Novaporte TCOV and TSOV Manhole to be welded and adjustable manhole with collar, with opening diameter 273, closing bu screws. New : USED TO CONNECT SAFETY VALVE. Cover with y-shaped bar with seal (opening 180°) Opening diam. 273 1,5 mm thick Base Locking with star-shaped cap (bakelite) Flange Ht:30 Collar
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