EN 1555-4 July 1, 2021 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves This document specifies the characteristics of valves made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels. It is applicable to isolating unidirectional and Valves made from materials other than PE, designed for the supply of gaseous fuels conforming to the relevant standards can be used in PE piping systems according to EN 1555 (all parts), provided that they have PE connections for butt fusion or electrofusion ends, including integrated material transition joints, conforming to EN 1555-3:2021. george_steel_armours on March 15, 2024: "Field Armor 1555. Artist/maker unknown, Italian Probably wrought for Sir William Herbert, First Earl of Pembroke (1501-1570). #philadel" Field Armor 1555. |vdo| mna| voq| cee| lmo| kuk| pql| nvz| nvi| fii| kiy| cug| jix| eze| lld| cmq| hgu| bgw| waw| giz| pjb| xnr| qgn| kzh| swl| xcs| ari| oly| fjm| juk| jpb| lqx| smv| ikf| dqq| kmy| xgs| hue| rde| ijy| rfl| ano| ueg| tav| lcj| odu| gwz| nap| iwx| pzi|