What is BS EN 488 - District heating pipes about?
BS EN 488 discusses district heating pipes. District heating is the concept of having one or more central heat sources instead of individual boilers. BS EN 488 specifies requirements and test methods for factory-made thermally insulated bonded valve assemblies for hot water networks in accordance with EN 13941-1, comprising a steel valve, rigid polyurethane foam thermal insulation and a casing of polyethylene. The valve assembly could also include the following additional elements: measuring wires, spacers and diffusion barriers.
All valves, steel pipes and steel components used for manufacturing of valve assemblies under the scope of BS EN 488 as a minimum be delivered to the manufacturer with an inspection certificate 3.1 according to EN 10204. The inspection certificate shall on request be passed on to the customer.
Who is BS EN 488 - District heating pipes for?
BS EN 488 on district heating pipes is useful for:
- Heating pipes manufacturers
- Valve manufacturers
- Design engineers
- Quality control personnel
- Research and development facilities
Why should you use BS EN 488 - District heating pipes?
District heating (also known as heat networks or teleheating) is a system for distributing heat generated in a centralized location through a system of insulated pipes for residential and commercial heating requirements such as space heating and water heating. BS EN 488 discusses factory-made thermally insulated bonded valve assemblies that can withstand continuous operation with hot water at various temperatures in accordance with EN 13941-1 and at a minimum water temperature of 4 °C. To ensure a long service life of the end stem passing through the casing, the valve can withstand aggressive underground conditions such as heat, cold, moisture, ground and salty water. Where the stem construction passes the casing there shall be an arrangement to protect against water ingress to the thermal insulation.
Factory-made steel valves are provided with a stop device that can be replaced without removing the thermal insulation and the casing. Alternatively, an internal stop device can be used. The internal stop device is designed to resist a maximum strength torque of at least twice the maximum operating torque specified by the manufacturer with a minimum of 150 Nm in the fully open and fully closed position of the valve. Using an internal stop device, the valve stem is designed to resist a maximum strength torque of at least 1,5 times the designed strength torque of the stop device. BS EN 488 assists you specify requirements and test methods for factory-made steel valve assemblies for hot water networks.
What’s changed since the last update?
BS EN 488:2019 supersedes BS EN 488:2015. BS EN 488:2019 includes a technical change with respect to BS EN 488:2015:
- Editorial changes to the new structure of standards prepared by the Technical Committee CEN/TC 107
