Description
- Manufactured by spraying on layers of polyester resin and fibreglass strands.
- Threaded lid with fast closing system for models of Ø200 manhole, and lid with nuts for models of Ø400 manhole.
- Fitted with collector arms and diffuser in unalterable plastic PVC.
- Fitted with pressure gauge, ¼” water drain, and air drainage.
- Sand drain of 2 ½”.
- Maximum working pressure: 2,5 Kg/cm2.
