Providing Medical Gases, Gas Systems and Equipment for:

Healthcare, Clinics, Research, Laboratories, Physicians, Dermatology, Dental, and Veterinary Practices

Local ~ Experience ~ Service ~ Convenience

Central Welding Supply is the only regional provider capable of producing gases and gas mixtures to meet our customers’ need for all grades and purity specifications. Our 10,000 sq ft cylinder fill plant at Smokey Point, WA headquarters, is the centerpiece for distribution of cylinder gases throughout Western Washington, Oregon and Alaska. We currently fill oxygen, nitrogen, argon, helium, carbon dioxide, and their derivative mixes in both cryogenic liquid and high-pressure gaseous forms. We are capable to produce ultra-high purity gases, extremely high pressure gases, and specialty gas mixes in-house, providing the most complete gas products line in our region. Our fill facility currently processes and fills over 40,000 cylinders per month.

  • Our customers rely on us for fast and efficient gas delivery from one of our 28 retail distribution centers throughout Western Washington, Oregon, and Alaska.

  • Customer' routine and emergency orders are all managed from the nearest Central Welding Supply location, insuring prompt service and accountability.

  • Whether you're placing an order or seeing information on your account, you can always expect prompt service from a local contact.

  • Largest independent distributor of medical gases in Western Washington.

  • Established provider for hospitals, surgery centers, dental practices, medical centers, and research centers.

  • Medical Gas Industry/Facility compliance support for requirements as outlined by NFPA, CGA, USP, JCAHA, OSHA, and NIOSH.

  • Consulting support and on-site safety and compliance inspections.

  • Medical Division Headquarters

    Central Welding Supply
    15700 Nelson Rd South
    Tukwila, WA 98188
    Office: (425) 228-2218

  • Kirby Lang

    Medical Gases Sales Manager
    Call: (425) 864-1788
    kirbylang@centralwelding.com

  • Barry Groves

    South Seattle Region
    Call: (360) 281-7938
    barrygroves@centralwelding.com

  • Teresa Buchholz

    Seattle Metro Area, Eastside, and
    North Puget Sound
    Call: (206) 856-2247
    teresabuchholz@centralwelding.com

  • Mark Murano

    South Puget Sound
    Call: (253) 377-9315
    markmurano@centralwelding.com

  • Scott Huereña

    SW Washington and Oregon Regions
    Call: (425) 876-2105
    scotthuerena@centralwelding.com

Delivery Throughout Western Washington, Oregon, and Alaska

Besides regular weekly delivery we offer same-day delivery, and scheduled weekend or after 5:00 PM weekday deliveries. While routine weekly deliveries are managed under the assigned delivery territories shown, both fulfillment centers support emergency deliveries, special events, and unplanned run-outs.

Delivery Scheduling

Customers may choose between automatic prescheduled delivery (weekly, twice monthly, or monthly), OR call in for "as needed" delivery service.

Cylinder Exchange Program

Our exchange program allows for customers to have a full tank on-hand, as well as a spare, for timely and efficient change-out of your empty tanks.

Medical Gases Compliance Division

Medical Gas Compliance & Distribution - Collin Holeman
collinholeman@centralwelding.com

Quality Control Manager - Gary Emerson
garyemerson@centralwelding.com

Medical Gas State Licensing

Complaint Resolution Process
Please download and complete the Complaint Form linked below and send via email to our compliance contacts.
Complaint Form

Medical Gas Products

Meeting the needs of today's modern medical facilities, we offer an extensive supply of medical and specialty gas products and equipment. We provide a wide range of portable cylinders options. Or, for large scale operations, we can configure gas system installations plumbed directly into your healthcare facility.

USP* Oxygen Gas Specifications

Oxygen, as a basic component of air and necessary to sustain life and produce energy is essential in many healthcare applications. In hospitals medical oxygen plays a vital role in nearly all medical procedures.

  • anesthesiology

  • surgery

  • resuscitation

NF** Nitrogen
Gas Specifications

USP* Air by Compression
Gas Specifications

USP* Helium
Gas Specifications

Carbon Dioxide (CO2)
Gas Specifications

SPECIALTY MEDICAL MIXES
BLOOD GASES

USP* Nitrous Oxide Gas Specifications

Nitrous oxide is used as an analgesic, often in combination with other agents for the production of anesthesia. Nitrous oxide is also used for cryosurgery.

Visit SDS Resource Page for Safety Data Sheets for our Gas Products.

* The United States Pharmacopoeia (USP) is a listing (compendium) of drugs licensed for use in the United States with the analytical standards necessary to establish purity suitable for human use applied to each of the listed drugs. Drugs sold for human consumption in the US must meet or exceed the purity standards listed in the USP. Drugs meeting these requirements must include a designation on their label that demonstrates compliance with standards listed within the USP; typically, this is shown as the initials USP immediately following the name of the drug. Many nations have their own Pharmacopoeia to list and specify requirements for drugs legally sold within their borders.

** NF - The United States Pharmacopeia–National Formulary (USP–NF) is a book of public pharmacopeial standards. It contains standards for medicines, dosage forms, drug substances, excipients, medical devices, and dietary supplements.

