TMP Tungsten Carbide Lined Long Venturi
Blast nozzle with venturi shaped tungsten carbide liner and metal jacket. Thread size and entry dimensions vary with nozzle series.
Purpose
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. See the air and abrasive consumption chart on
the back of this page.
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, the blast and air hoses.
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 attaches the nozzle to the nozzle holder. Threaded nozzles require a holder with matching threads. CJD, CSD and CXD nozzles have 1-1/4-inch threads. TXD nozzles have Contractor threads (50 mm). Flange-style nozzles use a quickcoupling nozzle holder, which couples to most quick couplings. Clemco’s nylon quick couplings have built-in lock springs to keep the couplings from becoming uncoupled. If other couplings are used, the operator must install pins to secure the couplings.
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 at the appropriate distance and angle to the surface. The longer the nozzle, the greater the stand-off distance. The normal range for short-venturi nozzles is 12 to 18 inches. For long venturi nozzles, it is between 18 and 36 inches. The operator will determine the appropriate distance for the application.
The operator must check the nozzle and nozzle washer daily for damage or wear and replace as necessary. The nozzle should be replaced when the orifice wears 1/16-inch beyond its original size.
Advantages
- Short-venturi nozzles (TJP, TYP) designed for blasting 12 to 18 inches away from the surface.
- Long-venturi nozzles (TSP, TMP, TXP) allow high production blasting at a distance of 18 to 24 inches for hard- to-clean surfaces, and 30 to 36 inches for loose paint and soft surfaces
- Expected life with expendable abrasives is approximately 300 hours
- Durable natural rubber jacket
- 1-inch entry provides smooth transition and maximum productivity with 1-inch ID blast hose
- 1-1/4-inch entry ensures maximum productivity with 1-1/4-inch ID blast hose
Packaging: Boxed individually
| Model | Length | Washer | Thread | Enty | Jacket |
| TMP-3 | 4-1/4" | NW-25 | Contractor | 1" | Rubber |
| TMP-4 | 5-3/8" | NW-25 | Contractor | 1" | Rubber |
| TMP-5 | 5-3/4" | NW-25 | Contractor | 1" | Rubber |
| TMP-6 | 6-3/4" | NW-25 | Contractor | 1" | Rubber |
| TMP-7 | 8" | NW-25 | Contractor | 1" | Rubber |
| TMP-8 | 9" | NW-25 | Contractor | 1" | Rubber |
Note: Best performance is obtained when sizes of nozzle, blast machine piping, blast hose and air hose are properly matched.
• Cfm range is based on blasting at 100 psi for the life of the nozzle.
• Blast machine capacity should allow 20 to 30 minutes of blasting.
• Hose ID should be three to four times the size of the nozzle orifice.
Chart shows air consumption in cubic feet per minute (cfm), abrasive consumption in pounds per hour and cubic feet per hour for abrasives weighing 100 pounds per cubic foot, and compressor horsepower (hp) based on 4 to 4.5 cfm per horsepower.
NOTE: Figures may vary depending upon working conditions. To maintain desired air pressure as nozzle orifice wears, air consumption increases. The effects of nozzle
wear on air consumption must be considered when selecting nozzles and the compressors that support them.
When nozzle orifice is 3/8-inch or larger, blast machine valves and piping must be
1-1/4-inch or larger to provide sufficient air volume.