TIG Welders

Invertig 313 AC/DC SMART Water-Cooled Package

Product # 601742000L

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The HTP America® Invertig 313 AC/DC runs on single-phase or 3-phase power from 208V to 240V and offers an outstanding duty-cycle for production applications using 3-phase power! With the Invertig 313 AC/DC, you can run the following processes: TIG (GTAW), Pulsed TIG (GTAW-P), Stick (SMAW), and Pulsed Stick (SMAW-P). The Invertig 313 features the same large LCD as the Pro Pulse™ 300 and the Invertig 400 AC/DC and also features an updated and intuitive software system, which makes parameter selection and setup a breeze.  This Invertig 313 has High Frequency start with the option to change to Lift-Arc Start when you work around sensitive electronics where high frequency is unwanted.

Planning to run this machine on single phase? Please let us know if you have less than 218 volts.

Smart Water Cooler Package

  • Only turns on when needed and stops the arc when it detects a low coolant level
  • The cooling fans blow directly into heat sinks and the circuit boards are protected from grinding dust and moisture by a special lacquer coating which makes the machine IP23
  • Cooling fans work on-demand; the fans only power up when cooling is required, reducing noise and eliminating unwanted grinding dust from being pulled into the machine while the machine is idling
  • 1 gallon coolant reservoir 
  • Custom cart to house the water cooler 

The complete Invertig 313 AC/DC water-cooled package available for purchase from our online store includes:

♦ Invertig 313 AC/DC Power Source
♦ Welding Cart
♦ Smart Water Cooler
♦ CK230 Series Water-Cooled TIG Torch*
♦ Foot Pedal*
♦ Flowmeter
♦ Gas Hose
♦ 1 Gallon of Coolant
♦ Ground Cable and Clamp Assembly*

*Upgrade options available, via drop down boxes above, for additional charges.

Warranty Information: The Invertig 313 welder (machine only) includes a 3 year warranty, the Smart water cooler has an 18 month warranty, and the TIG welding torches are warrantied for a period of 90 days against defects in material and workmanship. 


The Invertig 313 SHIPS to any business/commercial address with access to a forklift in the Contiguous United States (i.e., the lower 48) for a flat fee of $195. If you choose to ship the machine to your residence, accessorial fees will apply (a residential delivery fee, a lift-gate service fee, and possibly a limited access fee). Accessorial fees vary by ship to location and by freight carrier. You may place your order online, but you will be contacted by Customer Service to arrange and pay for any applicable accessorial fees. To avoid additional accessorial fees, we can also ship the machine to your nearest freight terminal, where the carrier will hold your machine for you to pick-up.

Also, if your ship to address is in Alaska, Guam, Hawaii, Puerto Rico, or any other U.S. Territory outside of the Contiguous United States, additional shipping charges will apply and accessorial fees may apply. You may still place your order online, but you will be contacted by Customer Service to arrange and pay for partial shipping along with any applicable accessorial fees.



Your truck freight shipment leaves our facility and is accepted by the freight carrier in good condition. The material becomes your property when signed for by the freight carrier. Our responsibility for the shipment ceases when signed for and removed from our facility by the freight carrier.

Inspect your shipment thoroughly as soon as received. If possible, unpack the shipment in the presence of the driver. If this is a "HOLD ON DOCK FOR PICK-UP" shipment, inspect the shipment prior to leaving the freight terminal. If you do not inspect the shipment for loss or damage prior to signing for and leaving the freight terminal with the shipment, then the freight carrier will claim that you damaged the shipment bringing it home. If you notice loss or damage, then you must note this on the freight bill.

We are willing to assist you in every possible manner in the collections of claims for loss or damage, but this willingness does not make us responsible for such collection of claims or replacement of materials.

Input Voltage 230V (208 to 240V) Single- or 3-Phase
Welding Current Single-Phase 4 to 300A
Welding Current 3-Phase 4 to 300A
Single-Phase Rated Output 40% @ 300A
230V Single-Phase Input Amps @ Rated Load 44A
3-Phase Rated Output 80% @ 300A
3-Phase Input Amps @ Rated Load 32A
Welding Modes Stick
TIG Spot
TIG Reset
Programmable Memories 30
Asymmetric Arc Yes
AC Frequency (Hz) 20 to 400 (Up to 100A)
20 to 200 (Over 100A)
AC Balance (%) 10 to 90
Pre-Flow (Seconds) 0.1 to 5.0
Post-Flow (Seconds) 0.1 to 99.9
Initial Amps (%) 10 to 90
Final Amps (%) 10 to 90
Slope Up (Seconds) 0.1 to 10.0
Slope Down (Seconds) 0.1 to 10.0
Spot Time (Seconds) 0.1 to 10.0
Hot Start (%) 0 to 50
Arc Force (%) 0 to 500
Wave Forms Soft Square
EN Amperage (%) 10 to 99
EP Amperage (%) 10 to 99
Duty-Cycle (Single-Phase TIG) 40% @ 300A
60% @ 250A
100% @ 200A
Duty-Cycle (3-Phase TIG) 80% @ 300A
100% @ 280A
Duty-Cycle (Single-Phase Stick) 35% @ 260A
60% @ 200A
100% @ 180A
Duty-Cycle (3-Phase Stick) 35% @ 300A
60% @ 240A
100% @ 200A
Dimensions (Length x Width x Height) 26-1/2" x 12-1/4" x 17-1/2"
Weight 117 Lbs.
Pulse Parameters
Pulses/Second (PPS) Stick AC & DC
Pulses/Second (PPS) TIG AC
Pulses/Second (PPS) TIG DC
Peak Time (%)
Background Amps (%)

0.4 to 5.0
0.4 to 10.0
0.4 to 999.9
10 to 90
10 to 90

CA Prop 65 - For Residents of California
Warning: Welding and cutting equipment, accessories, and fumes can expose you to chemicals, including Chromium (Hexavalent Compounds), Lead, and Nickel, which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information, please visit www.P65Warnings.ca.gov.
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Anthony M.
United States United States

My HTP 313 AC/DC Tig welder

Just recently purchased the HTP 313 AC/DC Tig welder with the smart water cooler system. I love this welder, heavy duty machine I do a lot of Aluminum welding with 3/8 to 1/2 inch materials and this welder can handle any work load you put on this machine. Excellent customer service. I received my welder the cooler was not working, so I contacted Jeff from HTP customer service explained to him what was wrong and he knew right away that my plug on the back of the welding machine for the cooler power source was wired wrong. Jeff immediately sent me the replacement plug within 48 hrs and I had it installed under 2 minutes. Excellent welding machine and excellent customer service you can’t ask for anything more!!! You won’t get this kind of customer service from Miller or Lincoln… talking from experience!!!


HTP America - USA Weld

Anthony, Thanks for your review! Hope you are a long time customer in the following years!