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Specialty Gas

CHOOSING THE RIGHT REGULATOR

Choosing the right specialty gas regulator for your application is easy. Harris has a very experienced technical and customer service staff to answer questions and make product selections fast and easy. One of the ways you can help us expedite product selection is by asking the end user 5 simple questions and then calling the Harris specialty gas team at 1.800.733.4043 Option 2.

1. Is the gas a pure or mixture?
2. What is the source of gas (cylinder, pack, dewar, etc)?
3. What is the end users required delivery pressure?
4. What is the regulator feeding (application) if known?
5. What is the flow rate required?

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INDUSTRIAL REGULATORS VERSUS HIGH PURITY REGULATORS

What makes a specialty gas regulator special?

Specialty gas regulators, sometimes referred to as “spec gas regulators” or “lab regulators,” are designed so that no contaminates are introduced into the gas stream during service. Harris’ specialty gas high purity regulators have diffusion-resistant stainless steel diaphragms and chemically inactive PTFE or PCTFE seats. All other elastomers are PTFE as well. A high leak integrity is also important so that purging or vacuum systems do not introduce atmospheric contaminates during use. Low internal volume, barstock materials and smooth internal surface finishes ensure no contaminates remain inside, if purged or evacuated. Venting is a CGA requirement. Some models use dangerous gases that require remote ventilation to a safe area.

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LIFE EXPECTANCY OF COMPRESSED GAS REGULATORS

Understanding the factors

Compressed gas regulators, when not performing optimally, can lead to many hazardous situations, including leakage of toxic, pyrophoric or asphyxiate gases into the atmosphere and/or the risk of explosion or fire. The use of regulators should be limited to persons properly trained and experienced with the use of such device, and who are aware of the inherent dangers associated with them. Applications for compressed gas regulators are so numerous, thus the life expectancy is varied and proportional to the gas service and the environment in which the device is used. Listed below are some important factors that affect regulator life expectancy:

Gas Service
Know the properties of the gas being regulated

Service Environment
Be aware of regulators that are exposed to the elements

Elastomers
Know what materials are used in the construction of the regulator

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Specialty Gas Regulator & Flowmeter Categories

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Harris model 40X specialty gas regulators are for general purpose use. Recommended for gas purity levels up to grade 4.0.

General Purpose
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Model 70X is recommended for gas purities up to Grade 5.0.

High Purity
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Models 72X and 72XC are recommended for gas purities of Grade 5.0 and higher and Models 74X are suited for Grades 6.0 and higher.

Ultra High Purity
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Regulators for vaporizing, severe service and micro specialty gas models.

Special Application
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Regulators for home health care, ambulance, hospitals, and doctor/dental offices.

Medical
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Provide the most accurate indication and precise control of gases available for a wide range of applications.

Flowmeters
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Regulators used in production and dispensing of craft beer,
wine, coffee, carbonated sodas and barrel gassing systems.

Beverage
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Includes diaphragm and needle valves, alarm systems, cylinder handling products, flashback arrestors and check valves.

Accessories