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Ives COR7G/COR9G Brass Gravity Door Coordinator
The Ives COR7G/COR9G is a gravity-operated door coordinator for paired door applications. When the active door is open, the coordinator holds it open until the inactive door bypasses; closing of the inactive door causes the strike plate to contact the cam and lift the arm, releasing the active door in proper sequence. Non-handed. UL Listed for fire doors. ANSI A156.3 Type 21B compliant. Available in 7" (COR7G) and 9" (COR9G) projections across six finishes.
Features
- Field-Adjustable: Gravity action arm and door bracket adjust on the job for alignment and smooth sequencing without special tools.
- Dual Roller System: Rubber roller on the main arm protects the astragal and door face during operation; nylon roller on the short arm runs silently.
- Non-Handed: Universal configuration installs on either hand without modification.
- Fire-Rated: UL Listed for fire door applications.
- ANSI A156.3 Type 21B: Meets the standard for gravity-type door coordinators in commercial applications.
- Brass Construction: Brass substrate for durability in commercial door frames.
Specifications
- Model: COR7G (7" projection) / COR9G (9" projection)
- ANSI/BHMA: ANSI A156.3 Type 21B
- Fire Rating: UL Listed for fire doors
- Door Hand Direction: Non-Handed
- Substrate: Brass
- Application: Commercial
- Available Finishes: 605 Bright Brass, 606 Satin Brass, 612 Satin Bronze, 613 Satin Bronze Oil-Rubbed, 625 Bright Chrome, 626 Satin Chrome
Manufacturer Resources
Ives Full Line Catalog
Product Specs
- Subcategory:
- Flush Bolts and Coordinators
- Product Group:
- Door Controls
- Product Subgroup:
- Door Coordinators
- Product Type:
- Door Coordinators
- ANSI/BHMA:
- ANSI A156.3 Type 21B
- Commercial/Residential:
- Commercial
- UL Listing Type:
- UL Listed for fire doors
- Product Model:
- COR7G/COR9G
- Door Hand Direction:
- Non-Handed
- Fire Rating:
- Yes
- Product Category:
- Door Controls
- Product Substrate:
- Brass
- Department:
- Door Hardware
Ives COR7G26D – Frequently Asked Questions
1) What does an Ives COR7G/COR9G gravity coordinator actually do on a pair of doors?
It forces the closing order on a pair of doors. With the active leaf open, the coordinator holds it back from closing until the inactive leaf has bypassed; as the inactive leaf closes, its strike plate contacts the cam and lifts the arm, releasing the active leaf to close behind it. That is the problem on any pair with an overlapping astragal, where an active leaf that beats the inactive one home slams into the astragal and leaves the opening unlatched. The COR7G/COR9G works on gravity, so there is no power, no hold-open device, and nothing to reset after each cycle.
2) Is the Ives COR7G coordinator approved for a fire-rated pair of doors?
Yes. The COR7G/COR9G gravity coordinator is UL Listed for fire door applications and meets ANSI A156.3 Type 21B, which is the coordinator classification a spec writer will call out on a fire-rated pair. It is a commercial-duty product, and the brass body is what carries that duty rating. If your opening is a labeled pair with an astragal and closers on both leaves, this is the class of device the drawing is asking for.
3) COR7G or COR9G, which projection do I order?
The model number is the projection. COR7G projects 7 inches, COR9G projects 9 inches, and that is the only difference between the two: same gravity mechanism, same non-handed body, same six finishes. The projection is how far the arm reaches off the frame stop to catch the active leaf, so the deeper the stop condition and the further the arm has to reach across the opening, the more you want the 9 inch. Order examples: COR7G26D is the 7 inch in 626 satin chrome, COR9G26D the 9 inch in the same finish.
4) Do I have to specify left hand or right hand for an Ives COR7G coordinator?
No handing to specify. The COR7G/COR9G is non-handed, so one part covers a left hand or right hand active leaf and you only decide two things on the order: 7 inch or 9 inch projection, and finish. For a property manager stocking spares across a building, that means one shelf item covers every pair regardless of which leaf is active.
5) The astragal and surface hardware crowd the frame stop on my pair of doors. What coordinator should I use instead of an Ives COR7G?
Look at the ABH 3700 Series, a full bar door coordinator supplied with a filler bar, which spreads the coordinating mechanism across a bar at the head rather than concentrating it at a single arm assembly. The Ives COR7G/COR9G is a gravity coordinator whose arm and strike plate work at the stop, with the strike plate contacting the cam to lift the arm as the inactive leaf closes, and it projects 7 inches on the COR7G and 9 inches on the COR9G. Both the ABH 3700 Series and the Ives COR7G/COR9G are UL recognized for fire door use, so the choice comes down to which mechanism clears what is already mounted on the doors.
6) Where does the Ives COR7G coordinator mount, on the frame or on the doors?
Both, and it splits up like this: the coordinator body mounts to the frame stop, while the door bracket and the strike plate mount to the door leaves. Frame prep is drilled and routed from the manufacturer template before the body goes on, then the bracket and strike are set and the gravity arm is adjusted for alignment. Plan the frame stop as occupied real estate when you are also laying out closers or overhead stops on the same head.
7) My existing pair is a little out of square, can a gravity coordinator still be set up to work?
