Opposed blades
Application
Special features
Classification
Air leakage with closed multileaf damper according to EN 1751:
Test pressure up to 2000 Pa
Nominal sizes
Construction
Duct connection
Bearings
Blades
Only for steel or stainless steel multileaf dampers with brass or stainless steel bearings (JZ-...-M, JZ-...-E)
Parts and characteristics
Attachments
Accessories
Construction features
Materials and surfaces
Standards and guidelines
Maintenance
① Casing
② Opposed blades
③ Blade tip seal
④ Travel stop (angle section with seal)
⑤ Actuator
⑥ Transverse link
⑦ 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 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 independent of the direction of the airflow. This closing force must be countered, or overcome. The blade angle α with the largest torque dependently of among other things, on the fan characteristics.
Nominal sizes | 200 × 180 – 2000 × 1995 mm |
Operating temperature | 0 to 100 °C |
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 – 344 | 0.03 | 0.06 | 0.09 | 0.12 | 0.15 | 0.18 | 0.21 | 0.24 | 0.27 | 0.3 |
345 – 509 | 0.06 | 0.11 | 0.17 | 0.23 | 0.28 | 0.34 | 0.4 | 0.45 | 0.51 | 0.57 |
510 – 674 | 0.08 | 0.17 | 0.25 | 0.33 | 0.42 | 0.5 | 0.58 | 0.67 | 0.75 | 0.83 |
675 – 839 | 0.11 | 0.22 | 0.33 | 0.44 | 0.55 | 0.66 | 0.77 | 0.88 | 0.99 | 1.1 |
840 – 1004 | 0.14 | 0.27 | 0.41 | 0.55 | 0.69 | 0.82 | 0.96 | 1.1 | 1.23 | 1.37 |
1005 – 1169 | 0.16 | 0.33 | 0.49 | 0.66 | 0.82 | 0.98 | 1.15 | 1.31 | 1.47 | 1.64 |
1170 – 1334 | 0.19 | 0.38 | 0.57 | 0.76 | 0.95 | 1.14 | 1.33 | 1.52 | 1.72 | 1.91 |
1335 – 1499 | 0.22 | 0.43 | 0.65 | 0.87 | 1.09 | 1.3 | 1.52 | 1.74 | 1.96 | 2.17 |
1500 – 1664 | 0.24 | 0.49 | 0.73 | 0.98 | 1.22 | 1.47 | 1.71 | 1.95 | 2.2 | 2.44 |
1665 – 1829 | 0.27 | 0.54 | 0.81 | 1.08 | 1.36 | 1.63 | 1.9 | 2.17 | 2.44 | 2.71 |
1830 – 1994 | 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 permissible static differential pressure [Δpmax t] 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 (-MV, -E-V) | 3500 | 3000 | 2700 | 2500 | 2300 | 2100 | 2000 |
Sound power level for a closed multileaf damper LWA [dB(A)]
Δpt | Area B × H [m²] | |||||||
---|---|---|---|---|---|---|---|---|
0.14 | 0.2 | 0.4 | 0.6 | 0.8 | 1.2 | 2 | 4 | |
100 | 43 | 45 | 48 | 50 | 51 | 53 | 55 | 58 |
200 | 51 | 53 | 56 | 58 | 59 | 61 | 63 | 66 |
500 | 62 | 63 | 66 | 68 | 69 | >70 | >70 | >70 |
1000 | 69 | >70 | >70 | >70 | >70 | >70 | >70 | >70 |
1500 | >70 | >70 | >70 | >70 | >70 | >70 | >70 | >70 |
2000 | >70 | >70 | >70 | >70 | >70 | >70 | >70 | >70 |
Quick sizing tables provide a good overview of the sound power levels and differential pressures that can be expected. Approximate intermediate values can be interpolated. Precise intermediate values and spectral data can be calculated with our Easy Product Finder design program. The sound power levels LWA 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 type A).
JZ-LL, JZ-LL-A2, JZ-HL, differential pressure and sound power level
v [m/s] | Damper blade position α | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | 7.5 | 22 | 34 | 250 | 63 |
1 | <5 | <30 | <5 | <30 | 8 | 26 | 85 | 53 | 1000 | 83 |
2 | <5 | <30 | <5 | <30 | 30 | 46 | 345 | 73 | >2000 | >90 |
4 | <5 | 41 | 10 | 44 | 120 | 65 | 1385 | >90 | >2000 | >90 |
6 | <5 | 52 | 24 | 56 | 270 | 77 | >2000 | >90 | >2000 | >90 |
8 | 10 | 60 | 42 | 64 | 480 | 85 | >2000 | >90 | >2000 | >90 |
This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design program.
Rectangular multileaf dampers for volume flow and pressure control as well as for low-leakage shut-off of 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. Closed multileaf damper air leakage according to EN 1751, class 2 (B ≤ 600 mm, class 1) Casing leakage according to EN 1751, class C.
