4" Spring Hinges
Pack of 1
Supplied as a Pair
4" Spring Hinges (Single Action) Stainless Steel
- Dimensions: Length: 102mm Width: 76mm Thickness: 3mm
- Finishes: Satin Stainless Steel
- Supplied as: Pair
Spring hinges have gained popularity in dwellings which require self-closing fire doors such as flats and multiple storey town hoses. The traditional perco type chain closer does the job, but it can only be adjusted by removing from the door. Spring hinges can be tensioned after fitting. They can be used on fire doors up to 1/2 hour rated.
Simple Spring Tensioning
The hinge is fitted in the traditional way and only once the door is decorated do the hinges need to be tensioned. The tensioning is performed by putting a hexagon key, which is supplied, into the top of the hinge knuckle and rotating the spring. Once the desired tension is achieved a fixed pin is placed through the knuckle and into the spring barrel.
Companion Fire Door Hinges (See Related Items)
Three hinges must be used on fire doors and in most situations the middle hinge can be an un-sprung companion hinge. If necessary the middle hinge can be a sprung hinge, which can be tensioned or left un-tensioned depending on the actual situation. The majority of installations will only need the top and bottom hinge tensioned, if in any doubt we suggest a trial door is hung before ordering any bulk quantity. Please contact customer services if you would like to order a trial set, on sale or return. Please note the sprung hinges are sold in pairs and the companion hinges are sold individually.
Change to Building Regulations
As of 6th April 2007, it is no longer a building regulations requirement that a self closing device, such as a perco or spring hinges, be fitted to internal fire doors in dwellings. It has become the responsibility of the occupants to ensure that fire doors are closed at night. Closing devices are still required on flat entrance doors and garage doors leading into a dwelling. However, these closers now have to comply with BSEN 1154, which currently means they need to be overhead door closers.