Please see Table 1 for the regulators performance specifications. This indicates the performance of
thedevice set at the standard output pressure, standard discharge and the variations at varied inlet
7. Test Specifications & Flow Characteristics
Test input pressure: Maximum 2000 psi (138 bar)
Test input pressure: Minimum 1500 psi (103 bar)
Output pressure: 4 bar (58psi) or 7 bar (100psi)
Safety valve blow off pressure: (4 bar regulator) 80 - 90 psi (5.5 - 6.2 bar)
Safety valve blow off pressure: (7 bar regulator) 150 - 160 psi (10 - 11 bar)
HP gauge tolerance (full scale):± 5%
LP gauge tolerance (full scale): ± 5%
Output pressure tolerance: ± 0.3 bar ( ± 5 psi)
Permissible leak: None
Standard Discharge: (4 bar regulator) 125 Lpm.
Standard Discharge: (7 bar regulator) 240 Lpm.
R1700 Series Medical Regulator
Operating & Safety Instructions
8. Pressure Characteristics Line Chart
Bull Nose Cylinder Fitting
Morton House, Skerton Road
Manchester, M16 0WJ
(0)161 872 6322
(0)161 848 7914
Pin-Index Cylinder Fitting
The Oxylitre R1700 series twin gauge regulator is designed specifically for medical use. It is available in
pre-set or adjustable models for: Oxygen, Nitrous Oxide, Helium, Medical Air, (4 or 7 Bar) & Carbon
Dioxide. Conforms to BS EN ISO 10524-1.
All gas connections comply with National & International Standards for safety prevention of connecting
a incorrect gas (BS 341-3 for Bull Nose; BS EN ISO 407 for Pin Index).
All models are available with a gas specific self-sealing valve or a 3/8 bsp outlet fitting which is suitable
for most piped connections.
The regulator is available with a pre set setting or a manual adjustable control key. Models are available
in pre set or adjustable units for output pressure of up to 4 Bar (58 psi) or 7 Bar (100 psi). The Medical
Air 7 Bar models may be used for driving special Air Tools etc. (see specifications & technical data for
(Please note: Filters should only be replaced by authorised/trained personnel)
The regulator is fitted with two integral filters that protect the unit from any foreign matter.
1. The first filter is placed in the inlet stem of the regulator.
2. The second filter is placed in the self-sealing valve assembly.
The regulator is fitted with an easy to read, colour coded contents gauge. A safety system is placed in
the rear of the gauge, which releases gas pressure in the event of a leak.
Low Pressure Gauge
The second gauge is the low pressure gauge that is for the purpose of indicating the amount of
pressure that is to be delivered to the output.
The safety valve system has been designed to release gas pressure for the safety of the user/patient
and/or the equipment connected to the regulator. This will operate only if the output pressure increases
due to a malfunction in the regulator. (This safety valve system is not an adjustable device)
3. Instructions for use
Fitting to a Cylinder (Note: Take great care with these operations):
Before connecting a Regulator to a Cylinder, momentarily open and close the Cylinder Valve
to blow out any accumulated dust or moisture. Inspect the inlet connector seal for signs of
damage or contamination, if found replace immediately! These seals should be replaced at
least once a year i.e. as part of a Standard Service (Note: NEVER use two seals together).
Seal for Pin Index Inlet Connectors = Part No: OX010 (BODOK)
Seal for Bull Nose Inlet Connectors = Part No: BS110 (‘O’ Ring)
Seal for CO2 Nut System = SB09A
Connect the regulator to the cylinder.
Always open the valve very slowly (approx one full turn) to reduce the danger of explosion or
fire arising from pressure shock.
If the regulator is an adjustable model with a gas specific self-sealing valve, turn the adjuster key
clockwise until the required pressure is indicated on the low pressure gauge. (not required on pre
set)If the regulator is an adjustable model with a 3/8 bsp outlet, ensure that the equipment being used
has been connected to the regulator outlet securely. Then turn the adjuster key clockwise until the
required pressure is indicated on the low pressure gauge.
Removing from a Cylinder
a. Turn OFF the cylinder valve.
b. Bleed off the pressure, by opening a valve on the apparatus connected to the regulator.
c. Disengage the regulator from the cylinder.
4. Safety Precautions for the prevention of Fire & Explosion
The Regulator or patient MUST NOT be allowed near any source of ignition i.e.:
Open electrical appliances
This precaution applies during and after patient use.
Warning: This Regulator MUST NOT come into contact with any Oil or Grease, a reaction may cause an
A medical regulator forms part of an essential support system. Regulators must be treated with care and
be serviced on a regular basis, (i.e. preventative maintenance) to ensure the unit’s reliability and quality
for the purpose that it is used for. The units require cleaning on external surfaces only by using a solution
of luke-warm water and “Dettol” or similar disinfectant fluid (read disinfectant instructions) and cleaning
Recommended at least annually by a Service Engineer and consist of:
a. Connect regulator to the cylinder (as in section 3)
b. Check the contents of the cylinder that is indicated by the pressure gauge.
c. Close the cylinder valve and observe the contents gauge for pressure drop. If the needle on the
gauge drops, this indicates a leakage in the system. The device will require a service and/or
repair (note: connected equipment may leak, please disconnect this prior to testing the
regulator. Also adjustable regulators may require adjustment during use).
Servicing should be only carried out by fully qualified technicians. A Major Service is recommended
every 5 years. For service enquiries and information, please contact our sales office. NEVER USE
FAULTY EQUIPMENT. Preventative maintenance ensures safety for the patient and user.
6. Technical Data
a. Maximum inlet pressure: 2000 psi (138 bar)
b. Minimum inlet pressure: 400 psi (27.6 bar)
c. Output pressure: 58 psi (4 bar) & 100 psi (7 bar) Nominal
d. Standard discharge: 240 Lpm
Before use, check the contents of the cylinder indicated on the pressure gauge.