We use cookies to analyze website performance and traffic. If you continue to visit our website, you accept our privacy policy.

Industry Q&A

1. What are the types of Medical Gas Fittings?

Bay Corporation offers a wide variety of medical gas fittings including the following and international fittings. Common styles of Medical Gas Fittings are, Chemetron®, Ohmeda®, Puritan®, Schrader® and DISS. International fittings include, SIS (Australian), AFNOR (French), DIN (German), BS (British Standard), NIST (European), UNIFOR (Italian), AGA (Scandinavian) and JS (Japanese.)

2. What is the color coding for Medical Gas Hose Assemblies? 

Medical Gas Hose Assemblies following a color coding system to identify which gas is being administered. The following U.S. color chart is for your assistance: 

Carbon Dioxide - Grey

He-O2 - Brown & Green

Instrument Air - Red (USA only)

Medical Air - Yellow

Nitrogen - Black

Nitrous Oxide - Blue

O2-He - Green & Brown

Oxygen - Green

Vacuum (Suction) - White

WAGD (Evac) - Purple

3. What is considered a Medical Gas?

Medical Gas is identified as Nitrogen, Oxygen, Nitrous Oxide, Medical Air, WAGD (Waste Anesthesia Gas Disposal), Medical Vacuum, Carbon Dioxide and Helium.

4. What is Medical Gas used for?

Medical gasses are used in medical procedures, including veterinary and dental. They are commonly used in surgical procedures, by anesthesiologists, in respiratory therapy, and in emergency care. Medical gasses are also used by scuba divers. 

5. What does DISS stand for?

The Compressed Gas Association (CGA) developed the Diameter-Index Safety system (DISS) to establish a standard for non-interchangeable, removable connections for use with Medical Gases, Instrument Air, Vacuum (Suction), and WAGD (Waste Anesthetic Gas Disposal). Non-interchangeable indexing is achieved by a series of increasing and decreasing diameters in the components of the connections. These specific diameters act in key-like fashion, so that fittings within the gas service "family" will connect only with their own "family members." In place of diameter indexing, Oxygen (DISS 1240) has been assigned the long established 9/16"-18 thread connections as its safety standards.

6. Where can I buy Medical Gas Fittings?

Bay Corporation located in Westlake, Ohio offers a team of expert engineers and account managers who are highly knowledgeable in the field of medical gas products, including medical gas fittings. We can design, engineer, and manufacture streamlined solutions for you. 

7. What is the “standard” size for a fitting?

There is no “standard” size. We offer fittings and connections based on the specifications established by the Compressed Gas Association (CGA) and National Pipe Thread (NPT). Our quick-connect and international fittings product lines are based on their respective original designs.

8. When should a gas connector be replaced?

All medical gas fittings and connections should meet current standards for proper gas identification and safety. You should never “rig” a system outside the accepted standards. All fittings and connections that are improperly used should be replaced immediately. All fittings and connections that show all wear and tear should be replaced immediately. Please contact us with any questions and/or concerns.

9. What can you tell me about Conductive and Non-conductive hose?

Bay Corporation manufactures and sells both Conductive and Non-conductive medical-grade hose products.  Conductive hose was developed at a time when flammable anesthetic gases were used in an effort to help ground medical devices as well as to help eliminate accidents caused by these same gases in the operating room. Today, the medical industry has eliminated the use of flammable anesthetic gases in most medical facilities around the world and yet, the use of Conductive hose remains a popular choice of medical facilities for its added layer of safety.  While we cannot offer an official recommendation, it is our opinion that the selection of hose product be based on where and how the hose product is used.  For reference only, our Conductive hose meets the conductivity requirement that was specified in NFPA 99:2005.

10. What is the difference between a Demand Valve and a Check Valve?

Demand Valves are also known as "Demand Check Units" as well as "DV's." These valves are opened when a mating connection is made as noted in the diagram below.



Check Valves are also known as "One-Way Check Valves" as well as "CV's." These valves are opened when gas pressure is present and it activates the valve as noted in the diagram below.