Standard Barrels
D/F Water-Cooled MIG Barrel - Direct Mount

Standard Barrels
(7/16"-3/4" Gas Cup ID)

Overview Ordering Manuals &
Drawings
Accessories

Overview

The Water-Cooled Direct Mount Machine Barrel is designed to be mounted directly to the wire feed drive. It may also be remotely mounted for automatic welding applications with optional accessories.

The model NCM has a current capacity 400 amps in argon shielding. These accommodate slip-in current tips fastened by a collet action nut. The wire diameter range with hard wire is .030” through 1/16”, .035” through 1/8” with cored wire, and .035” through 3/32” with aluminum.

The barrel model HTM has a current capacity range of up to 500 amperes. Ratings will be contingent on the combination of current tip and shielding gas to be used. The model HTM employs threaded CuCrZr (copper chromium zirconium) current tips and will accommodate .030” through 1/16” hard wire, .035” through 1/8” cored wire and 3/64” through 3/32” aluminum wire.

The D/F torch is famous for the fact, that if it is chilled properly, the welder can grab the chrome front water-cooled barrel (not the copper gas nozzle/cup) of the torch with their bare hand and it will be cold to the touch seconds after welding. With the proper chiller, this can be done even after a 4 hour arc time. Make certain the cooling water supply is at least the minimum flow rate of 1 gallon per minute (for each inner body), at 40 psi (80 psi maximum) with a 6 gallon reservoir and a recommended 30,000 BTU/hr cooling capacity. Gun ratings are affected by shielding gas used, arc time, cooling time and inlet water temperature. Water outlet temperature should not exceed 27°C (80°F). The torch’s water out & power cable is not cooled until the coolant has gone through the torch and out the water out & power cable. If water is not flowing through the D/F torch for at least 1 minute prior to striking an arc, when you apply the power and water hits the “hot” water/out & power cable, you will generate steam. Steam can damage the torches internals in seconds causing a leak. It can also blow out the torches water/out & power cable. A flow switch can be installed after the return line ensuring that coolant is present at the return line prior to striking an arc. When High-Deposition GMAW, high current density, high amperages, preheat, or extended periods of arc time are used, a refrigerated liquid chiller with a larger reservoir is required. Precise temperature control maintains the cooling at a constant 13°C (55°F) temperature, thus prolonging the life of the welding equipment and more specifically extending the service life of the gas nozzle and current tip. D/F Machine Specialties does not manufacture or sell chillers, we only recommend them. Click here to see our recommended chillers.

Each D/F Machine Specialties welding gun is fully assembled and ready to install. In order to make the installation complete, the code number, wire size, wire feeder make/model (Lincoln wire feeders, Miller wire feeders, Tweco wire feeders, ESAB wire feeders, & EURO Quick Disconnect wire feeders), and inlet (as needed) must be specified when ordering. If special welding tools or accessories other than those listed previously are required, please consult with the factory. Get the right feeder adapter connection to fit your MIG wire feeder.

Features

  • Water-Cooled Inner Body & Nozzle
  • Small Frontal Area for Hard-to-Reach Locations
  • Nozzle Length Extended by Applying One of Three (3) Different-Length Water-Cooled Nozzle Assemblies

Model Explanation

  • NCM - Normal Duty, Collet Action (Slip-in Tip), Machine Barrel
  • HTM - Heavy Duty, Threaded Tip, Machine Barrel

Model Specifications

MODEL CURRENT
CAPACITY
WEIGHT (APPROX.) COOLING REQUIRED RECOMMENDED WIRE
DIA. RANGE
INSTRUCTION
MANUAL
NCM 400 amps 2.5 lbs 3 quarts/min .035"-3/32",
3/64"-3/32" AL
550
HTM 500 amps 2.5 lbs 3 quarts/min .035"-3/32",
3/64"-3/32" AL

Barrel Dimensions

MODEL LENGTH W/ 3" NOZZLE LENGTH W/ 4" NOZZLE LENGTH W/ 5" NOZZLE DIAMETER OF W/C NOZZLE DIAMETER OF BODY HOUSING
NCM, HTM 9.25" 10.25" 11.25" 1.125" 1.625"

Ordering Information

Complete Barrel Only

DESCRIPTION CODE NO.
Model NCM (Slip-in Tip) Code No.
Short 3" W/C Nozzle 11601
Inter. 4" W/C Nozzle 11602
Long 5" W/C Nozzle 11603
Model HTM (Threaded Tip) Code No.
Short 3" W/C Nozzle 11611
Inter. 4" W/C Nozzle 11612
Long 5" W/C Nozzle 11613

