The Single Area Valve Service Units (AVSUs) are manufactured under BS EN 13485 Medical Devices: Quality Management Systems and Regulation (EU) 2017/745 (CE 2797).

They provide a local gas isolation facility for use during normal installation and maintenance or in the event of an emergency.

They are built in accordance with the HTM02-01, C11, and BS EN 18082 standards and are suitable for Oxygen (O₂), Nitrous Oxide (N₂O), Oxy-Nitrous Oxide (O₂/N₂O), Medical Air – 4 bar (MA₄), MA7, CO₂, and Vacuum (other gases on request).

Benefits & Features 

• The AVSU can be installed as a flush or surface-mounted.
• Housed in a steel, white epoxy-coated box and a key-operated 90° lock for security with 20,000 lock combinations.
• Gas identification is located on the body of the AVSU behind the window and is immovable.
• A large viewing window to the door gives an immediate indication of gas identification located on the body of AVSU, valve position, and flow direction.
• In an emergency, access can be gained by pulling the window, thus allowing access to the valve.
• An anti-tamper device can be fitted to the window and connected to our Digital Alarm and BMS to incorporate monitoring of all CPX AVSUs.
• The valve type is a 90° shut-off ball valve, which is operated via a red ergonomic handle. Each unit comes complete with a blanking plate which can be fitted to either side of the valve.
• Non-interchangeable NIST connectors are fitted upstream and downstream of the valve. Including 100% sealing serviceable non-return valves to allow the pipeline to be pressure tested and provide an easily accessible point for gas sampling.
• Pressure sensors shall be fitted inside the box to enable local monitoring and servicing via Copper Sensing Pipe.
• Side entry sizes available: 22mm, 28mm, 35mm, and 42mm (other entry versions available).

Standards

• HTM 02-01 and SHTM 02-01: Medical Gas Pipeline Systems
• BS EN 7396-1: Pipeline Systems for Compressed Medical Gases and Vacuum
• C11 NHS: Model Engineering Specification – Medical Gases
• EN 10524-2: Pressure
• BS EN 21969

Product Codes