GESTRA RK 49 Instrucciones De Montaje página 11

Danger
The valve is under pressure during operation.
When loosening flanged connections or sealing plugs, hot water,
steam, corrosive fluids or toxic gases may escape. This presents the
risk of severe burns and scalds to the whole body or severe cases of
poisoning.
Installation and maintenance work should only be carried out when the
system is depressurized.
The valve becomes hot or extremely cold during operation. This
presents the risk of severe burns to hands and arms. Installation and
maintenance work should only be carried out at room temperatures.
Sharp edges on internals present a danger of cuts to hands. Always
wear industrial gloves for installation and maintenance work.