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Multileaf damper, variant JZ-P-A2
Multileaf damper with actuator
Parallel blades
Parallel blades
Opposed blades
Opposed blades
JZ
For shutting off the airflow in air conditioning systems
Rectangular multileaf dampers for volume flow and pressure control as well as for shutting off ducts and openings in walls and ceiling slabs
- Maximum dimensions 2000×1995mm
- Casing air leakage to EN1751, classC
- Aerofoil parallel or opposed action blades
- Blades interconnected by external linkage (for parallel or opposed blade action)
- Available in standard sizes and many intermediate sizes
- Can be combined with external weather louvres
Optional equipment and accessories
- Actuators: Open/close actuators, modulating actuators
- Explosion-proof construction with pneumatic actuator or spring return actuator
- Powder-coated construction
Allgemeine Informationen
Application
- Multileaf dampers as a control element in the volume flow rate and differential pressure control in ventilation and air conditioning systems
- For shutting off ducts and openings in walls and ceiling slabs
- Parallel action blades are preferably used for opening/closing
- Due to their characteristics, opposed action blades are preferable for variable operation
- Steel and stainless steel variants with brass or stainless steel bearings are suitable for use in potentially explosive atmospheres (ATEX)
Special characteristics
- Aerofoil blades
- Low-maintenance, robust construction
- No parts with silicone
- Available in standard sizes and many intermediate sizes
Nominal sizes
- B: 200–2000mm, in increments of 1mm
- Width subdivided (BM): 2001–4150mm, in increments of 1mm
- H: 180, 345, 510, 675, 840, 1005, 1170, 1335, 1500, 1665, 1830, 1995mm (intermediate sizes 183 – 1995in increments of 1 mm, except for standard size H - 1 mm, H + 1 mm, H + 2 mm)
- Height subdivided (HM): 1999–4066mm, in increments of 1mm
- Any combination of B×H
Variants
- JZ-S: Multileaf damper with opposed blade action, made of galvanised sheet steel
- JZ-P: Multileaf damper with parallel blade action, made of galvanised sheet steel
- JZ-S-A2: Multileaf damper with opposed blade action, made of stainless steel
- JZ-P-A2: Multileaf damper with parallel blade action, made of stainless steel
Construction
Duct connection
- Corner holes on both sides
- G: Flange holes on both sides
Bearings
- Plastic bearings, operating temperature -20–100°C
- M: Brass bearings, operating temperature -20–150°C
- E: Stainless steel bearings, operating temperature -20–150°C
Blades
Only for steel or stainless steel multileaf dampers with brass or stainless steel bearings (JZ-...-M, JZ-...-E)
- V: Reinforced bladesavailable 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 for the infinite adjustment of the multileaf dampers and for capturing the end positions
- Open/close actuators for opening and closing multileaf dampers
- Modulating actuators for variable damper blade positions
- Pneumatic actuators for opening and closing multileaf dampers
- Explosion-proof actuators for opening and closing multileaf dampers
Accessories
- Installation subframes for the fast and simple installation of multileaf dampers
Construction features
- Rectangular casing, welded (P1: casing with screws), material thickness galvanised steel 1.25mm, stainless steel A2 = 1.2 mm
- Blades, material thickness 1mm
- Flanges on both sides, suitable for duct connections, either corner holes or flange holes
- External linkage, robust and durable, consisting of the coupling rod and horizontal arms
- Damper blade shafts, Ø12mm, with notch to indicate the damper blade position (not for ZS99)
- With spindle as an attachment: For the position of the spindle, see "Dimensions and weights"
- With actuator as an attachment: The actuator is always attached to the second blade from the top
- Construction and the selection of materials comply with the criteria stipulated in EU 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 arms and external linkages made of galvanised steel or stainless steel
- Plastic, brass or stainless steel bearings
- P1: powder-coated, RAL CLASSIC colour
- PS: powder-coated, DB colour
Standards and guidelines
- Casing air leakage to EN1751, classC
Maintenance
- Maintenance-free, given that construction and the materials used are not subject to wear
- Contamination should be removed as it may lead to corrosion and to increased air leakage in closed multileaf dampers
Technical information
Function, Technical data, Quick sizing, Specification text, Order code
- Function
- TECHNICAL DATA
- QUICK SIZING
- SPECIFICATION TEXT
- ORDER CODE
Schematic illustration of JZ-S
①Casing
② Opposed blades
③ External linkage
④ Actuator
⑤ Transverse link
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 air leakage in closed multileaf dampers.