That is what the adjustment is for. Both the gravity action arm and the door bracket adjust on the job, so the contact point and the release timing get dialed in against the opening you actually have rather than the one on the drawing. On a retrofit that is the difference between a coordinator that sequences cleanly and one that hangs up on every cycle. Set the frame body first, then adjust arm and bracket while cycling both leaves.
8) What finishes does the Ives COR7G/COR9G coordinator come in, and can I match the closers already on my doors?
Six finishes, and both projections are offered in every one of them: 605 bright brass, 606 satin brass, 612 satin bronze, 613 satin bronze oil-rubbed, 625 bright chrome, and 626 satin chrome. If your building is standardized on 626 satin chrome, which is the common commercial hardware finish, order COR7G26D or COR9G26D; for oil-rubbed bronze openings the 7 inch is COR7G10B. Since it sits on the frame stop above the doors, matching the closer and hinge finish is usually enough to make it disappear.
9) Gravity arm coordinator or a full bar coordinator, which type should I use?
Two different animals. The Ives COR7G/COR9G is a gravity arm type: a compact body on the frame stop with an arm that catches the active leaf, non-handed, adjustable in the field. A bar type such as the ABH 3700 Series full bar coordinator runs a bar across the full width of the opening and takes a filler bar to make up the length, so it is set up around the width of the specific opening rather than the reach of an arm. Both are used on fire-rated pairs, the ABH 3700 being UL Listed fire door compatible and the Ives being UL Listed for fire doors. Pick the arm type when you want minimal hardware on the stop and field adjustability; pick the bar type when the spec or the existing prep calls for a full-width coordinator.
10) What else can I use if the Ives gravity coordinator will not suit my opening?
Two other stop-mounted routes worth knowing. The Trimco 3094 is a UL stop mounted coordinator, the closest direct substitute in the same mounting position. The Trimco 3092 is a UL retracting arm coordinator, an arm type that retracts rather than lifting on a gravity cam, which is the one to look at when clearance across the opening is tight. Where the spec wants a full-width bar instead of an arm, the ABH 3700 Series full bar coordinator with filler bar is the other direction. All three are coordinators for pairs, so none of them changes the basic requirement that the inactive leaf closes first.
11) Do I need a door coordinator on a single door or on a pair with a mullion?
No, and buying one is money wasted. A coordinator only earns its keep where two leaves must close in a set order, which is a pair with an overlapping astragal and closers on both leaves. A single door has no sequence to control, and a pair split by a mullion has each leaf latching independently against the mullion, so there is nothing to coordinate. Save the COR7G/COR9G for the astragal pairs and put nothing on the mullioned openings.
12) What is the difference between the Ives COR7G/COR9G gravity coordinator and a retracting arm coordinator like the Trimco 3092?
The Trimco 3092 is a retracting arm coordinator, so its arm withdraws as part of the sequencing action. The Ives COR7G/COR9G is a gravity coordinator: it holds the active leaf open until the inactive leaf bypasses, and the inactive door's strike plate contacts the cam to lift the arm and release the sequence. The Ives unit uses a rubber roller to protect the astragal and doors and a nylon roller on the short arm, is non-handed, and carries UL Listing for fire doors; the Trimco 3092 is likewise UL. Both accomplish sequencing on a pair of doors, but they are not the same prep, so match the coordinator to the frame preparation you are cutting.
13) I am standardizing coordinators on fire-rated pairs across a facility. Which models besides the Ives COR7G/COR9G carry UL recognition for fire doors?
The ABH 3700 Series full bar coordinator is UL Listed fire door compatible, and both the Trimco 3092 retracting arm coordinator and the Trimco 3094 stop mounted coordinator are UL models. The Ives COR7G/COR9G is UL Listed for fire doors and meets ANSI A156.3 Type 21B for commercial door coordinator performance. Standardizing on one mechanism type matters more than the badge here: the Ives is a gravity coordinator in brass, non-handed, which keeps a single part number covering both hands of opening across a building.
14) Are the Trimco 3092 and Trimco 3094 the same coordinator, and how do they line up against the Ives COR7G/COR9G?
They are two different Trimco models: the 3092 is a retracting arm coordinator and the 3094 is a stop mounted coordinator, so a part number swap between them is not a like-for-like exchange. The Ives COR7G/COR9G is a gravity coordinator whose arm and door bracket adjust in the field, offered in a 7 inch projection as the COR7G and a 9 inch projection as the COR9G, and it is non-handed. When quoting a replacement, confirm which mechanism the existing frame is prepped for before switching families.
15) Will a stop-mounted coordinator chew up the astragal or bang every time the doors close?
The contact points are rollers, not bare metal. A rubber roller takes the load against the astragal and door face to keep the operation quiet and to stop it marking the astragal, and the short arm carries a nylon roller for silent travel. On a hospital corridor or a hotel cross-corridor pair that cycles all day, that is the practical difference between a coordinator you notice and one you do not.
16) Will an Ives COR7G coordinator hold up on a high traffic corridor pair?
Built for it. The body substrate is brass and the product is rated commercial, tested to ANSI A156.3 Type 21B, which is the coordinator performance class used on commercial openings. The wear points are the rubber and nylon rollers rather than metal on metal, which is what keeps a device cycling on a school or hospital cross-corridor pair from marking the astragal over time.
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Does the Ives COR7G26D come with a warranty?
Absolutely. The Ives COR7G26D is backed by a manufacturer’s warranty.
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