Gentec 284MA-15LY1 click-style oxygen regulator, green aluminum body, 0-3000 psi contents gauge, hose barb outlet, DISS outlet and CGA 870 yoke with T-handle - Pacific Biomedical

Gentec Click-Style Oxygen Regulator, 0.5-15 LPM, Hose Barb and DISS Outlet, CGA 870, 284MA-15LY1

SKU: GT-284MA-15LY1

Genstar Technologies

Gentec Click-Style Oxygen Regulator, 0.5-15 LPM, Hose Barb and DISS Outlet, CGA 870, 284MA-15LY1

The Gentec 284MA-15LY1 click-style oxygen regulator by Genstar Technologies mounts on a medical oxygen cylinder with a CGA 870 yoke and delivers 0.5 to 15 LPM through a hose barb outlet, plus one DISS outlet at a 50 psi delivery pressure.1 It has an aluminum body with a brass high-pressure chamber, a 3000 psi maximum inlet pressure, a 1-1/2 in UL-listed contents gauge, an internal relief valve and a sintered bronze inlet filter.1 Pacific Biomedical carries it with its oxygen regulators.

Product Highlights:

  • Twelve click settings: 0, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 10 and 15 LPM, read in an easy-to-read flow rate window.1
  • Hose barb plus DISS power take off: A hose barb outlet and one DISS outlet at 50 psi delivery pressure; Gentec calls this DISS outlet a power take off on its click-style regulators.1
  • CGA 870 yoke inlet: Fits medical oxygen cylinders with a CGA 870 yoke valve, such as size E cylinders.12
  • Built for cylinder pressure: 3000 psi maximum inlet pressure, internal relief valve and piston design regulator.1
  • Inlet filter: Sintered bronze inlet filter for longer service life.1
  • Body: Aluminum body with a brass high-pressure chamber.1

What's Included:

  • 1 Gentec 284MA-15LY1 click-style oxygen regulator
  • Not included: the oxygen cylinder, oxygen tubing, cannula or mask

Specifications:

Product Click-style oxygen regulator with hose barb and one DISS outlet
Brand Gentec (Genstar Technologies)
Part number 284MA-15LY1
Pacific Biomedical SKU GT-284MA-15LY1
Gas Oxygen1
Flow settings (LPM) 0, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 10, 151
Outlets Hose barb; 1 DISS outlet1
Delivery pressure 50 psi1
Inlet connection CGA 870 yoke1
Maximum inlet pressure 3000 psi1
Contents gauge 1-1/2 in diameter, UL-listed1
Body Aluminum with brass high-pressure chamber1
Design Piston design regulator; internal relief valve; sintered bronze inlet filter1
Standards Complies to CGA standards1
Medical air version 287MA-15LY1, CGA 950 inlet1

Use Cases:

  • Oxygen delivery through tubing on the hose barb from a medical oxygen cylinder with a CGA 870 yoke valve12
  • Supplying oxygen at 50 psi to equipment with a DISS oxygen inlet, from the DISS outlet1

Compatible products:

Frequently Asked Questions:

What is a click-style oxygen regulator?

It is a cylinder regulator with a set of fixed flow settings. The Gentec 284MA-15LY1 is a piston design click-style regulator with 12 settings from 0 to 15 LPM shown in a flow rate window, and a 50 psi delivery pressure.1

What flow rates does this oxygen regulator have?

0, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 10 and 15 LPM.1 For flows above 15 LPM, Gentec offers the 284MA-25LY1, which tops out at 25 LPM.1

What is the DISS outlet on an oxygen regulator for?

The 284MA-15LY1 has one DISS outlet that delivers oxygen at 50 psi, alongside the hose barb.1 Gentec calls this a DISS power take off outlet on its click-style regulators, and it supplies equipment with a DISS oxygen connection from the same cylinder.1 Models with a -15LY2 suffix have two DISS outlets, and models without the 1 or 2 suffix have none.1 On the 284MA-15LY1 the DISS outlet is the threaded male fitting below the gauge, and a female DISS oxygen fitting such as the Precision Medical 0124 adapter threads onto it.

What oxygen tank does a CGA 870 regulator fit?

Medical oxygen cylinders with a CGA 870 yoke valve, such as size E medical oxygen cylinders.2 The 284MA-15LY1 has a CGA 870 yoke inlet and is for oxygen only.1 For CGA 540 cylinder valves, Gentec makes the 284MA-15L1, and the medical air version of this regulator is the 287MA-15LY1 with a CGA 950 inlet.1

How do you put an oxygen regulator on an E tank?

Check that one yoke seal washer is in place and in good condition on the regulator inlet, slide the yoke over the cylinder post valve, seat the index pins in the valve holes without forcing them, and hand tighten the T-handle screw into the dimple on the valve.3 Turn the flow setting to 0, stand with the cylinder between you and the regulator, open the cylinder valve slowly, and confirm pressure on the gauge.3

How long does an E tank last?