Special features
Materials and surfaces
Construction
Duct connection
Bearings
Blades
Only for steel or stainless steel multileaf dampers with brass or stainless steel bearings (JZ-...-M, JZ-...-E)
Technical data
Nominal sizes: 200 × 180 mm – 2000 × 1995 mm
Sizing data
Air-regenerated noise
JZ-HL | – | G | – | E | – | V | – | L | / | 1000 × 1005 | / | ER | / | Z64 | / | NC | / | P1 – RAL … |
| | | | | | | | | | | | | | | | | | | | |||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |||||||||
Duct connection | Flange holes on both sides |
Bearings | Brass bearings |
Construction of blades | Reinforced blades |
Operating side | Left side |
Nominal size | 1200 × 675 mm |
Installation subframe | With |
Attachments | Spring return actuator, 20 Nm, 24 V AC/DC |
Damper blade position | Power off to CLOSE |
User interface | Standard construction |
JZ, JZ-HL, standard sizes
H | No. of blades | Spindle position | |
---|---|---|---|
X | Damper blade | ||
180 | 1 | 90 | 1 |
345 | 2 | 90 | 1 |
510 | 3 | 90 | 1 |
675 | 4 | 255 | 2 |
840 | 5 | 420 | 3 |
1005 | 6 | 420 | 3 |
1170 | 7 | 585 | 4 |
1335 | 8 | 585 | 4 |
1500 | 9 | 750 | 5 |
1665 | 10 | 750 | 5 |
1830 | 11 | 915 | 6 |
1995 | 12 | 915 | 6 |
JZ, JZ-HL, intermediate sizes
H | No. of blades | Spindle position | Y | |
---|---|---|---|---|
X | Damper blade | |||
183 – 343 | 1 | 90 | 1 | 1.5 – 81.5 |
348 – 508 | 2 | 90 | 1 | 1.5 – 81.5 |
513 – 673 | 3 | 90 | 1 | 1.5 – 81.5 |
678 – 838 | 4 | 255 | 2 | 1.5 – 81.5 |
843 – 1003 | 5 | 420 | 3 | 1.5 – 81.5 |
1008 – 1168 | 6 | 420 | 3 | 1.5 – 81.5 |
1173 – 1333 | 7 | 585 | 4 | 1.5 – 81.5 |
1338 – 1498 | 8 | 585 | 4 | 1.5 – 81.5 |
1503 – 1663 | 9 | 750 | 5 | 1.5 – 81.5 |
1668 – 1828 | 10 | 750 | 5 | 1.5 – 81.5 |
1833 – 1993 | 11 | 915 | 6 | 1.5 – 81.5 |
JZ, JZ-LL, JZ-HL, weight
H | B | |||
---|---|---|---|---|
200 | 400 | 600 | 800 | |
180 | 4 | 6 | 8 | 9 |
345 | 6 | 8 | 10 | 12 |
510 | 7 | 10 | 13 | 16 |
675 | 10 | 13 | 16 | 20 |
840 | 11 | 15 | 19 | 23 |
1005 | 11 | 17 | 22 | 27 |
1170 | 13 | 19 | 25 | 31 |
1335 | 15 | 22 | 28 | 35 |
1500 | 16 | 23 | 30 | 37 |
1665 | 17 | 25 | 33 | 41 |
1830 | 18 | 27 | 35 | 44 |
1995 | 19 | 29 | 38 | 47 |
Quadrant stays and limit switches
Order code detail | Description | Limit switch | Function |
---|---|---|---|
Z04 | Hold open device | – | |
Z05 | Hold open device | 1 | Damper blade position CLOSED |
Z06 | Hold open device | 1 | Damper blade position OPEN |
Z07 | Hold open device | 2 | Damper blade positions CLOSED and OPEN |
Open/close actuators
Order code detail | Description | Function | Supply voltage | Torque | Auxiliary switch |
---|---|---|---|---|---|
Z12 | SM230A | 1-wire-control 2-wire-control (3-point) | 100 – 240 V AC | 20 Nm | – |
Z13 | GM230A | 1-wire-control –2-wire-control (OPEN-CLOSE) | 100 – 240 V AC | 40 Nm | – |
Z14 | SM24A | 1-wire-control 2-wire-control (3-point) | 24 V AC/DC | 20 Nm | – |
Z15 | GM24A | 1-wire-control –2-wire-control (OPEN-CLOSE) | 24 V AC/DC | 40 Nm | – |
Z16 | SM230A | 1-wire-control 2-wire-control (3-point) | 100 – 240 V AC | 20 Nm | S2A |
Z17 | GM230A | 1-wire-control 2-wire-control (3-point) | 100 – 240 V AC | 40 Nm | S2A |
Z18 | SM24A | 1-wire-control 2-wire-control (3-point) | 24 V AC/DC | 20 Nm | S2A |
Z19 | GM24A | 1-wire-control 2-wire-control (3-point) | 24 V AC/DC | 40 Nm | S2A |
Z43 | NM230A | 1-wire-control 2-wire-control (3-point) | 100 – 240 V AC | 10 Nm | – |
Z45 | NM24A | 1-wire-control 2-wire-control (3-point) | 24 V AC/DC | 10 Nm | – |
Z47 | NM230A | 1-wire-control 2-wire-control (3-point) | 100 – 240 V AC | 10 Nm | S2A |
Z49 | NM24A | 1-wire-control 2-wire-control (3-point) | 24 V AC/DC | 10 Nm | S2A |
Minimum torque of multileaf damper has to be considered when selecting the actuator.