Complete Assemblies

DESCRIPTION CODE NO.
Model NCM (Slip-in Tip) 2 Ft. 3 Ft. 4 Ft. 5 Ft. 6 Ft. 7 Ft. 8 Ft.
Short 3" W/C Nozzle 17097 17100 17103 17106 17109 17112 17115
Inter. 4" W/C Nozzle 17098 17101 17104 17107 17110 17113 17116
Long 5" W/C Nozzle 17099 17102 17105 17108 17111 17114 17117
Model HTM (Threaded Tip) 3 Ft. 2 Ft. 4 Ft. 5 Ft. 6 Ft. 7 Ft. 8 Ft.
Short 3" W/C Nozzle 17445 17118 17121 17124 17127 17130 17133
Inter. 4" W/C Nozzle 17446 17119 17122 17125 17128 17131 17134
Long 5" W/C Nozzle 17447 17120 17123 17126 17129 17132 17135

Manuals & Downloads

Instruction Manuals

TORCH MODELS DOWNLOAD
NCM, HTM 550

CAD Files & Drawings

TORCH MODELS CODE NO. CAD FILE PDF DRAWING
NCM 3" 17100 17100 17100
HTM 3" 17118 17118 17118
NCM 4" 17101 17101 17101
HTM 4" 17119 17119 17119
NCM 5" 17102 17102 17102
HTM 5" 17120 17120 17120
Note: CAD Models are the same for different length utilties
Example: 17100 (3Ft. NCM 3") represents the same model as the 17115 (8Ft. NCM 3")

Other Documents

DESCRIPTION DOWNLOAD
Torch Connection Options
W/C Direct Mount MIG Torches
One-Sheet

Utility Station #45196

45196 Utility StationThe D/F Utility Station is required for all D/F torch installations. Typical modern torch setups utilize a unitized cable assembly with a power pin. D/F torches take an alternative approach to the setup. The torches use a separate gas hose, water-in hose, Water Out & Power Cable, and casing/conduit. When one cable goes bad it is simply replaced instead of attaching an entire new unitized cable assembly; a huge cost saver! This is also where the D/F Utility Station comes into play. The gas hose, water-in hose, and Water Out & Power Cable are interfaced with the customer's existing lines via the Utility Station. The D/F torch leads plug into the front (see right) of the Utility Station. Into the back (see below) of the Utility Station go the customer's utilities. Read more on the D/F Utility Station product page.

For more information on proper use of the D/F Utility Station, and to see the various torch connection options, please download the Torch Connection Options one-sheet.

D/F Utility Station #45196D/F Utility Station #45196

Series A Barrels
D/F Water-Cooled MIG Barrel - Direct Mount

Series A High Capacity Barrels
(11/16"-1" Gas Cup ID)

Overview Ordering Manuals &
Drawings
Accessories

Overview

The NCM-A/HTM-A (Series A) high capacity direct mount barrels are for nonferrous and ferrous welding applications where a higher capacity nozzle is required.

The barrel models NCM-A (slip-in contact tip) and HTM-A (threaded contact tip) have the larger diameter water-cooled nozzle front end (1.445” outside diameter). These models have a current capacity range of up to 500 amperes. They are recommended for higher speeds, longer duty cycles, and larger diameter wire where more gas coverage is needed. The larger front end utilizes gas cups with an inner diameter from 11/16” to 1”.

The D/F torch is famous for the fact, that if it is chilled properly, the welder can grab the chrome front water-cooled barrel (not the copper gas nozzle/cup) of the torch with their bare hand and it will be cold to the touch seconds after welding. With the proper chiller, this can be done even after a 4 hour arc time. Make certain the cooling water supply is at least the minimum flow rate of 1 gallon per minute (for each inner body), at 40 psi (80 psi maximum) with a 6 gallon reservoir and a recommended 30,000 BTU/hr cooling capacity. Gun ratings are affected by shielding gas used, arc time, cooling time and inlet water temperature. Water outlet temperature should not exceed 27°C (80°F). The torch’s water out & power cable is not cooled until the coolant has gone through the torch and out the water out & power cable. If water is not flowing through the D/F torch for at least 1 minute prior to striking an arc, when you apply the power and water hits the “hot” water/out & power cable, you will generate steam. Steam can damage the torches internals in seconds causing a leak. It can also blow out the torches water/out & power cable. A flow switch can be installed after the return line ensuring that coolant is present at the return line prior to striking an arc. When High-Deposition GMAW, high current density, high amperages, preheat, or extended periods of arc time are used, a refrigerated liquid chiller with a larger reservoir is required. Precise temperature control maintains the cooling at a constant 13°C (55°F) temperature, thus prolonging the life of the welding equipment and more specifically extending the service life of the gas nozzle and current tip. D/F Machine Specialties does not manufacture or sell chillers, we only recommend them. Click here to see our recommended chillers.

