Manually operated valves work with simple levers, padels where operator applies force to operate the valve.spring force is used to recover the position of valve.
Spring force is used to recover the position of valve. Manually operated valves work with simple levers or paddles where the operator applies force to operate the valve.
Manually operated valves work with simple levers or paddles where the operator applies force to operate the valve. Spring force is used to recover the position of valve.
Manually operated valves work with simple levers or paddles where the operator applies force to operate the valve. Spring force is used to recover the position of valve.