Lifting top cap with your Finger
The Cap Balancer can reduce lifting force x10 times to open heavy top cap. The engineering technology of cap balancer help the operator easy to lift a heavy manhole weight 70 Kg. with 70 N-force and its safety for operator can open manhole himself from inside when the manhole close by an accident.
Over 40,000 circle times for open and close of spring tension life that made from new technology with antirust coating. the waterproof is optional for dairy cleaning. The special type can stop and hold in any position open angle.
the design as hinge weight reducer can install with top cap maximum load to 200 kg. all plane and slantwise