MEDICAL GAS CYLINDER INFORMATION

OXYGEN - O2 (Cylinder color is green)
Letter Cubic Feet Liters D.O.T. # Full
D 14 367 2015 2100
E 25 708 2015 2100
M 125 3538 2015 2100
K 251 7103 2100 2200
J or S 282 7952 2265 2400
T 337 8490 2400 2600
NITROUS OXIDE - NO2 (Cylinder color is blue)
Letter Pounds Liters D.O.T. # Full
E 6.7 1590 2015
F 20 2413 2015 500
M 33 4942 2015 TO
G 50-56 14163 2015 700
H 64 16057 2265
T 75 18550 2400
NITROGEN NF - N2 (Cylinder color is BLACK)
Letter Cubic Feet Liters D.O.T. # Full
E 21 551 2015 2100
K 230 6044 2100 2200
H 255 2265 2400
T 304 7989 2400 2600
MEDICAL AIR (Cylinder color is Yellow)
Letter Pounds D.O.T. # Full
E 22 2015 2100
M 116 2015 2100
K 234 2015 2100
MEDICAL CO2 (Cylinder color is Grey)
Letter Pounds D.O.T. # Full
E 7 2015 500
G 50 2015 TO
H 64 2265 700
Cylinder sizing chart Accurately measure size.

Gas Systems & Equipment

Providing Medical Equipment and Systems for Healthcare & Research, Hospitals/Clinics, Laboratories, Physicians, Dermatology, Dental, and Veterinary Practices

Our vendors are chosen for the quality of their products and services. Whether it's fittings, regulators, or gas manifold systems, we can guarantee products that are designed and manufactured to provide unparalleled technical accuracy for the most demanding applications.

  • Cryogenic Equipment

  • Cylinder Brackets

  • Cylinder Connections

  • Cylinder Storage/Handling

  • Cylinder Wrenches

  • Filters/Purifiers

  • Flowmeters

  • Hoses

  • Leak Detector Solution

  • Low Pressure Gas Alarm

  • Manifolds

  • Pressure Guages

  • Purge Assemblies

  • Regulators

  • Regulator-Brackets

  • Valves

Respiratory Therapy Gases

  • Therapy gases

  • Diagnostic gases

  • Anesthetic gases/Nitrous Oxide

  • Lung diffusion gas mixtures

  • Oxygen

  • Helium-oxygen mixtures

  • Intensive care/NICU/CCU

  • Pulmonary function calibration products

  • Biomedical engineering

  • Physician offices and labs

  • Custom specifications

Medical Drug Gas - Therapy Cylinder Size Contents Connection
5% Carbon Dioxide in Oxygen 200 226 cf 280
10% Carbon Dioxide in Oxygen 200 226 cf 500
20% Oxygen in Helium 200 199 cf 280
30% Oxygen in Helium 200 199 cf 280
Lung Diffusion Gases Cylinder Size Contents Connection
0.3% Carbon Monoxide, 10% Helium, 21% Oxygen in Nitrogen 200 209 cf 500
0.3% Carbon Monoxide, 0.5% Neon, 21% Oxygen in Nitrogen 200 213 cf 500
0.3% Carbon Monoxide, 0.3% Methane, 21% Oxygen in Nitrogen 200 213 cf 500
0.3% Acetylene, 0.3% Carbon Monoxide, 0.3% Methane, 21% Oxygen in Nitrogen 200 213 cf 500
Blood Gas Mixtures Cylinder Size Contents Connection
2-14% Carbon Dioxide in Nitrogen 200 228 cf** 500
7-12% Carbon Dioxide in Oxygen 200 233 cf** 500
1-19% Oxygen in Nitrogen 200 228 cf** 500
2-12% Carbon Dioxide, 12-15% Oxygen in Nitrogen 200 228 cf** 500

* Non-standard grade mixtures, custom mixtures, and cylinder sizes are available upon request.
** Contents are approximate.

Respiratory Calibration Products

Central Medical Gases offers all the gases that your pulmonary testing requires. We inventory the most commonly used mixtures and can manufacture products in a variety of cylinder sizes to meet your application needs.

  • Blood gas mixtures

  • Medical laser gas mixtures

  • Computed Tomography (CT) scanning mixtures

  • Calibration mixtures

  • Respiratory therapy

  • Pulmonary function

  • Respiratory calibration products

  • Instrument manufacturing

  • Instrument service organizations

  • Operating room

* For listed accuracies. Call for specifications at lower concentrations.

Mixture Expiration Period Raw Material Traceability
Mixtures containing Carbon Monoxide in aluminum cylinders 3 years USP/NF where applicable NIST Class 1 Weights
Mixtures containing Carbon Monoxide in steel cylinders 2 years USP/NF where applicable NIST Class 1 Weights
Mixtures in BD cylinders 1 year USP/NF where applicable NIST Class 1 Weights
Mixtures without Carbon Monoxide in all other cylinders 3 years USP/NF where applicable NIST Class 1 Weights
Pure Oxygen, Pure Helium 5 years USP/NF where applicable NIST Class 1 Weights
SPECIFICATIONS
Method of
Preparation		 Minimum
Concentration*		 Components
Gravimetric 0.3% CH4, C2H2, CO, Ne
1.5 % CO2, O2, He, N2
SPECIFICATIONS cont.
Blend
Accuracy		 Analytical
Accuracy		 Gas
Specifications
± 0.03% absolute ± 0.03% absolute H2O < 20 ppm
± 2% relative ± 2% relative CH4 < 25 ppm