extinguisher for protection of hospital environments, valuable books and documents, telecommunication facilities and clean room manufacturing facilities. These extinguishers are easy to use and less costly to maintain and service than many Halon alternatives.
These units are 100% non-magnetic including the pull pin and wall hanger and have been tested for use to 11.7 Tesla in MRI scanners, NMR machines and other strong magnetic fields (Note: insurance carriers may require non-magnetic extinguishers in these locations). Most folks prefer the Model B272NM (2.5 gallon) for its larger capacity and because it is Coast Guard rated when used with a rated bracket (the nameplate now reads B272CG, but it is still non-magnetic).
Technical note: The 2018 edition of NFPA 99 at 18.104.22.168 states "Nonferrous-type fire extinguishers shall be provided in MRI rooms and associated spaces." At 22.214.171.124 it further states "Clean agent or water-mist type fire extinguishers shall be provided in operating rooms" and in A.126.96.36.199. "Dry chemical fire extinguishers should not be provided in operating rooms. The clean agent extinguishers selected should have a Class A rating of some form." Finally, at 188.8.131.52 NFPA states "Clean agent-type fire extinguishers shall be provided in telecommunication entrance facilities and telecommunication equipment rooms.
These units ship empty and need to be charged with deionized water (purchase separately) and then pressurized with nitrogen gas (not air) using a refill adapter (also sold separately). When ordering water charges, keep in mind that water weighs about 8.34 lbs (3.78 kg) per gallon (3.75 liters), so a set of 2.5 gallon water charges weighs approximately 42 lb!
- 5 Year Manufacturer’s Warranty
- Stored Pressure Design
- Stainless Steel Cylinders
- Durable High Gloss Polyester Powder Paint
- All Metal Valve Construction
- Exclusive Crevice Free, Butt Welded Cylinder
- Non-toxic - Causes no Respiratory Problems
- De-ionized Water Extinguishing Agent (sold separately)
- Sanitary White Paint Finish (easy to clean); polished stainless steel by special order.
- No Powder Residue
- Wand Provides Greatest Operator Safety
- Large Loop Stainless Steel Pull Pin
- Maximum Visibility During Discharge
- No Electrical Conductivity Back to the Operator
- No Thermal or Static Shock
- Minimal Training - Simplest to use
- Most Economical Agent Available
- Bar Coded and Bi-lingual Labels
|Amerex Model #||B270NM||B272NM|
|Capacity||1.75 gallons (6.6 liters))||2.5 gallons (9.5 liters))|
|Shipping Weight (empty)||7 lb (3.2 kg)||8 lb (3.6 kg)|
|Height||19" (48 cm)||24.5" (62 cm)|
|Height w/ Hose Installed||24.5" (62 cm)||27.5" (70 cm)|
|Width||11" (28 cm)|
|Depth||7" (17.8 cm)|
|Discharge time||72 seconds||80 seconds|
|Discharge range||10 to 12 feet (3.0 to 3.7 m)|
|Operating temperature range||40 to 120 °F (4 to 49 °C)|
|Bracket Included||Non-magnetic wall|
|Coast Guard Approved||No||Yes|