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Linear Slot Diffusers and Bar Grilles Of Shahrokhi MFG Co
Citation preview
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LINEAR SLOT DIFFUSERS & BAR GRILLES
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LINEAR SLOT DIFFUSERS
& GRILLES
APPLICATION
Shahrokhi linear slot diffusers & grilles are
designed to suit H.V.A.C applications for
ceiling mounting.Linear attractive view of these grilles
considered in continuous architectural and
internal decoration such as Amphitheatres ,
Conference halls, Banks, Hotels and etc
(figure 1).
������������ �����������������
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:.��;����� 89�,�<� �'='�� ;�>�� 5�.��?�����5,�����
(,���#@�A����B��-�'������/�5C����&?# �<�&�.��
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI�
SH.LIN.M
DESCRIPTION
These diffusers constructed in 1 through 8
slots and maximum up to 3m. length.
Other preferences in these diffusers are light
weight , easy and quick installation.These diffusers are used for supply, return
and exhaust air.
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��.����
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI L
(FIGURE 2)
NO.OF
SLOTS1
36 71 106 140 175 210 245 280A
86 121 156 190 225 260 295 330B
2 3 4 5 6 7 8
A=LISTED SIZE-12.5
B20.0
ALL DIMENSION IN mm.
33.0
60.0
(FIGURE 4)
For over lengths and connection several
grilles use special pieces (Alignment strips)
(figure 3).
Either is possible to closed air flow path by
using special endcaps on right, left or behind
sides of diffusers (figure 4).Select the type of endcaps is relative to
installatin of diffusers location.
K��� P��������� �������S�G�4 '����� #I5���� G�1���� �
������/��;#,���/������T7 ��� �7T'��U� �� '�)B
��F�����
��� &#.���� TB��������������-��(5?�� B�8 ���85��7
U�4R��� ��&��6���V,� '�� �����( I6����WS�<(,��
��X��������7.����T������� ���%M��5T�
�������P#T��� ������+4.��"�����Y�6���$�.�Z�R#.�
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIF
(FIGURE 3)
ALIGNMENT STRIP
WITHOUT END CAP
BLANK OFF SHEET
END CAP ON BOTH
STRAIGHT CUT
END CAP ARRANGEMENT
END CAP 45 CUT
(RIGHT OR LEFT)
It may be connected the diffusers in corners
with any request angles by using prepared
pieces (figure 5).
Moved and adjustable deflector blades of
this type of linear diffuser cause to diffusion
with horizontal and vertical airflow patterns
(figure 6).
���� ��R9������K�� ����� [����������������-��������8��
�4#��� P������������ �������#� ,�\56�D�)B�J7�
��]��������7.
^�K�'�<��_�������$�.�8���N5��'����B���!�"#���� /�6
� �` 6��� ������� 7M���� 3@���� � �Q�D��*������ ��
��a����� �.K� ,��
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI X
(FIGURE 5)
(FIGURE 6)
VARIABLE
90
HORIZONTAL
LEFT
HORIZONTAL
RIGHT
VERTICAL
Dampers of these type of diffusers in
receprocating way are used to adjust or
close air flow rate if necessary (figure 7).
To suit associate airvolume behind the
diffusers use plenum boxes and so ensure
uniform and continuous air distribution along
the diffusers (figure 8).
N5��'�(&-����I��D��4��� � �����$� .�8����� � ���
�� ��-�� ����^B�K�5.�D��*����������� �����-������O5�
��b�������.�5A������B�/��;#,���������
G�1������ �^�K� '�+5'� '�8 ������������/��;#,��c��?6
��d��������5A���c�e.��(���������#,�56�D��*����� �����
�� �%)-�K��� ������(I6������ �+,����^7e'���������
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI]
(FIGURE 7)
(FIGURE 8)
FRAME
DAMPERS
DEFLECTORS
The plenum boxes can be equipped with
thermal or accoustic insulations (figure 9).