The torques for operating multileaf dampers must be dimensioned in such a way that the damper can be safely opened and closed. For closure, the torque must suffice to ensure complete shut-off by the blades. Opening is initiated without the impact of aerodynamic forces. When air flows through the damper, the aerodynamic forces of the airflow create a closing force (torque) on the blades; this happens independently of the direction of the airflow. This closing force must be countered, or overcome. The blade angle α with the largest torque depends, among other things, on the fan characteristics.
| Nominal sizes | 200 × 180 – 2000 × 1995mm |
| Operating temperature | -20 to 100°C |
JZ-*, JZ-*-A2, minimum torques [Nm]
| H | B | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 200 | 400 | 600 | 800 | 1000 | 1200 | 1400 | 1600 | 1800 | 2000 | |
| 180 – 1995 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Steel and stainless steel multileaf dampers, free cross-sectional area [m2]
H | B | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
200 | 400 | 600 | 800 | 1000 | 1200 | 1400 | 1600 | 1800 | 2000 | |
| 180 | 0.03 | 0.06 | 0.09 | 0.12 | 0.15 | 0.18 | 0.21 | 0.24 | 0.27 | 0.3 |
| 345 | 0.06 | 0.11 | 0.17 | 0.23 | 0.28 | 0.34 | 0.4 | 0.45 | 0.51 | 0.57 |
| 510 | 0.08 | 0.17 | 0.25 | 0.33 | 0.42 | 0.5 | 0.58 | 0.67 | 0.75 | 0.83 |
| 675 | 0.11 | 0.22 | 0.33 | 0.44 | 0.55 | 0.66 | 0.77 | 0.88 | 0.99 | 1.1 |
| 840 | 0.14 | 0.27 | 0.41 | 0.55 | 0.69 | 0.82 | 0.96 | 1.1 | 1.23 | 1.37 |
| 1005 | 0.16 | 0.33 | 0.49 | 0.66 | 0.82 | 0.98 | 1.15 | 1.31 | 1.47 | 1.64 |
| 1170 | 0.19 | 0.38 | 0.57 | 0.76 | 0.95 | 1.14 | 1.33 | 1.52 | 1.72 | 1.91 |
| 1335 | 0.22 | 0.43 | 0.65 | 0.87 | 1.09 | 1.3 | 1.52 | 1.74 | 1.96 | 2.17 |
| 1500 | 0.24 | 0.49 | 0.73 | 0.98 | 1.22 | 1.47 | 1.71 | 1.95 | 2.2 | 2.44 |
| 1665 | 0.27 | 0.54 | 0.81 | 1.08 | 1.36 | 1.63 | 1.9 | 2.17 | 2.44 | 2.71 |
| 1830 | 0.3 | 0.6 | 0.89 | 1.19 | 1.49 | 1.79 | 2.08 | 2.38 | 2.68 | 2.98 |
| 1995 | 0.32 | 0.65 | 0.97 | 1.3 | 1.62 | 1.95 | 2.27 | 2.6 | 2.92 | 3.25 |
Intermediate sizes: Interpolate values between widths.
