P3 Area Valve Service Units (AVSU)
P3 Area Valve Service Units (AVSU)
An AVSU is the point where the medical gas supply to a defined area or department is isolated, allowing staff to shut the supply quickly in an emergency without affecting the rest of the building. P3 offers a UK-made AVSU family with several enclosure and access options.
What is it?
The unit is a lockable ball valve with copper stubs and BS EN ISO 18082 NIST connectors inside a lockable enclosure. Access is via key lock, a break window, or an emergency release lever depending on the version. Pressure sensors are available for connection to the area alarm panel.
Features
- Available configurations: metal version with 22 mm, 28 mm or 42 mm valve, and polymer versions with 22 mm or 28 mm valve
- Access options: key lock, breakable window or emergency release lever
- Versions with pressure sensors for the area alarm panel, and versions without
- Meets the requirements of HTM 02-01 and HTM 2022 for medical gas pipeline systems and BS EN ISO 7396-1
- Equipped with BS EN ISO 18082 NIST connectors
- Suitable for flush or surface mounting
- Products from this brand are available according to project requirements and availability.
Applications
- Hospitals and medical complexes
- Operating theatres and intensive care units
- Emergency and inpatient departments
- Day-surgery centres and clinics
- Laboratories and supporting medical applications
- Expansion and medical gas pipeline refurbishment projects
Technical specifications
Technical specifications and brands are set per project and per the approved specification — contact us for the technical data suited to your case.
Related products
Single AVSU
Single-gas area valve service unit with pressure indication and an emergency break-glass window.
AVSU Module
Modular AVSU element assembled according to the number of gases required.
P3 AVSU Modules
Pre-piped AVSU modules on a steel backplate with 22–42 mm copper stubs, optionally with pressure sensors and an area alarm panel.
P3 Line Valves and Non-return Valves
Lockable line isolation valves, a NIST-connector version and non-return valves, all fully leak tested.
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Frequently asked questions
What is the difference between the metal and polymer versions?
The metal version is available up to a 42 mm valve in a lockable steel enclosure, while the polymer versions cover 22 mm and 28 mm. Selection depends on line size, location and the approved specification.
Have a project or an existing facility that needs an engineering review?
Our engineering team can review your requirement and propose a solution suited to the application, the site and the applicable requirements.