gas flow for welding
By Ryan Perry

Can you accurately flow a different gas through a flow control device not calibrated for the same gas?

Quite often, when in the field, it becomes necessary to use another gas through a flow control device such as a flowmeter, flowmeter regulator, or flow gauge regulator. While the flow control device may be safe and compatible for the other gas, the issue often becomes one of accuracy.

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regulator maintenance
By David Gailey

What general maintenance should be performed on a regulator and how often?

A regulator (or changeover manifold) can last several years if properly maintained. Regulator maintenance is an important part of maximizing your system performance and extending the service life of your system components.

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What is the 1/7 acetylene rule?
By Neal Lembke

What is the 1/7 acetylene rule?

Acetylene by nature is an unstable gas that has limitations. The 1/7 rule protects operators from unsafe operating conditions. But what, exactly, does the 1/7 rule say and what effect does it have on acetylene cylinders? This blog entry written by Neal Lembke answers those questions.

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Harris regulator gauges
By Doug Perry

What factors go into selecting regulator gauges?

A regulator gauge is a simple device whose sole function is to indicate high and low pressures flowing through the regulator. That doesn't mean all gauges are the same.

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DYK 2019-006
By Chad Koens

Did you know that gas flames produce infrared radiation?

Gas flames produce infrared radiation, which may have a harmful effect on the skin and especially on the eyes. Proper eye protection is vital to prevent permanent retinal damage.

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DYK banner
By Paul Greenwell

Did you know that a protocol station can extend the life of a regulator?

Sometimes referred to as single station manifolds or regulator mounting stations, a properly installed protocol station can extend the life of a regulator.

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Rail cutting with a Harris torch
By Harris Products Group

How to properly light, adjust and shut down an oxy–acetylene torch

Lighting, adjusting and shutting down an oxygen-acetylene torch is easy – especially when following the proper procedures. In addition to these easy to follow instructions, you must always be sure to follow the torch manufacturer's operating procedures.

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titanium cutting image
By Mike Baglier

Did you know that you can cut titanium with an oxy-fuel torch?

Did you know that you can cut titanium with an oxy-fuel torch? It's possible, with the right equipment and know-how.

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solder image
By Christen Foltz

Did you know that you can solder an HVAC connection?

Did you know low-temperature tin/silver solders have higher strength and ductility than typical plumbing solders? This makes them suitable for most residential HVAC connections.

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Purge manifolds main image
By David Gailey

Proper use of purge devices can extend the life of specialty gas equipment in corrosive gas systems

With the high cost of specialty gas equipment for corrosive and reactive gases, you need to protect your investment as much as possible. In this blog entry we discuss what steps you should take to extend the life of your equipment.

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Hose blog image
By Doug Perry

What is the difference between A, B and C welding hoses?

This blog looks at the difference between welding hose - hose size, connection size, and gas usage.

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Harris silver flux image
By Harris Products Group

What is the difference between Harris silver brazing fluxes and where is each one used?

We get a lot of questions about the differences between the silver brazing fluxes we make and where each one should be used, so we've prepared a short guide that provides the answers.

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Brazing with flux image
By Harris Products Group

Why is flux required when brazing brass and not required with copper to copper?

A fluxing agent (or a controlled atmosphere as found in furnace brazing) is required for all brazing and soldering applications. The purpose of the flux is to remove oxides from the base material and to prevent oxidation during the heating process, thus promoting the free flow of the brazing filler metal.

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gas welding
By Doug Perry

What is the difference between gas welding and braze welding?

Gas welding and braze welding both require skill, patience and an oxy-fuel torch. There are several differences, however, between the two applications that require different techniques and materials.

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Harris single stage 25GX gas regulator
By Harris Products Group

With a single stage regulator the delivery pressure rises as inlet pressure decreases - why?

Gas regulators are designed to reduce pressure to a usable volume for a specific application. What happens when gas flows into a single stage regulator?

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TIG welding
By Harris Products Group

What is the difference between RG45 & RG60 welding wire?

Both are solid wire oxyfuel welding rods, but each has its own distinct characteristics.

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Production brazing
By Bob Henson

What is solidus and liquidus and why is it important to brazing?

If you look at a list of brazing filler metals you’ll note many compositions and a variety of melting temperatures. The melting characteristics of brazing filler metal are an important aspect in filler metal selection. Here's a brief outline of how alloys melt and the way to use this information to make the best selection.

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Cutting metal with an oxy-fuel torch
By Harris Products Group

Can titanium be cut with an oxy-fuel torch?

Titanium can be cut with an oxy-fuel torch as long as you take certain precautions to protect yourself and your work area.

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CGA connections on gas cylinders
By Harris Products Group

Why do cylinder valves have different thread types?

It is required in the U.S. by OSHA and the Compressed Gas Association (CGA) that cylinder valves be designed differently to prevent interchangeability with gas systems and equipment. This is one of the most important safety practices in the gas industry.

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Brazing aluminum
By Harris Products Group

What metals can be brazed?

Many different types of metals can be brazed. Copper, and copper based materials like brass and bronze, are typically brazed with copper phosphorus silver alloys also known as American Welding Society (AWS) BCuP filler metals.

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Cutting with a Harris torch
By Harris Products Group

Will a Check Valve stop a Flashback?

A flashback is an uncontrolled flame that recesses back into your oxy-fuel gas equipment, upstream of the location where the gas is designed to mix. In order to have a flashback you must have oxygen and fuel mixed together.

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Machine cutting torches
By Harris Products Group

How to Use a Cutting Torch Tip Chart

Next to the manufacturer's operation manual and safety guidelines, the cutting tip chart is the next important printed advice for having a safe, great hand cutting torch experience. If you are having trouble lighting a torch, correctly adjusting the flame or the torch just will not stay lit, the cutting tip chart contains the most likely answers and is a good starting point.

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Harris two-stage regulator
By Harris Products Group

Two-Stage Regulators

The basic function of a gas pressure regulator is to reduce unusable high pressure from the source to a lower usable delivery pressure. Two-stage regulators are designed to lower the high pressure in two stages. They require less readjustment and provide a more constant delivery pressure despite changes in inlet pressure. They are exceptionally well suited for high pressure cylinder applications.

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Brazing joint with Harris alloy
By Harris Products Group

Factors to Consider When Choosing a Brazing Alloy

There are many factors that go into selecting a brazing alloy - base metal, joint clearance, and environment are just a few. Here are some things to consider when deciding which brazing alloy you should use.

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Harris regulators at SkillsUSA
By Harris Products Group

Acetylene vs. Alternate Fuel Characteristics

When selecting between acetylene and alternate fuels, there are several factors that need to be evaluated. While cost is certainly a consideration, it's also important to know the characteristics of each gas. Choosing the wrong fuel gas for your application could end up costing you more in the long run. Here are some important characteristics of both gas types to help you make the best choice.

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