UL_img_01psd.png
Non-return damper, variant UL-1

UL_img_01psd.png
UL_img_04psd.png
UL_img_03psd.png

UL

For installation into walls or rectangular ducts

Non-return dampers prevent unwanted airflows against the intended airflow direction when the system is not in operation


  • Maximum differential pressure: 100 Pa
  • Maximum width of 1600 mm, maximum height of 1615 mm
  • Frame with fixing holes along the perimeter
  • Available in standard sizes and intermediate sizes (in increments of 1 mm)
  • Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals

 

Optional equipment and accessories

  • Installation subframe
  • Powder coating, RAL CLASSIC colour

 


 


 

General information

Application

  • Type UL non-return dampers for installation into internal walls and rectangular ducts
  • Prevention of unwanted airflows against the intended airflow direction when the system is not in operation
  • Blades close automatically when the system is shut down
  • Maximum differential pressure: 100 Pa


Special characteristics

  • Any intermediate sizes within the standard size range are available
  • operating temperature: –20 – 80 °C
  • Maximum differential pressure: 100 Pa
  • Non-return dampers are opened and closed by the airflow; no actuator is required
  • Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals for sound attenuation


Nominal sizes

  • B: 200, 400, 600, 800, 1000, 1200, 1400, 1600 mm (intermediate sizes: 201 – 1599 mm in increments of 1 mm)
  • H: 215, 315, 415, 515, 615, 715, 815, 1015, 1215, 1415, 1615 mm (intermediate sizes: 216 – 1614 mm, in increments of 1 mm)
  • Any combination of B × H


Variants

  • UL-1: Non-return damper for airflows directed towards the installation side
  • UL-2: Non-return damper for airflows directed towards the rear side (suction)


Parts and characteristics

  • Frame
  • Blades with low-friction bearings
  • Blade restrictors
  • Blade tip seals
  • Bottom travel stop (angle section)
  • Visible mullion from B = 997 mm


Parts and characteristics

  • Border
  • Blades with low-friction bearings
  • Blade restrictors
  • Blade tip seals
  • Bottom travel stop (angle section)
  • Visible mullion from B = 997 mm


Construction features

  • Frame, material thickness 1.75 mm, with fixing holes
  • Blades, material thickness 1.0 mm
  • Additional side bar with fixing holes to accommodate the blade shafts and integral blade restrictors
  • Blade restrictors prevent the blades from opening beyond a certain angle


Accessories

  • Installation subframe: Installation subframe for the fast and simple installation of mechanically self-powered dampers


Technical data

  • Nominal sizes: 200 × 215 to 1600 × 1615 mm
  • Volume flow rate range: 110 – 6460 l/s or 396 – 23256 m³ /h at 2.5 m/s
  • Total differential pressure: 25 Pa at 2.5 m/s
  • Maximum differential pressure in closing direction: 100 Pa
  • Operating temperature: –20 to 80 °C

Description

Variants

  • UL-1: Non-return damper for airflows directed towards the installation side
  • UL-2: Non-return damper for airflows directed towards the rear side (suction)


Parts and characteristics

  • Border
  • Blades with low-friction bearings
  • Blade restrictors
  • Blade tip seals
  • Bottom travel stop (angle section)
  • Visible mullion from B = 997 mm


Construction features

  • Frame, material thickness 1.75 mm, with fixing holes
  • Blades, material thickness 1.0 mm
  • Additional side bar with fixing holes to accommodate the blade shafts and integral blade restrictors
  • Blade restrictors prevent the blades from opening beyond a certain angle





Nominal sizes

  • B: 200, 400, 600, 800, 1000, 1200, 1400, 1600 mm (intermediate sizes: 201 – 1599 mm in increments of 1 mm)
  • H: 215, 315, 415, 515, 615, 715, 815, 1015, 1215, 1415, 1615 mm (intermediate sizes: 216 – 1614 mm, in increments of 1 mm)
  • Any combination of B × H


Technical information

Function, Tecnical data, Quick sizing, Specification text, Order code, Related products

  • Function
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE
  • RELATED PRODUCTS
Schematic illustration of UL-1
UL_gc_01ai.png

1 Frame

2 Blades (closed)

3 Mullion from B = 997 mm

4 Travel stop (angle section)

5 Blades (open)

6 Blade restrictor

7 Blade tip seals

8 Side bar

UL_gc_01ai.png
UL_gc_02ai.png

Non-return dampers open and close automatically. When the system is in operation, the blades open when air flows. When the system is shut down, the blades close due to their weight. They safely prevent air from flowing against the intended airflow direction.

Dimensions and weight, Product details

  • DIMENSIONS AND WEIGHT
  • PRODUCT DETAILS
UL-1
UL-1
UL-1
UL-1

Dimensions

  • B: 200 – 1600 mm, intermediate sizes 201 – 1599 in increments of 1 mm
  • H: 215 – 1615 mm, intermediate sizes 216 – 1614 mm in increments of 1 mm

Flow cross section to calculate the airflow velocity

  • A = B × H

Unit of measure for B and H: m




Weight [kg]

H

B

2003004005006008001000120014001600
2153334456789
31533445678910
41534455678910
515445567891011
6154556789101112
71555678910111213
815567891011121314
101578910111213141516
12159101112131415161718
141511121314151617181920
161513141516171819202122

Downloads

product information

  • Product data sheet Type UL

    UL_PD_2022_09_21_DE_en Product data sheet 510 KB pdf

certificates

  • Declaration of conformity or declaration of incorporation Type UL

    Declaration of conformity or declaration of incorporation 130 KB pdf

  • Non-CE Manufacturer's statement UL

    UL_NotCE_2022_02_08_14_43_02_DE_en Certificate 1,7 MB pdf

operation manuals

  • Installation manual Type UL

    2018/10/A00000053072 Installation manual 440 KB pdf

TROX Services

production {"x-frame-options"=>"SAMEORIGIN", "x-xss-protection"=>"1; mode=block", "x-content-type-options"=>"nosniff", "x-download-options"=>"noopen", "x-permitted-cross-domain-policies"=>"none", "referrer-policy"=>"strict-origin-when-cross-origin", "strict-transport-security"=>"max-age=31536000; includeSubDomains", "content-type"=>"text/html; charset=utf-8"}

Share page

Recommend this page

Recommend this page by sending a link by mail.

Fields marked with an (*) are required fields.

Share page

Thank you for your recommendation!

Your recommendation has been sent and should arrive shortly.

Contact

We are here for you

Please specify your message and type of request.
Tel.: +971 4 3417448 | Fax: +971 4 3417449

Your message
Your message to

Fields marked with an (*) are required fields.

Contact

Thank you for your message!

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +971 4 3417448 | Fax: +971 4 3417449

Contact

We are here for you

Please specify your message and type of request.
Tel.: +971 4 3417448 | Fax: +971 4 3417449

Attachment (max. 10MB)
Your message
Your message to

Fields marked with an (*) are required fields.

Contact

Thank you for your message!

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +971 4 3417448 | Fax: +971 4 3417449

TROX Logo
By clicking the button, you allow us to provide you with an excellent website experience and easy shopping processes. These cookies include ones that are necessary for the operation of the site and for the control of our services and applications, as well as ones that are used solely for statistical purposes, for convenience settings or to display personalized content. You can decide which categories you want to allow and you can adjust the data utilisation settings based on your individual requirements. Please note that, depending on the settings that you have selected, all functionalities of the page might not be available. You can change your selection at any time.
Cookie settings