Stihl SR-450 w/ULV Nozzle

The Stihl SR450 backpack mister with our own added-on ULV (ultra low volume) nozzle for use in controlling flying insects such as houseflies, small grain moths, gnats, and mosquitoes.  This nozzle is machined from a solid cylinder of Delrin-type plastic that is unaffected by solvents, weak acids and bases, heat or cold.  The nozzle has two parts which attach by machine-type threads so that you can adjust the spray volume and the droplet size.  With oil-based insecticides the nozzle is screwed down so that only a very thin partial cone of fog comes out.  This will give you a droplet in the 5-30 micron range which will hang in the air and vaporize.  This is a relatively lightweight backpack fogger with a two and a half gallon tank for the fog.  It also has a easy to use valve on the arm to turn off the flow to the nozzle without affecting the motor (so you can walk along with the motor idling but not lose any fog).  We use these machines regularly to fog the inside of two-story high rise egg laying chicken houses and dairy barns.  This nozzle will work well with both oil based and water based insecticides.

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SR 450 General Info

Ideal for distributing liquid or solid insecticides, fertilizers or herbicides, the STIHL SR 450 easily converts from misting to dusting applications without special tools or additional equipment. A larger and more powerful engine provides a wider spray range that is 20% greater than previous models, taking 20% less time to spray the same area depending on the application.

The STIHL SR 450 Backpack Sprayer is powered by a low-emission, fuel-efficient engine and comes equipped with a large fuel tank, allowing for longer run times during use. Built for efficient operation, the SR 450's one-hand control handle includes engine controls as well as product feed controls, allowing for superior command during use, and air speed can be easily adjusted during use for greater application and less product waste. The SR 450 can also convert to a backpack blower for debris cleanup.

Standard Features:

• Larger and more powerful engine that provides a larger spray range as compared to previous models
• Low-emission (meets/exceeds EPA minimum emission standards)
• Fuel-efficient engine and large fuel tank offer long run times
• Easily-converts from misting to dusting applications without special tools or additional equipment
• More powerful than the STIHL SR 420
• Anti-vibration system reduces fatigue
• One-hand control handle includes engine controls and the product feed controls
• Air speed can be adjusted on the fly for greater application control and reducing product waste
• Simplified three-step starting procedure
• View standard features common to all STIHL blowers

Optional Accessories:

• Pressure Pump Kit (w/ULV Nozzle Set)
• Set of ULV Nozzles

SR 450 Backpack Sprayer/Duster
DISPLACEMENT	63.3cc (3.86 cu. in.)
POWER	2.8 kW (3.9 bhp)
WEIGHT	12.5 kg (27.6 Ibs.)
FUEL CAPACITY	1700 cc (57.5 oz.)
CONTAINER CAPACITY	14.0 l (3.7 gals.)
AIR VOLUME (with tube)	920 m3/h (542 cfm)
AIR VELOCITY	90 m/sec. (201 mph)
SPRAY RANGE (IDEAL CONDITIONS)
Vert.:	13 m (43 ft)
Horiz.:	14.5 m (48ft)
Powerful backpack sprayer that easily converts from liquid to granular applications.

 

Get the best of both worlds with the professional use SR 420 backpack blower and sprayer. Designed with a larger, more powerful engine for increased spray range, this multi-task tool is great for clearing debris or spraying insecticide, fertilizer or herbicides— even watering. Providing all the power and convenience you need for excellent professional sprayer coverage.

Stihl SR-420 Manual

Standard Features:

• Larger more powerful engine for increased spray range
• Swivel air tube elbow for directional control of spray
• Built-in tool holder
• Adjustable straps

Optional Accessories:

• Metering pump kit
• Dusting and granulate-spreading attachment
• Ultra-low volume jet kit

 

SR 420 Backpack Blower/Sprayer
DISPLACEMENT	56.5 cc (3.44 cu. in.)
ENGINE POWER	2.6 kW (3.5 bhp)
WEIGHT	11.1 kg (24.5 Ibs.)
FUEL CAPACITY	1500 cc (50.7 oz.)
CONTAINER CAPACITY	14.0 l (3.7 gals.)
AIR VOLUME
With tube:	750 m3/h (441 cfm)
Without tube:	1260 m3/h (742 cfm)
AIR VELOCITY	101 m/sec. (226 mph)
SPRAY RANGE (IDEAL CONDITIONS)
Vert.:	11.5 m (38 ft.)
Horiz.:	12 m (40 ft.)
SOUND PRESSURE RATING	75 dB(A) Measured per ANSI B175.2
A powerful backpack sprayer for professional use.