Tungsten Carbide Lined Metal Jacketed Long and Short Venturi

Short Venturi: CJD
Long Venturi: CSD, TXD, SDX, CXD

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.


  • Rugged and durable aluminum jacket.
  • Tungsten carbide is the most rugged and durable liner material and provides the best value.
  • Expected wear-life when blasting with expendable abrasives is approximately 300 hours.
  • TXD nozzles with large contractor threads eliminate galling or binding of the threads in the holder
  • CXD nozzles provide smooth transition from 1-1/4-inch blast hose to the 1-1/4-inch entry for users who prefer 1-1/4-inch fine thread nozzles.

Replacement Parts

For flanged nozzle use coupling lock-springs

Nozzle Stock Number, Dimensions, and Weights

Model No.
Stock No.
Orfice ID
Net Wt.
Pkg’d Wt.
Fine 1-1/4″ ThreadCJD-313783/16”3-1/8″.70 lb1 lb
CJD-413791/4″3-1/8″.70 lb1 lb
CJD-513805/16″3-1/8″.70 lb1 lb
CJD-613813/8″3-1/8″.80 lb1 lb
CJD-713827/16″3-1/8″.80 lb1 lb
CJD-813831/2″3-1/8″.90 lb1 lb
Fine 1-1/4″ ThreadCSD-313843/16″4-1/4″1.1 lb1.5 lb
CSD-413851/4″5-3/8″1.3 lb1.5 lb
CSD-513865/16″5-3/4″1.3 lb1.5 lb
CSD-613873/8″6-3/4″1.6 lb2 lb
CSD-713887/16″8″2 lb2 lb
CSD-813891/2″9″2.4 lb2.5 lb
Fine 1-1/4″ ThreadCXD-6234603/8”6-3/4”1.6 lb2 lb
CXD-7234617/16”8”2 lb2 lb
CXD-8234621/2”9”2.5 lb2.5 lb
Contractor ThreadTXD-6991473/8″6-3/4″1.9 lb2 lb
TXD-7991487/16″8″2 lb2.5 lb
TXD-8991491/2″9-9/16″2 lb2.5 lb
FlangedSDX-613943/8″6-3/4″2.2 lb3 lb
SDX-713957/16″8-3/4″2.2 lb3 lb
SDX-813961/2″9-3/16″2.4 lb3 lb
SDX-1013975/8″9-3/16″2.8 lb3.5 lb
SDX-1213983/4″9″2.9 lb3.5 lb

Find a Distributor

Have questions about Clemco equipment or would like to purchase specific products? Contact the authorized Clemco distributor near you to find out more.