Each D/F Machine Specialties welding gun is fully assembled and ready to install. In order to make the installation complete, the code number, wire size, wire feeder make/model (Lincoln wire feeders, Miller wire feeders, Tweco wire feeders, ESAB wire feeders, & EURO Quick Disconnect wire feeders), and inlet (as needed) must be specified when ordering. If special welding tools or accessories other than those listed previously are required, please consult with the factory. Get the right feeder adapter connection to fit your MIG wire feeder.

Features

  • Water-Cooled Inner Body & Nozzle
  • Large Frontal Area for Increased Gas Coverage
  • Nozzle Length may be Extended by Applying One of Three (3) Different-Length Water-Cooled Nozzle Assemblies

Model Explanation

  • NCM-A - Normal Duty, Collet Action (Slip-in Tip), Machine Barrel - High Capacity (Series A)
  • HTM-A - Heavy Duty, Threaded Tip, Machine Barrel - High Capacity (Series A)

Model Specifications

MODEL CURRENT
CAPACITY
WEIGHT (APPROX.) COOLING REQUIRED RECOMMENDED WIRE
DIA. RANGE
INSTRUCTION
MANUAL
NCM-A 400 amps 2.4-4.5 lbs 3 quarts/min .030"-3/32",
3/64"-3/32" AL
589
HTM-A 500 amps 2.4-4.5 lbs 3 quarts/min .030"-3/32",
3/64"-3/32" AL

Barrel Dimensions

MODEL LENGTH W/ 3" NOZZLE LENGTH W/ 4" NOZZLE DIAMETER OF W/C NOZZLE DIAMETER OF BODY HOUSING
NCM, HTM 7.25" 8.25" 1.445" 1.625"

Ordering Information

Complete Barrel Only

DESCRIPTION CODE NO.
Model NCM-A (Slip-in Tip) Code No.
Short 3" W/C Nozzle 18796
Inter. 4" W/C Nozzle 18798
Model HTM-A (Threaded Tip) Code No.
Short 3" W/C Nozzle 18797
Inter. 4" W/C Nozzle 18799

Complete Assemblies

DESCRIPTION CODE NO.
Model NCM-A (Slip-in Tip) 2 Ft. 3 Ft. 4 Ft. 5 Ft. 6 Ft. 7 Ft. 8 Ft. 10 Ft. 12 Ft. 15 Ft.
Short A3" W/C Nozzle 17470 17471 17472 17473 17474 17475 17476 17477 17478 17479
Inter. A4" W/C Nozzle 17491 17492 17493 17494 17495 17496 17497 17498 17499 17500
Model HTM-A (Threaded Tip) 2 Ft. 3 Ft. 4 Ft. 5 Ft. 6 Ft. 7 Ft. 8 Ft. 10 Ft. 12 Ft. 15 Ft.
Short 3" W/C Nozzle 17481 17482 17483 17484 17485 17486 17487 17488 17489 17490
Inter. 4" W/C Nozzle 17502 17503 17504 17505 17506 17507 17508 17509 17510 17511

Manuals & Downloads

Instruction Manuals

TORCH MODELS DOWNLOAD
NCM, HTM 589

CAD Files & Drawings

TORCH MODELS CODE NO. CAD FILE PDF DRAWING
NCM 3" 18796 18796 18796
HTM 3" 18797 18797 18797
NCM 4" 18798 18798 18798
HTM 4" 18799 18799 18799
Note: CAD Models are the same for different length utilties
Example: 18796 (A3") represents the same model as the 17473 (5Ft. NCM A3")

Other Documents

DESCRIPTION DOWNLOAD
Torch Connection Options
W/C Direct Mount MIG Torches
One-Sheet

Utility Station #45196

45196 Utility StationThe D/F Utility Station is required for all D/F torch installations. Typical modern torch setups utilize a unitized cable assembly with a power pin. D/F torches take an alternative approach to the setup. The torches use a separate gas hose, water-in hose, Water Out & Power Cable, and casing/conduit. When one cable goes bad it is simply replaced instead of attaching an entire new unitized cable assembly; a huge cost saver! This is also where the D/F Utility Station comes into play. The gas hose, water-in hose, and Water Out & Power Cable are interfaced with the customer's existing lines via the Utility Station. The D/F torch leads plug into the front (see right) of the Utility Station. Into the back (see below) of the Utility Station go the customer's utilities. Read more on the D/F Utility Station product page.

For more information on proper use of the D/F Utility Station, and to see the various torch connection options, please download the Torch Connection Options one-sheet.

D/F Utility Station #45196D/F Utility Station #45196