Say one main branch 300 mm dia meter branching off to DN 200 and DN 250 with individual valves to shut off. You need 2 Nos thrust type dismantling joints of sizes DN 200 and DN 250 plus two gate valves of size DN 200 and DN 250 in the chamber. 150 mm spacing between flanges to wall. Hence you need about 2000 x1200 chamber.
Published by Kumar Packiakumar, Senior Design Engineer at Tweed Shire Council NSW Australia
Say one main branch 300 mm dia meter branching off to DN 200 and DN 250 with individual valves to shut off. You need 2 Nos thrust type dismantling joints of sizes DN 200 and DN 250 plus two gate valves of size DN 200 and DN 250 in the chamber. 150 mm spacing between flanges to wall. Hence you need about 2000 x1200 chamber.