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Europe
- Grade 1 · 3 per BHMA A156.4
- 500,000 to 2 million cycles
- Non-handed, tri-pack mounting
- Adjustable spring 1 – 6
- Backcheck, sweep and latch valves
- Fire-rated listings to 3 h
Range
| Duty | Grade | Body | Spring | Cycles |
|---|---|---|---|---|
| Standard | 3 | Cast aluminium | Size 3 or 4 | 500,000 |
| Heavy | 1 | Cast aluminium, forged arm | 1 – 4 / 3 – 6 | 2 million |
| Heavy – universal | 1 | Cast aluminium | adjustable | 2 million |
| Heavy – slim | 1 | Slim cast aluminium | adjustable | 2 million |
| Maximum | 1 | Cast steel | 1 – 6 | 2 million |
| Light commercial / residential | – | Compact | fixed | – |
All commercial closers are non-handed and mount regular arm, top jamb or parallel arm from one box, with independent sweep and latch speed valves and adjustable hydraulic backcheck that cushions the door if it is thrown open.
Why closers matter
A closed door stops fire and smoke, keeps conditioned air in and keeps security doors latched. Every fire door needs a self-closing device; on accessible routes the opening force and closing speed must also meet the code.
Normes et exigences par marché
Les codes selon lesquels World Steel conçoit, fabrique et documente ce produit – et les principales exigences géométriques et de charge sur chaque marché.
États-Unis
- ANSI/BHMA A156.4Door controls – closers
- NFPA 80 · UL 10CHardware on fire doors
- ICC A117.1 / ADAAccessible operating hardware
- Opening force
- 5 lbf max. on interior accessible doors
Australie / NZ
- AS 1905.1Hardware on fire-resistant doorsets
- AS 1428.1Accessible door hardware
Synthèse fournie à titre indicatif – le cahier des charges du projet, l'édition du code adoptée et l'autorité compétente prévalent.
Finitions
| Finition | Normes / remarques |
|---|---|
| Finishes | AL aluminium, US10B bronze, US3, US19 black (by series) |
Questions fréquentes
Which side of the door does the closer go?
Regular arm mounts on the pull side; parallel arm mounts on the push side – preferred for exterior and corridor doors because it is less exposed to vandalism.