Duration in minutes equals cylinder pressure in psig times the cylinder factor, divided by flow in LPM; the E cylinder factor is 0.28, and planning to change the cylinder at about 500 psig gives a safer estimate.4 At a gauge reading of 2,000 psig with a 500 psig reserve, an E cylinder provides about:

Flow setting Approximate time
1 LPM 420 min
2 LPM 210 min
3 LPM 140 min
4 LPM 105 min
5 LPM 84 min
6 LPM 70 min
8 LPM 53 min
10 LPM 42 min
15 LPM 28 min

These are calculated from the formula above; use your own gauge reading and protocol.4

How do you check how much oxygen is left in the tank?

Read the contents gauge. The 284MA-15LY1 has a 1-1/2 in UL-listed gauge reading to 3000 psi, the regulator's maximum inlet pressure.1 A cylinder approaching 500 psig is near the point where it should be replaced.4

Why is my oxygen regulator leaking at the tank?

For a leak between the regulator and the cylinder, close the cylinder valve and vent the regulator before adjusting anything, never tighten fittings under pressure, then inspect or replace the yoke washer and reattach.3 Use only one yoke seal washer, replace it every 6 months or after a leak, and check connections with an oxygen-compatible leak test solution.3

What connects to the hose barb outlet?

Oxygen tubing for a cannula, mask or other oxygen delivery device. The hose barb carries the selected click flow from 0.5 to 15 LPM.1

Is this a genuine Gentec regulator?

Yes. This is the new Gentec 284MA-15LY1 click-style oxygen regulator; Gentec is the medical product brand of Genstar Technologies Inc.1 Pacific Biomedical supplies it new.

How fast does this ship?

Prepaid, in-stock orders placed before 12:00 PM Arizona time typically ship the same business day via UPS within the United States, and shipping cost is calculated at checkout. For lead times or expedited options, contact CustomerService@pacificbiomedical.com or 844.436.3526.

How do I order by purchase order or get fleet pricing?

Add it to your cart on this page, or contact CustomerService@pacificbiomedical.com or 844.436.3526 for a purchase order or pricing on multiple regulators.

References
  1. Genstar Technologies Inc. GENTEC Medical Products: Solutions for Life (catalog). Oxygen Therapy, Medical Gas Regulators, 284, 285 Series Oxygen Aluminum Medical Gas Regulators: features and ordering information, pages 22 and 24 (285MA-15L1 one DISS power take off outlet; oxygen use; aluminum body with brass high pressure chamber; 3000 psi maximum inlet pressure; 1-1/2 in UL-listed gauge; complies to CGA standards; internal relief valve; hose barb outlet; piston design regulator; sintered bronze inlet filter; flow rate window; 284MA-15LY1 / 287MA-15LY1 flow settings 0, 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 10, 15 LPM, 1 DISS outlet, 50 psi delivery pressure, CGA 870 / CGA 950 inlet). Accessed October 30, 2026. tesuco.com.au.
  2. Airgas. USP medical grade oxygen, size E high pressure steel medical cylinder, CGA 870 yoke fitting (OX USPE). Accessed October 30, 2026. airgas.com.
  3. O-Two Medical Technologies Inc. Pressure Regulators for Use with Medical Gases, 01R series, instructions for use, Part 15PL2171 Rev 23. Brampton, ON; November 2016 (pin index installation; one yoke seal washer; index pins not forced; flow selector at 0; stand behind the cylinder; open the cylinder valve slowly; never tighten fittings under pressure; replace the yoke seal washer every 6 months or after a leak; leak test solution; no oil or grease). Accessed October 30, 2026. otwo.com.
  4. Landry J. Oxygen Cylinder: Uses, Safety, Sizes, and Duration. Respiratory Therapy Zone. Updated September 25, 2026 (duration = cylinder pressure x cylinder factor / flow; E cylinder factor 0.28 L/psig; reserve-adjusted duration; replace the cylinder at about 500 psig). Accessed October 30, 2026. respiratorytherapyzone.com.

Use no oil or grease on oxygen equipment.3 Follow the cylinder and regulator instructions for setup and use.

Item # Image Price Quantity

Gentec Click-Style Oxygen Regulator, 0.5-15 LPM, Hose Barb and DISS Outlet, CGA 870, 284MA-15LY1

GT-284MA-15LY1

 Gentec 284MA-15LY1 click-style oxygen regulator, green aluminum body, 0-3000 psi contents gauge, hose barb outlet, DISS outlet and CGA 870 yoke with T-handle - Pacific Biomedical

$55.00

ea

Item # Image Description Quantity

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