22 mm x 1/2" UK manufactured compression fittings Made by BS EN ISO 9001:2008 companies, WRAS approved and kitemarked to BS 864-2:1983 or BS EN 1254:1998. They conform to both these standards apart from marking ; a fitting conforms to the standard with which it is marked. Except that sizes 4 mm and 5 mm are manufactured in the UK to BS 2051:2:1984.
https://www.bes.co.uk/straight-adaptor-uk-compression-22mm-x-1-2in-7812/38272Straight Adaptor UK Compression - 22mm x 1/2"https://www.bes.co.uk/media/catalog/product/s/t/straight-coupler-uk-compression-22mm-x-1-2in-7812-6_min_7812_P_1.jpg5.585.58GBPInStock/Pipe Tube & Fittings/Pipe Fittings/Compression4167<p>Compression x BSP parallel male. </p><p>22 mm x 1/2" UK manufactured compression fittings Made by BS EN ISO 9001:2008 companies, WRAS approved and kitemarked to BS 864-2:1983 or BS EN 1254:1998. They conform to both these standards apart from marking ; a fitting conforms to the standard with which it is marked. Except that sizes 4 mm and 5 mm are manufactured in the UK to BS 2051:2:1984.</p>BESt range00https://www.bes.co.uk/media/catalog/product/s/t/straight-coupler-uk-compression-22mm-x-1-2in-7812-2_min_7812_L_1.jpg5055150510553add-to-cartfacet_type:Couplerspecial_price:5.580000cat_multi_facet_l1:Fittingsfacet_size_2:22 mm x 1/2"more_sizes:9966,9967,9968,9969,6657,6658,6659,6660,6661,6662,6663,6664,6665,6666,6667,6668,6669,6670,6671,9011,6672,9012,9013,9014,9015,9016products_related:20396,17738,12616,21031,6962,21385,12615,6888sku:7812Fittings22 mm x 1/2"Coupler9966,9967,9968,9969,6657,6658,6659,6660,6661,6662,6663,6664,6665,6666,6667,6668,6669,6670,6671,9011,6672,9012,9013,9014,9015,901620396,17738,12616,21031,6962,21385,12615,688878125.580000No{"Type":"Straight Adaptor"}AdaptingBESt rangeBrassBoth22 mm