Maximum permitted differential pressure Δpmax t [Pa] in the case of closed multileaf damper
| Construction | B | ||||||
|---|---|---|---|---|---|---|---|
800 | 1000 | 1200 | 1400 | 1600 | 1800 | 2000 | |
| Standard construction | 2500 | 2000 | 1650 | 1400 | 1250 | 1100 | 1000 |
| Brass bearings (-M) | 3000 | 2500 | 2200 | 1950 | 1750 | 1600 | 1500 |
| Stainless steel bearings (-E) | 3000 | 2500 | 2200 | 1950 | 1750 | 1600 | 1500 |
| Reinforced blades (-M-V, -E-V) | 3500 | 3000 | 2700 | 2500 | 2300 | 2100 | 2000 |
JZ-S, JZ-S-A2, sound power level LWA [dB (A)] in the case of closed multileaf damper
Δpt [Pa] | Area B×H[m²] | |||||||
|---|---|---|---|---|---|---|---|---|
0.14 | 0.2 | 0.4 | 0.6 | 0.8 | 1.2 | 2 | 4 | |
| 100 | 57 | 58 | 61 | 63 | 64 | 66 | 68 | 71 |
| 200 | 63 | 65 | 68 | 69 | 71 | 72 | 75 | 77 |
| 500 | 71 | 72 | 76 | 78 | 79 | 81 | 83 | 84 |
1000 | 78 | 80 | 82 | 84 | 85 | 88 | 90 | >90 |
1500 | 81 | 83 | 86 | 88 | 89 | >90 | >90 | >90 |
2000 | 84 | 85 | 89 | >90 | >90 | >90 | >90 | >90 |
JZ-P, JZ-P-A2, sound power level LWA [Pa] in the case of closed multileaf damper
Δpt [Pa] | Area B×H[m²] | |||||||
|---|---|---|---|---|---|---|---|---|
0.14 | 0.2 | 0.4 | 0.6 | 0.8 | 1.2 | 2 | 4 | |
| 100 | 57 | 58 | 61 | 63 | 64 | 64 | 68 | 71 |
| 200 | 63 | 65 | 68 | 69 | 71 | 71 | 75 | 78 |
| 500 | 71 | 72 | 76 | 78 | 79 | 79 | 85 | 87 |
1000 | 78 | 80 | 82 | 84 | 85 | 85 | 89 | >90 |
1500 | 81 | 82 | 86 | 88 | 89 | 89 | >90 | >90 |
2000 | 84 | 86 | 89 | >90 | 90 | >90 | >90 | >90 |
Quick sizing tables provide a good overview of the expected sound power levels and differential pressures. Approximate intermediate values can be interpolated. Precise intermediate values and spectral data can be calculated with our Easy Product Finder design program.The LWA sound power levels apply to multileaf dampers with a cross-sectional area (B × H) of 1 m².The differential pressures apply to multileaf dampers installed in ducts (installation typeA).
JZ-S, JZ-S-A2, differential pressure and sound power level
v [m/s] | Damper blade positionα | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| OPEN | 20° | 40° | 60° | 80° | ||||||
Δpt [Pa] | LWA [dB(A)] | Δpt [Pa] | LWA [dB(A)] | Δpt [Pa] | LWA [dB(A)] | Δpt [Pa] | LWA [dB(A)] | Δpt [Pa] | LWA [dB(A)] | |
0.5 | <5 | <30 | <5 | <30 | <5 | <30 | 22 | 44 | 255 | 67 |
| 1 | <5 | <30 | <5 | <30 | 8 | 38 | 85 | 59 | 1010 | 82 |
| 2 | <5 | 31 | <5 | 35 | 28 | 53 | 335 | 74 | >2000 | >90 |
| 4 | <5 | 46 | 10 | 50 | 110 | 68 | 1395 | 89 | >2000 | >90 |
| 6 | <5 | 55 | 22 | 59 | 250 | 77 | >2000 | >90 | >2000 | >90 |
| 8 | 8 | 61 | 40 | 65 | 440 | 83 | >2000 | >90 | >2000 | >90 |
JZ-P, JZ-P-A2, differential pressure and sound power level
v [m/s] | Damper blade positionα | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| OPEN | 20° | 40° | 60° | 80° | ||||||
Δpt [Pa] | LWA [dB(A)] | Δpt [Pa] | LWA [dB(A)] | Δpt [Pa] | LWA [dB(A)] | Δpt [Pa] | LWA [dB(A)] | Δpt [Pa] | LWA [dB(A)] | |
0.5 | <5 | <30 | <5 | <30 | <5 | <30 | <5 | <30 | 12 | 42 |
| 1 | <5 | <30 | <5 | <30 | <5 | <30 | 12 | 40 | 45 | 60 |
| 2 | <5 | <30 | <5 | 30 | 10 | 41 | 45 | 57 | 185 | 77 |
| 4 | <5 | 41 | 6 | 48 | 40 | 58 | 170 | 75 | 750 | >90 |
| 6 | <5 | 51 | 14 | 58 | 85 | 69 | 385 | 85 | 1685 | >90 |
| 8 | <5 | 58 | 25 | 65 | 150 | 76 | 685 | >90 | >2000 | >90 |
Rectangular multileaf dampers for volume flow and pressure control as well as for shutting off ducts and openings in walls and ceiling slabs.Ready-to-operate unit which consists of the casing, aerofoil blades and the blade mechanism.Flanges on both sides, suitable for duct connection.The blade position is indicated externally by a notch in the blade shaft extension.Casing air leakage to EN1751, class C.
