The AVSU 15mm oxygen area valve service unit is a medical gas isolation and monitoring component used within a Medical Gas Pipeline System (MGPS). An Area Valve Service Unit provides a controlled point where the medical gas supply to a particular clinical area can be isolated for maintenance or in an emergency.
CPX AVSU systems are available for oxygen and other medical gases and can be installed in flush or surface-mounted configurations. The units incorporate a 90° shut-off ball valve, gas-specific connections and provisions for pressure monitoring.
For hospital projects, the exact valve size, gas configuration, pressure-monitoring arrangement and pipeline connections should be confirmed against the project specification before ordering.
The 15mm oxygen AVSU valve is designed for use on an oxygen medical gas pipeline where a local isolation valve is required.
The AVSU allows authorized personnel to isolate the oxygen supply serving a designated area without necessarily shutting down the entire medical gas pipeline system. CPX AVSU units use a 90° shut-off ball valve operated by an ergonomic handle and provide gas-specific NIST connections for upstream and downstream service.
A Kenya medical-gas tender specification also specifically lists an AVSU – 15mm oxygen area valve service unit complete with gauges, demonstrating the use of this configuration in Kenyan medical gas infrastructure projects.
An oxygen area valve service unit is normally installed at an appropriate point in a hospital medical gas distribution system to allow a designated section of the oxygen pipeline to be isolated.
Depending on the configuration, an AVSU may provide:
Oxygen supply isolation
Local pressure indication
Access for medical gas servicing
Gas-specific pipeline connections
Emergency access to the isolation valve
Connection points for pressure monitoring
Secure enclosure for the valve assembly
WHO technical specifications for health-facility medical oxygen systems describe an AVSU/zone valve box as a panel-type box with a downstream pressure sensor and analogue gauge for indicating line pressure, together with an isolation valve for oxygen.
A medical gas area valve forms part of the isolation and monitoring infrastructure of an MGPS.
Although the product in this listing is configured for oxygen, AVSU systems can also be manufactured for other medical gases, including nitrous oxide, medical air, surgical air and vacuum. CPX documentation identifies separate gas-specific product codes for these services.
Gas-specific identification is important because medical gas components should be matched to the intended gas service and should not be interchanged without confirmation from the manufacturer and system designer.
An AVSU oxygen valve with pressure gauge combines local oxygen isolation with pressure monitoring.
The pressure gauge allows authorized personnel to observe the oxygen line pressure at the relevant area. WHO specifications for medical oxygen systems call for the AVSU/zone valve box to incorporate downstream pressure sensing and an analogue gauge indicating pressure in bar and psi.
Depending on the exact AVSU configuration, pressure sensors and monitoring components may be incorporated inside the enclosure. CPX documentation also describes pressure-sensor provisions and accessible NIST connections for pressure testing and gas sampling.
Product type: Area Valve Service Unit
Gas service: Medical oxygen
Nominal pipeline entry: 15mm configuration
Valve: 90° shut-off ball valve
Pressure monitoring: Gauge/sensor configuration as specified
Mounting: Flush or surface-mounted options
Enclosure: Protective valve box
Connection: Gas-specific NIST connections on applicable CPX configurations
Application: Medical Gas Pipeline System
Use: Local oxygen isolation and servicing
Suitable for professional hospital medical gas installations
Gas identification and flow direction can be visible through the enclosure window on applicable CPX configurations.
Note: Exact gauge range, pipe connection arrangement, box dimensions and monitoring accessories depend on the selected AVSU configuration and should be confirmed before purchase.
The 15mm oxygen AVSU valve can be incorporated into medical gas infrastructure serving:
Hospital wards
Intensive care units
Operating theatres
Emergency departments
Treatment rooms
Procedure rooms
Diagnostic areas
Specialized clinical departments
Other healthcare areas supplied by centralized medical oxygen
The AVSU is particularly useful where a defined section of the oxygen pipeline needs to have a dedicated isolation point.
