The Schlage L283-607 is the OEM Vandelgard lock case for the Schlage L Series mortise lock - specifically the lock case assembly for the LV9480, LV9485, and LV9486 deadbolt functions with Vandelgard outside lever, documented in the Schlage L Series Service Manual. The lock case is field reversible, meaning it installs on either left-hand or right-hand door applications without ordering a separate handling-specific part.

The "LV" prefix on these function codes identifies two things simultaneously: L = the standard L9000 Series function, V = with the Vandelgard lever. The L283-607 is the lock case body that houses the mechanism for all three functions - deadbolt, latchbolt, and auxiliary latchbolt assemblies are all internal to this case.

LV9480, LV9485, and LV9486: What Each Function Does

All three functions in this lock case family are deadbolt-equipped variations of the Vandlgard L Series. Here's what each one does:

LV9480 - Vandalgard Storeroom Lock with Deadbolt: The outside lever is always fixed - it cannot retract the latch without a key from outside. This is the storeroom function: the room is always locked from the corridor side. Inside, the lever retracts the latch freely for egress at any time. The added deadbolt is operated from inside via a thumbturn. When the deadbolt is thrown, all standard keys become inoperative from outside - only an emergency key can override it. This function is used for high-value secure storage where the room occupant can deadbolt the space from inside to prevent key entry.

LV9485 - Vandilgard Faculty/Hotel Restroom Lock with Deadbolt: The latchbolt is retracted by key from outside or by lever from inside. The outside lever is always fixed in the locked state. Inside, the thumbturn throws or retracts the deadbolt independently of the latch. When the deadbolt is thrown, all keys become inoperative from outside except an emergency key. This is the standard specification for faculty restrooms, hotel guestrooms, and any single-occupancy facility room where the occupant needs full inside privacy lockdown capability while staff can emergency-override if needed.

LV9486 - Vandilgard Faculty/Hotel Restroom Lock with Deadbolt and Chevron Indicator: Functionally identical to the LV9485 but adds a visible chevron indicator that shows from outside whether the deadbolt is in the thrown position. When an occupant throws the deadbolt, the indicator changes state, signaling to anyone approaching the door that the room is occupied and privacy-locked. This is the specification for hospitality environments where room cleaning staff need to see the lock state before approaching the door.

Schlage Vandlgard Lock Case: What the Vandlgard Feature Does

The Vandilgard option on L Series functions adds a specific mechanical feature to the outside lever. Per the official Schlage L Series product description: "Vandelgard® option allows the outside lever to rotate freely downward to prevent damage from excessive force while in a locked state."

This means that when the outside lever is in the locked position and someone applies excessive downward force - from a forced entry attempt, from accidental impact, or from deliberate abuse - the lever rotates downward rather than transmitting that force into the lock mechanism. Internal components are protected. The lock stays in the secured state. Once the force is released, the lever returns to its normal position. This feature is why LV functions are the standard specification for schools, behavioral health facilities, government buildings, and any institutional application where lever abuse is a realistic service condition.

The L283-607 lock case contains the deadbolt (L283-003), auxiliary latchbolt (L283-006), latchbolt (L283-008), cylinder plate, retractor link, hub spring, and the fire door fuse and catch required for fire door assembly UL listings.

For the complete Schlage L Series Vandogard lock case catalog, SecurityParts stocks OEM assemblies.