Open/close actuators, fast-running
Order code detail | Description | Function | Supply voltage | Torque | Auxiliary switch |
---|---|---|---|---|---|
ZS21 | SMQ24A | 1-wire-control | 24 V AC/DC | 16 Nm | – |
ZS22 | SMQ24A | 1-wire-control | 24 V AC/DC | 16 Nm | S2A |
Only for nominal sizes with a minimum torque not exceeding 16 Nm.
Open/close actuators, spring return
Order code detail | Description | Function | Supply voltage | Torque | Auxiliary switch |
---|---|---|---|---|---|
ZF01 | NF24A | Supply voltage on/off | 24 V AC/DC | 10 Nm | – |
ZF02 | NFA | Supply voltage on/off | 24 – 240 V AC 24 – 125 V DC | 10 Nm | – |
ZF03 | NF24A-S2 | Supply voltage on/off | 24 V AC/DC | 10 Nm | integrated |
ZF04 | NFA-S2 | Supply voltage on/off | 24 – 240 V AC 24 – 125 V DC | 10 Nm | integrated |
ZF06 | SF24A | Supply voltage on/off | 24 V AC/DC | 20 Nm | – |
ZF07 | SFA | Supply voltage on/off | 24 – 240 V AC 24 – 125 V DC | 20 Nm | – |
ZF08 | SF24A-S2 | Supply voltage on/off | 24 V AC/DC | 20 Nm | integrated |
ZF09 | SFA-S2 | Supply voltage on/off | 24 – 240 V AC 24 – 125 V DC | 20 Nm | integrated |
ZF11 | EF24A | Supply voltage on/off | 24 V AC/DC | 30 Nm | – |
ZF12 | EF230A | Supply voltage on/off | 100 – 240 V AC | 30 Nm | – |
ZF13 | EF24A-S2 | Supply voltage on/off | 24 V AC/DC | 30 Nm | integrated |
ZF14 | EF230A-S2 | Supply voltage on/off | 100 – 240 V AC | 30 Nm | integrated |
Minimum torque of multileaf damper has to be considered when selecting the actuator.
Modulating actuators
Order code detail | Description | Function | Supply voltage | Torque | Auxiliary switch |
---|---|---|---|---|---|
Z20 | SM24A-SR | 2 – 10 V DC | 24 V AC/DC | 20 Nm | – |
Z21 | GM24A-SR | 2 – 10 V DC | 24 V AC/DC | 40 Nm | – |
Z51 | NM24A-SR | 2 – 10 V DC | 24 V AC/DC | 10 Nm | – |
Minimum torque of multileaf damper has to be considered when selecting the actuator.
Modulating actuators, spring return
Order code detail | Description | Function | Supply voltage | Torque | Auxiliary switch |
---|---|---|---|---|---|
ZF05 | NF24A-SR | 2 – 10 V DC | 24 V AC/DC | 10 Nm | – |
ZF10 | SF24A-SR | 2 – 10 V DC | 24 V AC/DC | 20 Nm | – |
ZF15 | EF24A-SR | 2 – 10 V DC | 24 V AC/DC | 30 Nm | – |
Minimum torque of multileaf damper has to be considered when selecting the actuator.