Special characteristics
- Aerofoil blades
- Low-maintenance, robust construction
- No parts with silicone
- Available in standard sizes and many intermediate sizes
Material and surfaces
- Casing and blades made of galvanised sheet steel or stainless steel
- Blade shafts, drive arms and external linkages made of galvanised steel or stainless steel
- Plastic, brass or stainless steel bearings
- P1: powder-coated, RAL CLASSIC colour
- PS: powder-coated, DB colour
Construction
Duct connection
- Corner holes on both sides
- G: Flange holes on both sides
Bearings
- Plastic bearings, operating temperature -20–100°C
- M: Brass bearings, operating temperature -20–150°C
- E: Stainless steel bearings, operating temperature -20–150°C
Blades
Only for steel or stainless steel multileaf dampers with brass or stainless steel bearings (JZ-...-M, JZ-...-E)
- V: Reinforced bladesavailable from width 800 mm
Technical data
- Nominal sizes: 200×180mm–2000×1995mm
- Operating temperature: -20to100°C
Sizing data
- qv (m³/h)
- Δpt [Pa]
Air-regenerated noise
- LPA [dB(A)]
Life cycle assessment
A life cycle assessment is available for the product series in form of an Environmental Product Declaration (EPD) that has been checked and published by a programme holder.
| JZ | – | P | – | A2 | – | G | – | M | – | – | L | / | 1000 × 1005 | / | ER | / | Z64 | / | NC | / | P1 - RAL 9010 | |
| | | | | | | | | | | | | | | | | | | | | | | | | |||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
1 Type
JZ Multileaf damper
2 Function
S Opposed (standard)
P Parallel
3 Material
No entry: galvanised steel
A2 Stainless steel
4 Duct connection
No entry: corner holes on both sides,
G Flange holes on both sides (no corner holes)
5 Bearings
No entry: plastic bearings
M Brass bearings
E Stainless steel bearings
6 Construction of blades
Only for steel or stainless steel multileaf dampers with brass or stainless steel bearings
V Reinforced blades, available from width 800 mm
7 Operating side
No entry: right
L left
8 Nominal size [mm]
Specify size width × height
Galvanised steel variants are available with the width or height subdivided
Width > 2000: width subdivided
Height > 1995: height subdivided
9 Installation subframe
No entry: without installation subframe
ER With installation subframe (duct connection G only)
10 Attachments
No entry: without attachments
Z04 – Z07 Hold open device
Z12 – Z51 Actuators
ZF01 – ZF15 Spring return actuators
Z60 – Z77 Pneumatic actuators
Explosion-proof actuators
Z1EX, Z3EX Electrical
Z60EX – Z77EX Pneumatic
11 Damper blade safety function
Only with spring return actuators or pneumatic actuators
NO pressure off/power off to OPEN (Normally Open)
NC pressure off/power off to CLOSE (Normally Closed)
12 Surface
No entry: standard construction
P1 powder-coated, specify RAL CLASSIC colour
Gloss level
RAL 9010 GU 50
RAL 9006 GU 30
All other RAL colours GU 70
Order example: JZ–S–G–M–V–L/800×510/ER/Z43
| Function | Opposed |
| Material | Galvanised steel |
| Duct connection | Flange holes on both sides |
| Bearings | Brass bearings |
| Construction of blades | Reinforced blades |
| Operating side | Left |
| Nominal size | 800 × 510mm |
| Installation subframe | With |
| Attachments | Actuator, 10 Nm, 230 V AC, 3-point |
| User interface | Standard construction |
Variants
- VARIANTEN
Multileaf damper, variant JZ-S
Multileaf damper with quadrant stay
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product information
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Contact
We are here for you
Please specify your message and type of request
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265
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.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265
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