Description
Variants
- R: Right hinge
- L: Left hinge
- 11: Angle section frame with welded fixing tabs
- 21: Angle section frame without fixing tabs
Parts and characteristics
- Door with perimeter seal
- Double lever locking device
- Absorption material
- Hinges
- Frame
Attachments
- Locks, inspection window, front locking lever: for the improvement and extension of the range of applications
Construction features
- Double skin door leaf; skin thickness of 0.04 in and 0.05 in (opening side), respectively
- Stiffeners at the level of the double lever locking devices
- Double lever locking device, can be operated from both sides
- Seal is temperature resistant up to 194 °F
- Maximum pressure loading of 4.02 in w.g. (in closing direction), up to nominal size 24 × 24 in 8.03 in w.g.; air leakage rate of approx. 1.27 cfm at 4.02 in w.g., up to nominal size 24 × 24 in approx. 2.3 cfm at 8.03 in w.g.
Materials and surfaces
- Door leaf and stiffeners made of galvanised sheet steel
- Absorption material is mineral wool
- Door frame made of galvanised steel 2 × 2 × 0.2 in
- Double lever locking device made of aluminium diecast
- APT rubber seal
- P1: Powder-coated, RAL CLASSIC colour
- PS: Powder-coated, NCS or DB colour
Mineral wool
- To DIN 4102, fire rating class A2, non-combustible
- RAL quality mark RAL-GZ 388
- Biosoluble according to TRGS 905 and EU directive 97/69/EG
- Inert to fungal and bacterial growth
Maintenance
- Maintenance-free as construction and materials are not subject to wear
- Contamination should be removed as it may lead to corrosion and to increased closed door air leakage
Function
Functional description
Low-leakage inspection access doors are low-leakage separating elements for rooms or other enclosures.
When the door is being closed, i.e. when the double locking levers are being turned, the perimeter seal is fully pressed against the frame. As a consequence, the air leakage rate is extremely low even in case of high differential pressures.
Schematic Illustration of BS
① Door
② Frame (angle section 2 × 2 × 0.2 in)
③ Absorption material
④ Seal
⑤ Double lever locking device
Specification Text
Low-leakage inspection access doors as separating elements for air handling units, filter chambers, or enclosures for machinery or electrical equipment.
Ready-to-install component that consists of a door leaf with double lever locking device, absorption material, seal and hinges, and a frame.
Air leakage rate on the opening side is approx. 1.27 cfm at 4.02 in w.g.
Special characteristics
- U-value: 1.02 W/(m²K) at 8 W/(m²K) for internal spaces (air not in motion) and 25 W/(m²K) for outside (air in motion)
- Optional door frame without fixing tabs (-21) but with flange holes
Materials and surfaces
- Door leaf and stiffeners made of galvanised sheet steel
- Absorption material is mineral wool
- Door frame made of galvanised steel 2 × 2 × 0.2 in
- Double lever locking device made of aluminium diecast
- APT rubber seal
- P1: Powder-coated, RAL CLASSIC colour
- PS: Powder-coated, NCS or DB colour
Mineral wool
- To DIN 4102, fire rating class A2, non-combustible
- RAL quality mark RAL-GZ 388
- Biosoluble according to TRGS 905 and EU directive 97/69/EG
- Inert to fungal and bacterial growth
Technical data
- Nominal sizes: 12 × 12 – 32 × 32 in
- Maximum pressure on the opening side is 4.02 in w.g., up to nominal size 24 × 24 in 8.03 in w.g.
- Weighted sound reduction index: 43 – 46 dB
This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.
