Design Hardware UL Gravity Door Coordinators

A gravity coordinator mounts at the head of a pair and holds the active leaf open until the inactive leaf has closed, so the two leaves close in the right sequence instead of jamming on the astragal. The Design Hardware gravity coordinator uses a nylon and rubber roller arm that the active door rides against, with a set screw adjustment to tune the hold point.

Yes, that is exactly the case a coordinator is for. When one leaf carries an overlapping astragal, both doors released at once will let the active leaf beat the inactive leaf shut and hang up on the astragal. The Design Hardware gravity coordinator holds the active leaf back until the inactive leaf is home. On pairs with no astragal and no sequencing requirement, you don't need one.

Plan for the arm swing, not just the body. The base measures 5-3/8 x 15/16 inches and the unit projects 6-3/4 inches, so you need clear head space in front of the frame face for that projection, free of closer arms, stops, or overhead holders. Tight soffit conditions are where gravity coordinators get ruled out.

It is. A set screw adjustment lets you shift the point at which the arm releases the active leaf, so you can dial in the sequence on site once both closers are set. Expect to tune it after the closers are adjusted, not before, since closing speed changes when the release needs to happen.

Bar coordinators run the full width of the opening across the frame soffit and suit pairs where you have a flat soffit and want the hardware tucked up out of the way. A gravity coordinator like the Design Hardware unit mounts as a compact body on the frame with a 6-3/4 inch projecting roller arm, so it needs open space in front of the frame but does not need a continuous soffit run sized to your opening width. If your opening already has soffit-mounted stops or overhead holders eating the run, the gravity type is the one that fits.

No. The coordinator only controls the order in which the leaves close. Each leaf still needs its own closer to actually close and latch it, and the Design Hardware gravity coordinator is ordered and installed in addition to those closers, not in place of one. Set the closers first, then adjust the coordinator's set screw to match.

Three: 613 dark bronze, 626 satin chrome, and 606 satin brass. For a property manager standardizing a building, 626 satin chrome is the usual match for commercial lever and closer hardware, and 613 dark bronze pairs with dark anodized or bronze frames.

The body is cast brass, with the roller in nylon and rubber. Cast brass holds thread for the set screw adjustment and stands up to the repeated arm contact you get on a high traffic pair, and it takes the plated finishes (dark bronze, satin chrome, satin brass) directly.