Patent ID: 11898337
Assignee: XIAMEN R&T PLUMBING TECHNOLOGY CO., LTD.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 6:
7. The effort-saving flap-type drain valve according to claim 4, wherein
the first limiting face is provided with a guide post, and the elastic resetting element is a spring sleeved on the guide post; the second limiting face is provided with an accommodating slot for insertion of the guide post and the spring; and the spring abuts against the first limiting face and a bottom wall of the accommodating slot; or
the second limiting face is provided with a guide post, and the elastic resetting element is a spring sleeved on the guide post; the first limiting face is provided with an accommodating slot for insertion of the guide post and the spring; and the spring abuts against the second limiting face and a bottom wall of the accommodating slot.