This option provides a means to mechanically hold the dock lift deck at the same level as the top of the pit. This option is typically utilized in applications with a full depth pit. The four mechanical arms are manually rotated into the engaged position when required. The arms are rotated out of the engaged position when not required.  In applications for which it is important for the lift platform to maintain level with the top of the pit, the night locks address concerns created by hydraulic valve leakage allowing the platform to very slowly lower over extended periods of time.
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