Double acting pneumatic actuators, including explosion-proof actuators
Order code detail | Description | Damper blade safety function | Operating pressure | Torque at 6 bar | Limit switch | Solenoid valve | |
---|---|---|---|---|---|---|---|
(1) | (2) | ||||||
Z60 | Z60 EX | DR030 | – | 1.2 – 6 bar | 35 Nm | – | |
Z61 | Z61 EX | DR030 | power off to close/open | 1.2 – 6 bar | 35 Nm | – | 24 V DC |
Z62 | Z62 EX | DR030 | power off to close/open | 1.2 – 6 bar | 35 Nm | – | 230 V AC |
Z63 | Z63 EX | DR030 | – | 1.2 – 6 bar | 35 Nm | 2 | |
Z64 | Z64 EX | DR030 | power off to close/open | 1.2 – 6 bar | 35 Nm | 2 | 24 V DC |
Z65 | Z65 EX | DR030 | power off to close/open | 1.2 – 6 bar | 35 Nm | 2 | 230 V AC |
Z66 | Z66 EX | DR060 | – | 1.2 – 6 bar | 70 Nm | – | |
Z67 | Z67 EX | DR060 | power off to close/open | 1.2 – 6 bar | 70 Nm | – | 24 V DC |
Z68 | Z68 EX | DR060 | power off to close/open | 1.2 – 6 bar | 70 Nm | – | 230 V AC |
Z69 | Z69 EX | DR060 | – | 1.2 – 6 bar | 70 Nm | 2 | |
Z70 | Z70 EX | DR060 | power off to close/open | 1.2 – 6 bar | 70 Nm | 2 | 24 V DC |
Z71 | Z71 EX | DR060 | power off to close/open | 1.2 – 6 bar | 70 Nm | 2 | 230 V AC |
(1) Standard
(2) Explosion-proof (only with brass or stainless steel bearings)
Minimum torque, which depends on the nominal size of multileaf damper, and the operating pressure have to be considered when selecting the actuator.
Single acting pneumatic actuators, including explosion-proof actuators
Order code detail | Description | Damper blade safety function | Operating pressure | Torque at 6 bar | Limit switch | Solenoid valve | |
---|---|---|---|---|---|---|---|
(1) | (2) | ||||||
Z72 | Z72 EX | SC060 SO060 | pressure off to close/open | 6 bar | 30 Nm | – | – |
Z73 | Z73 EX | SC060 SO060 | power off and pressure off to close/open | 6 bar | 30 Nm | – | 24 V DC |
Z74 | Z74 EX | SC060 SO060 | power off and pressure off to close/open | 6 bar | 30 Nm | – | 230 V AC |
Z75 | Z75 EX | SC060 SO060 | pressure off to close/open | 6 bar | 30 Nm | 2 | – |
Z76 | Z76 EX | SC060 SO060 | power off and pressure off to close/open | 6 bar | 30 Nm | 2 | 24 V DC |
Z77 | Z77 EX | SC060 SO060 | power off and pressure off to close/open | 6 bar | 30 Nm | 2 | 230 V AC |
(1) Standard
(2) Explosion-proof (only with brass or stainless steel bearings)
Explosion-proof open/close actuators, spring return actuators
Order code detail | Description | Function | Supply voltage | Torque | Auxiliary switch |
---|---|---|---|---|---|
Z1EX | ExMax15-SF | 2-wire-control (3-point) | 24 – 240 V AC/DC | 15 Nm | integrated |
Z3EX | ExMax30-SF | 2-wire-control (3-point) | 24 – 240 V AC/DC | 30 Nm | integrated |
Only with brass or stainless steel bearings
Z1EX: Only for nominal sizes with a minimum torque up to 15 Nm.
Steel or stainless steel multileaf dampers, width, no. of flange holes per side
B | Number of holes n |
---|---|
200 – 287 | 0 |
288 – 537 | 2 |
538 – 787 | 3 |
788 – 1037 | 4 |
1038 – 1287 | 5 |
1288 – 1537 | 6 |
1538 – 1787 | 7 |
1788 – 2000 | 8 |
Steel or stainless steel multileaf dampers, height, no. of flange holes per side
H | Number of holes n |
---|---|
180 – 211 | 0 |
212 – 461 | 2 |
462 – 711 | 3 |
712 – 961 | 4 |
962 – 1211 | 5 |
1212 – 1461 | 6 |
1462 – 1711 | 7 |
1712 – 1961 | 8 |
1962 – 1995 | 9 |
Shaft end projection A [mm]
Drive shaft | JZ-LL | JZ-LL-A2 | JZ-HL |
---|---|---|---|
Standard spindle | 30 | 26 | 30 |
ZS99 – extended spindle | 250 | 180 | 250 |
ZS991 – square shaft 9 mm | 37 | 37 | 37 |
ZS992 – square shaft 10 mm | 70 | – | 60 |
Installation and commissioning
Width subdivided, width [mm]
B₁ | B |
---|---|
2550 | 1200 |
2950 | 1400 |
3350 | 1600 |
3750 | 1800 |
4150 | 2000 |
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Contact
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Veuillez préciser votre message et le type de demande
Tel.: +32 (0) 2/522 07 80
Contact
Merci pour votre message !
Votre message a été envoyé et sera traité dans les plus brefs délais.
Notre département de traitement des demandes prendra contact avec vous dès que possible.
Pour les questions d'ordre général concernant les produits ou services, vous pouvez aussi nous appeler :
Tel.: +32 (0) 2/522 07 80