Whenever boosted air extraction is required, such as when showering, the valve can be opened by operating the chain, and the exhaust air flw rate will then incease.
It can be closed manually to the normal position
Specifications (All dimensions in mm)
Capacity Charts for Exhaust Air Valves with chain control- OPK
|OPF||125K||Click for detailed chart|
|OPK||100K||Click for detailed chart|
|OPK||160K||Click for detailed chart|