DIN 4809-2:1986-11 Compensators made of elastomeric compound materials (rubber-compensators) for warmwater-heating-plants; constructional and connecting sizes
1986DIN 4809-2:1986-11 Compensators made of elastomeric compound materials (rubber-compensators) for warmwater-heating-plants; constructional and connecting sizes
1986DIN 4809-2:1986 Compensators made of elastomeric compound materials (rubber-compensators) for warmwater-heating-plants; constructional and connecting sizes