JZ-LL_img_13psd.png
Multileaf damper, variant JZ-LL-A2

Multileaf damper with actuator

JZ-LL_img_13psd.png
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JZ-LL 

For extremely low-leakage shut-off in ventilation and air conditioning systems

Rectangular multileaf dampers for volume flow and pressure control as well as for extremely low-leakage shut-off of ducts and openings in walls and ceiling slabs


  • Maximum dimensions 2000 × 1995 mm
  • Closed multileaf damper air leakage to EN 1751, classes 3 – 4, depending on size
  • Casing air leakage to EN 1751, class C
  • Aerofoil opposed action blades
  • Closed cell side seals meet increased hygiene requirements
  • Blades interconnected by external linkage
  • Available in standard sizes and many intermediate sizes

 


Optional equipment and accessories


  • Actuators: Open/close actuators, modulating actuators
  • Explosion-proof construction with pneumatic actuator or spring return actuator
  • Powder-coated construction

General information

Application

  • Stainless steel and powder-coated construction



Special characteristics

  • Aerofoil blades
  • Low-maintenance, robust construction
  • No parts with silicone
  • Available in standard sizes and many intermediate sizes
  • Closed cell side seals meet increased hygiene requirements


Classification

  • Closed blade air leakage to EN 1751




Test pressure up to 2000 Pa

  • Up to B = 599 mm, class 3
  • B = 600 – 1000 mm, class 4




Test pressure up to 1000 Pa

  • Up to B = 599 mm, class 3
  • B = 600 – 2000 mm, class 4


Nominal sizes

  • B: 200 – 2000 mm, in increments of 1 mm
  • Width subdivided (BM): 2001 – 4150 mm, in increments of 1 mm
  • H: 180, 345, 510, 675, 840, 1005, 1170, 1335, 1500, 1665, 1830, 1995 mm (intermediate sizes 183 – 1995 in increments of 1 mm, except for standard size H - 1 mm, H + 1 mm, H + 2 mm)
  • Height subdivided (HM): 1999 – 4066 mm, in increments of 1 mm
  • Any combination of B × H


Variants

  • JZ-LL: Multileaf damper with opposed blade action, made of galvanised sheet steel
  • JZ-LL-A2: Multileaf damper with opposed blade action, made of stainless steel


Constructions

  • Duct connection
  • Corner holes on both sides
  • G: Flange holes on both sides




Bearings

  • Plastic bearings, operating temperature 0 – 100 °C
  • M: Brass bearings, operating temperature 0 – 100 °C
  • E: Stainless steel bearings, operating temperature 0 – 100 °C




Blades

  • Only for steel multileaf dampers with brass or stainless steel bearings (JZ-...-M, JZ-...-E)
  • V: Reinforced blades available as from width 800 mm


Parts and characteristics

  • Ready-to-install shut-off damper
  • Blades with external linkage
  • Drive arm


Attachments

  • Quadrant stays and limit switches: Quadrant stays to adjust the damper blades (infinite adjustment) and for capturing the end positions
  • Open/close actuators: Actuators for opening and closing multileaf dampers
  • Modulating actuators: Actuators for infinite blade blade adjustment
  • Pneumatic actuators: Pneumatic actuators for opening and closing multileaf dampers
  • Explosion-proof actuators: Actuators for opening and closing multileaf dampers installed in potentially explosive atmospheres


Accessories

  • Installation subframe: Installation subframe for the fast and simple installation of multileaf dampers


Construction features

  • Rectangular casing, welded (P1: casing with screws), material thickness galvanised steel 1.25 mm, stainless steel A2 = 1.2 mm
  • Blades, material thickness 1 mm
  • Flanges on both sides, suitable for duct connection, either flange holes or corner holes
  • External linkage, robust and durable, consisting of the coupling rod and horizontal arms
  • Damper blade shafts, Ø12 mm, with notch to indicate the damper blade position (not for attachment ZS99)
  • With drive shaft as an attachment: For the position of the drive shaft see 'Dimensions and weight'
  • With actuator as an attachment: The actuator is always attached to the second blade from the top
  • Travel stop (angle section) ensures tight closure of the top and bottom blades
  • Blade tip seals and side seals
  • The construction and selection of materials comply with the criteria stipulated in European directives, referred to as ATEX (for use in potentially explosive atmospheres) for variants with brass or stainless steel bearings (-M, -E)


Material and surfaces

  • Casing and blades made of galvanised sheet steel or stainless steel
  • Blade shafts, drive arm and external linkage made of galvanised steel or stainless steel
  • Plastic, brass or stainless steel bearings
  • Blade tip seals made of PP/PTV plastic
  • Side seals made of closed cell PE foam
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, DB colour


Standards and guidelines

  • Casing air leakage to EN 1751, class C
  • Meets the general requirements of DIN 1946, Part 4, with regard to the acceptable closed multileaf damper air leakage
  • Multileaf damper sizes from B = 600 mm meet the increased requirements of DIN 1946, Part 4, with regard to the maximum closed multileaf damper air leakage


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 multileaf damper air leakage

Tehnički podaci

Function, Technical data, Quick sizing, Specification text, Order code

  • Function
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE
Schematic illustration of JZ-LL, JZ-LL-A2 JZ-LL_gc_01ai.png

① Casing

② Slide disc

③ Opposed blades

④ Side seal

⑤ Blade tip seal

⑥ Travel stop (angle section with seal)

⑦ Actuator

⑧ Transverse link

⑨ External linkage

Multileaf dampers with external linkage can have parallel action blades or opposed action blades. An external linkage transfers the synchronous rotational movement from the drive arm to the individual blades. Even very large multileaf dampers can be safely opened and closed with this type of linkage. Opposed action blades close at various speeds as the linkage includes a transverse link. This facilitates the closing process and reduces the closed multileaf damper air leakage.


 

Variants

  • Varianten


Preuzimanja

informacije o proizvodima

certifikati

priručnici za rad

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"}

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Navedite svoju poruku i vrstu zahtjeva
Tel.: +385 1 61 55 401 | +385 1 61 58 598

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Polja označena s (*) su obvezna polja.

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Zahvaljujemo na vašoj poruci!

Vaša je poruka poslana i ubrzo će biti obrađena.
Naš odjel za servisne zahtjeve što skorije će vas kontaktirati.
Za opća pitanja u vezi s proizvodima ili uslugama možete i nazvati:
Tel.: +385 1 61 55 401 | Faks: +385 1 61 58 598