Multi Leaf Shut off Dampers Type ‘JZ’
FOR EXTREMELY LOW-LEAKAGE SHUT-OFF IN 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 blade 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
Customise & Add To
Your Quote Request List
You must be logged in to view product options
Product Information
Optional equipment and accessories
- Actuators: Open/Close actuators, modulating actuators
- Explosion-proof construction with pneumatic actuator or spring return actuator
- Powder-coated construction
- 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
Duct connection
- Corner holes on both sides
- G: Flange holes on both sides
- Plastic bearings, operating temperature 0 – 100 °C
- M: Brass bearings, operating temperature 0 – 100 °C
- E: Stainless steel bearings, operating temperature 0 – 100 °C
Only for steel or stainless steel multileaf dampers with brass or stainless steel bearings (JZ-…-M, JZ-…-E)
- V: reinforced blades
- Ready-to-install shut-off damper
- Blades with external linkage
- Drive arm
- Quadrant stays and limit switches: Quadrant stays to adjust the damper blades (stepless adjustment) and for capturing the end positions
- Open/Close actuators: Actuators for opening and closing multileaf dampers
- Modulating actuators: Actuators for stepless 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
- Installation subframe: Installation subframe for the fast and simple installation of multileaf dampers
- Rectangular casing, welded (P1: casing with screws), material thickness 1.25 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 and horizontal arms
- Blade shafts, Ø12 mm, with notch to indicate the 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 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
- Construction and materials comply with the EU directive and guidelines for use in potentially explosive atmospheres (ATEX) for variants with brass or stainless steel bearings (-M, -E)
- 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
- Casing air leakage to EN 1751, class C
- Meets the general requirements of DIN 1946, part 4, with regard to the acceptable closed blade air leakage
- Multileaf damper sizes from B = 600 mm meet the increased requirements of DIN 1946, part 4, with regard to the maximum closed blade air leakage
- 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 blade air leakage