Long Venturi: SFR, SMR, SSR, SXR
A blast nozzle accelerates the air and abrasive as the mixture exits
the end of the hose. The taper and length of the nozzle's inlet and
outlet determine the pattern and velocity of the abrasive exiting the
nozzle. The composition of the liner material determines its resistance
to wear.
Requirements for Operation
Nozzles are sized by the diameter
of their orifices in 1/16-inch increments. A No. 2 nozzle has a
2/16-inch (1/8-inch) orifice, a No. 3 nozzle has a 3/16-inch orifice,
etc. The size of the nozzle orifice determines abrasive and air
consumption. Air consumption is measured in cubic feet per minute (cfm)
at a given pressure.
When choosing a nozzle, consider the amount of available air in cfm,
the capacity of the blast machine and the inside diameter of the
piping, and the blast and air hoses. For optimal performance, these
elements must be compatibly sized.
If too large a nozzle is used, low blast pressure and rapid wear on the
blast hose will occur. If too small a nozzle is used, smooth media flow
will be difficult to achieve.
Description of Operation
The operator inserts the nozzle washer into a contractor-thread nozzle
holder and screws in the nozzle, turning it by hand, until it seats
firmly against the washer.
With all related equipment correctly assembled and tested, the operator
points the nozzle at the surface to be cleaned and presses the remote
control handle to begin blasting. The operator holds the nozzle 18 to
36 inches from the surface and moves it smoothly at a rate that
produces the desired cleanliness. Each pass should overlap slightly.
The operator must replace the nozzle once the orifice wears 1/16-inch beyond its original size.
Advantages
- Expected life with expendable abrasives is up to 500 hours
- Durable urethane jacket
- Non-binding contractor threads
- 42% lighter than tungsten carbide
Nozzle Stock Number, Dimensions and Weights
| |
Model No.
|
Stock No.
|
Orfice ID
|
Length
|
Net Wt.
|
Pkg'd Wt.
|
| Flanged |
SFR-6 |
4732 |
3/8" |
7-5/8" |
1 lb |
1.5 lb |
| SFR-7 |
4733 |
7/16" |
8-3/8" |
1.1 lb |
1.5 lb |
| SFR-8 |
4734 |
1/2" |
9-3/8" |
1.3 lb |
1.5 lb |
| Contractor Thread |
SMR-3 |
4538 |
3/16" |
5" |
.60 lb |
1 lb |
| SMR-4 |
4539 |
1/4" |
6" |
.70 lb |
1 lb |
| SMR-5 |
4540 |
5/16" |
6-3/8" |
.90 lb |
1 lb |
| SMR-6 |
4541 |
3/8" |
7-3/8" |
1 lb |
1.5 lb |
| SMR-7 |
4542 |
7/16" |
8-9/16" |
1.1 lb |
1.5 lb |
| SMR-8 |
4543 |
1/2" |
9-3/8" |
1.3 lb |
1.5 lb |
| Fine 1-1/4" Thread |
SSR-3 |
4702 |
3/16" |
4-3/4" |
.50 lb |
1 lb |
| SSR-4 |
4703 |
1/4" |
6" |
.70 lb |
1 lb |
| SSR-5 |
4704 |
5/16" |
6-7/16" |
.70 lb |
1 lb |
| SSR-6 |
4705 |
3/8" |
7-3/8" |
.90 lb |
1.5 lb |
| SSR-7 |
4706 |
7/16" |
8-7/16" |
1.1 lb |
1.5 lb |
| SSR-8 |
4707 |
1/2" |
9-9/16" |
1.2 lb |
1.5 lb |
| Contractor Thread |
SXR-6 |
4601 |
3/8" |
6-13/16" |
1 lb |
1.5 lb |
| SXR-7 |
4602 |
7/16" |
8-1/16" |
1.1 lb |
1.5 lb |
| SXR-8 |
4503 |
1/2" |
9-3/16" |
1.3 lb |
1.5 lb |
Available Literature:
21978 - Metal-Jacketed, Silicon Carbide-Lined
21979 - Urethane-Jacketed, Silicon Carbide-Lined
21986 - Metal-Jacketed, Tungsten Carbide-Lined
23414 - Rubber-Jacketed, Tungsten Carbide-Lined
24184 - Metal-Jacketed, Boron Carbide-Lined
24185 - Metal-Jacketed, Tungsten Carbide-Lined CT Series
