Low-leakage Steel Door | ST-R/Z15 for sale from TROX Australia

Low-leakage Steel Door | ST-R/Z15

Single and double leaf hinged doors for plant rooms, storage rooms, air handling units, filter chambers, or enclosures for machinery or electrical equipment

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Rectangular single leaf or double leaf doors that are robust and ensure only minimal leakage even in case of large differential pressures

Maximum width of 1100 mm, maximum height of 2115 mm
Maximum pressure loading of 1000 Pa, in closing direction; reinforced construction for up to 2000 Pa
Air leakage rate of approx. 0.6 l/s or 2 m³/h at 1000 Pa (for each door leaf)
Double skin door leaf made of galvanised sheet steel and with mineral wool infill
Door frame made of angle sections or U-channel sections
Two double lever locking devices, can be operated from both sides
APT rubber seal, temperature resistant up to 90 °C
Available in standard sizes and many intermediate sizes

Optional equipment and accessories

Sound insulating lining
Reinforced construction
Any combination of cylinder rim lock, mortice lock, pressure relief valve, inspection window and removable exterior locking levers
Powder-coated for outdoor installation

Application

Low-leakage steel doors of Type ST are used as separating elements for walk-in plant rooms, storage rooms, air handling units, filter chambers, or enclosures for machinery or electrical equipment.
Robust construction with very low air leakage rate even in case of large differential pressures
Powder-coated construction with increased corrosion resistance
Maximum pressure on the opening side is 1000 Pa (2000 Pa for reinforced construction)

Special characteristics

Variants with additional sound insulating lining (X construction variants) provide good sound absorption
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

Nominal sizes

ST (single leaf)
- B: 500, 600, 800 and 940 mm (intermediate sizes 400 – 1100 mm in increments of 1 mm)
- H: 1500, 1600, 1800 and 1940 mm (intermediate sizes 800 – 2115 mm in increments of 1 mm)
- Any combination of B × H
ST-D (double leaf)
- B: 1080, 1280, 1680 and 1960 mm (intermediate sizes 1080 – 2280 mm in increments of 1 mm)
- H: 1500, 1600, 1800 and 1940 mm (intermediate sizes 800 – 2115 mm in increments of 1 mm)
Any combination of B × H

Variants

ST: Low-leakage steel door
ST-V: Low-leakage steel door with reinforced leaf
ST-X: Low-leakage steel door with sound insulating lining
ST-X-V: Low-leakage steel door with sound insulating lining and reinforcing elements
ST-D: Double leaf low-leakage steel door
ST-D-V: Double leaf low-leakage steel door with reinforced leaves
ST-D-X: Double leaf low-leakage steel door with sound insulating lining
ST-D-X-V: Double leaf low-leakage steel door with sound insulating lining and reinforcing elements
R: Right hinge
L: Left hinge

Parts and characteristics

Door with perimeter seal
Double lever locking devices
Absorption material
Hinges
Door frame

Attachments

Angle section frame with welded fixing tabs
U-channel frame 115 × 40 × 4 mm
U-channel frame 240 × 40 × 4 mm with welded fixing tabs
Angle section frame without fixing tabs
Locks, inspection window, pressure relief valve, front locking lever: for the improvement and extension of the range of applications

Construction features

Double skin door leaf; skin thickness of 1 mm and 1.25 mm (opening side), respectively
Stiffeners at the level of the double lever locking devices
Additional central stiffener from H = 1800 mm
Double lever locking devices can be operated from both sides
Seal is temperature resistant up to 90 °C
Maximum pressure loading of 1000 Pa, in closing direction

Materials and surfaces

Door leaf and stiffeners made of galvanised sheet steel
Reinforced construction (V): Screw-fixed stiffeners
Absorption material is mineral wool
Door frame made of galvanised steel
Double lever locking devices made of aluminium diecast
APT rubber seal
Sound absorbing Bitumen K57 slabs
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 and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC
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

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