Equinox® II

Analgesia Administration System

The Equinox® II Administration System is simple, safe, efficient way of delivering pain relief during trauma, childbirth or painful procedures!

The Equinox® II Administration System is a rugged demand inhalation unit for the administration of 50% N2O/50% O2 analgesic gas mixture (Entonox®, ALnox® etc.) and was specifically designed for use in emergency and obstetric analgesia.

The system consists of a single stage pressure reducing regulator, a reinforced supply hose, a demand valve and a Universal patient oro-nasal mask. The Equinox® II Demand Valve delivers high flow rates with low triggering pressures, reducing the amount of effort required by the patient, to maintain the demanded flow.

The lightweight,  demand valve incorporates a 360° Patient Valve Swivel Housing that is easily disassembled for cleaning. A Bleed Pin is included with the demand valve to effectively bleed the system of residual gas after use.

Virtually maintenance free, the durable the Equinox® II Administration System is a simple, safe and efficient way of delivering pain relief during trauma, childbirth or painful procedures.

Use of filters:

The use of a Breathing System Filter or BSF (commonly available in all hospitals) placed between the facemask or bite block, and the Equinox® II Demand Valve, removes the need to disassemble and disinfect the patient valve and diaphragm. Any pathogens present in the expired air are removed by the filter eliminating the risk of cross infection.

After each patient use, the Universal Facemask should be disinfected. A disposable facemask or bite block should be discarded. The outside of the demand valve body, gas supply tubing and patient valve can simply be wiped over with a hard surface disinfect in line with standard department protocols. Not only does the use of a BSF significantly reduce the downtime of the device between patients, it also limits the need for replacement parts (diaphragm and Patient Valve Housing) for the device.

The use of standard respiratory disposables also removes the need to stock proprietary items which have only one use.

NOTE: Only filters complying with ISO 23328 should be used.


  • Provides fast, efficient method of delivering inhalation analgesic gas.
  • Durable anodized aluminum body.
  • Provides up to 160 Lpm Flow Rate on Demand by the patient.
  • Two Year warranty against manufacturers defects.


[read more=”Click here for Specifications” less=”Read less”]

Demand Flow rate 0-160 lpm
Demand Flow Triggering pressure 100 lpm @ < -5 cm H2O
Input pressure 50 PSI
Operating Temperature -18°C to 50°C (0°F to 122°F)
Storage Temperature -37°C to 60°C (-35°F to 140°F)
Input Connection 5/8″ DISS
Patient Connection 15/22 mm
Weight 0.24 Kg (7oz)

(All specifications are subject to a tolerance of +/- 10%.)

Ordering Information

[read more=”Click here for Ordering Information” less=”Read less”]

01EQ7000E Equinox® II Administration System c/w Regulator, Bleed Pin,
7 Foot Supply Hose, Demand Valve, Universal Face Mask, Cylinder Wrench
01EQ7001E Equinox® II Demand Valve c/w 7 Foot Supply Hose,
Universal Resuscitation Face Mask
01EQ7006 Equinox® II Demand Valve Bleed Pin with Chain Each
01CV8028-CS Single-Use 6 Foot Circuit with Scavenger Hose
and Adapter with Mouthpiece
17MP1997 O-Two 90o (Male to Male) adjustable
Oxygen (O2) DISS elbow assy
17MP1998 O-Two 90o (Male to Male) adjustable Nitrous Oxide
(N2O) DISS elbow assy
17MP1528 Equinox® II Diaphragm valve assembly Each
17MP1535-CS Equinox® II Anti-entrainment ring Case/10
17MP1100-90Deg Equinox® II 90o Scavenger Adapter Each
01RE05S10-B Equinox® II Brass Pin-Indexed Yoke Regulator with
1 x 5/8” Self Sealing DISS Outlets
17MP1329 Equinox® II 7′ replacement hose Each



Accessories for Equinox

O-Two Medical Technologies Inc. reserves the right to change, modify, or update the product specifications, product data and product information contained herein at any time without prior notice.

eSeries e700