The AVSU provides a local isolation point within the oxygen pipeline.
A general operating principle is:
Oxygen enters the AVSU from the upstream pipeline.
The supply passes through the isolation valve when the valve is open.
The downstream pressure can be monitored using the installed gauge or pressure-sensing arrangement.
Authorized personnel can operate the valve to isolate the downstream section when required.
The downstream pipeline can then be serviced or maintained according to the applicable medical gas procedure.
The CPX AVSU uses a 90° ball valve and incorporates gas-specific NIST connections that can provide accessible points for pressure testing and gas sampling.
Installation of an oxygen area valve service unit should be performed by suitably trained medical gas pipeline personnel.
Installation planning should confirm:
Oxygen pipeline size
AVSU gas configuration
Upstream and downstream connections
Flush or surface mounting arrangement
Pressure-gauge requirements
Accessibility for emergency isolation
Pipeline identification
Valve direction and flow direction
Applicable medical gas standards
Testing and commissioning requirements
Kenya's Ministry of Health mechanical-works specifications reference area valve service units within medical gas and vacuum systems and require medical gas piping and AVSU installations to conform to specified standards.
Medical oxygen systems require appropriate installation, cleanliness, identification and testing procedures.
When working with an oxygen AVSU:
Use components intended for medical oxygen service.
Do not interchange gas-specific components without verification.
Keep oxygen-system components free from oil and grease.
Ensure correct pipeline identification.
Do not operate an isolation valve unless authorized.
Ensure the system is appropriately tested after installation or modification.
Follow the applicable medical gas installation and commissioning procedures.
Medical gas pipeline systems should be installed and commissioned by qualified professionals.
The price of an AVSU 15mm oxygen area valve service unit in Kenya depends on the manufacturer, valve configuration, pressure gauge arrangement, enclosure, connections and project requirements.
A Kenyan medical-gas tender document specifically includes a 15mm oxygen AVSU complete with gauges, confirming this configuration is specified for local medical gas projects, but the document does not provide a reliable current retail selling price for the unit.
For procurement, request a quotation based on the exact required configuration rather than comparing AVSU prices solely by nominal pipe size.
When selecting an oxygen AVSU valve with pressure gauge, consider:
Correct gas service
15mm or required pipeline connection
Manufacturer and model
Pressure-gauge range
Pressure-sensor requirements
Flush or surface mounting
NIST connection configuration
Valve accessibility
Enclosure design
Pipeline compatibility
Applicable standards
Availability of replacement components
For hospital projects, the AVSU should be selected as part of the overall MGPS design rather than as an isolated plumbing component.
AVSU stands for Area Valve Service Unit. It is a medical gas pipeline component that provides local isolation of a gas supply serving a particular clinical area.
A 15mm oxygen AVSU valve is used to isolate and service an oxygen pipeline section within a medical gas pipeline system where the specified 15mm configuration is required.
An AVSU can be supplied with pressure monitoring and a gauge. WHO medical oxygen specifications call for a downstream pressure sensor and analogue gauge in the AVSU/zone valve box, while Kenyan project specifications also reference 15mm oxygen AVSUs complete with gauges.
Yes. CPX AVSU units are documented as being suitable for flush or surface-mounted installation.
Gas-specific AVSUs are available for services such as oxygen, nitrous oxide, medical air, surgical air and vacuum. The correct gas configuration must be selected for the pipeline service.
The CPX single AVSU uses a 90° shut-off ball valve operated using a red ergonomic handle.
An oxygen AVSU should be installed, tested and commissioned by appropriately trained and qualified medical gas pipeline personnel.
Applicable requirements depend on the project and jurisdiction. CPX documentation references standards including BS EN 7396-1 and HTM 02-01, while Kenya's Ministry of Health mechanical-works specifications also reference medical gas standards for AVSU installations.
Important: Exact dimensions, pressure-gauge range, connection arrangement and accessories should be confirmed against the specific AVSU model and project specification before ordering.
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