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��f��������7.�O&e�
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI a
MATERIAL & FINISH
High quality 1.25mm. thickness extruded
aluminium profile in matt aluminium
anodized finish for blades and frame.Plenum boxes made of 0.7mm. thickness
galvanized iron.White polyester liquid or powder coating
finish is also available or any other specified
color with raul code up on requirement.
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��.������#�,
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K�5.�����-�'����jRI��G���/��7�������P���g.�� �����5;,
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��.������5&'
NO.OF
SLOTS1
300
50
300
85
300
125
300
160
350
195
400
230
400
265
400
300
H
W
2 3 4 5 6 7 8
123 148 198 198 248 298 298 298
OD
OD
OD
(FIGURE 9)
ALL DIMENSION IN mm.
50
H
W W
H+
50
W+50
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIb
ORDERING CODE
DIFFUSERS FIXING DETAILS
Shahrokhi linear slot diffusers & grilles with
following ordering code are specified.
A) The (figure 10) shows diffuser fixing
method over the pelnum box.B) The (figure 11) shows diffuser fixing
method over the duct or ceiling.
Y��;,���
� ������+4.�D�5kO-
����� �����������������������!�"#������ �����
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�� ������I.
23,����G�.�������������������+4.��3��1�����������Z
�� ������I.
SH : Shahrokhi manufacture
LIN : Linear grille
T : type : MO : Moved type without damper
MD : Moved type with damper
N x L : No. of slots (1 through 8) x length (inch)
�� ����.���� : SH
������� : LIN
����������!�"#�
��������!�"#�
:
:
MO
MD
: ����� $�. : T
� 2�������)'��d��'��� G�1��m����x : N x L
SH.LIN.T-N x L
(FIGURE 11)(FIGURE 10)
BRACKET
PLENUM
OR DUCT
SH.LIN.M
ENGINEERING PERFORMANCE DATA !�"#������ ������D�%,�"��G��-
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI d
AK(h)
cu.ft./ft
AK(v)
cu.ft./ft
NO.
OF
SLOTS
FLOW
RATE
c.f.m./ft
VK(h)
c.f.m.
VK(v)
c.f.m.
ST.PR.(v).
DROP
in.w.g.
ST.PR.(h).
DROP
in.w.g.
N.C.
THROW
ft
MIN MAX
0.018
0.037
0.056
0.075
0.045
0.090
0.135
0.180
1
2
3
4
5
6
7
8
10
20
30
40
222
222
222
222
556
541
536
533
0.001
0.001
0.001
0.001
0.002
0.002
0.002
0.002
20
40
60
80
444
444
444
444
1111
1081
1071
1067
0.053
0.053
0.053
0.053
0.088
0.088
0.088
0.088
30
60
90
120
667
667
667
667
1667
1622
1607
1600
0.105
0.105
0.105
0.105
0.175
0.175
0.175
0.175
12
16
20
24
8
10
14
16
4
7
7
8
17
24
29
33
30
32
33
34
20
22
24
26
<20
<20
<20
<20
8
12
14
16
12
19
24
27
40
80
120
160
889
889
889
889
2222
2162
2143
2133
0.204
0.204
0.204
0.204
0.340
0.340
0.340
0.340
14
19
24
26
20
28
35
38
36
38
40
42
0.001
0.001
0.001
0.001
0.002
0.002
0.002
0.002
0.053
0.053
0.053
0.053
0.088
0.088
0.088
0.088
0.105
0.105
0.105
0.105
0.175
0.175
0.175
0.175
0.204
0.204
0.204
0.204
0.340
0.340
0.340
0.340
50
60
70
80
222
222
222
222
538
541
534
533
100
120
140
160
444
444
444
444
1075
1081
1069
1067
150
180
210
240
667
667
667
667
1613
1622
1603
1600
25
29
31
33
18
20
22
24
9
11
11
12
34
40
42
45
35
36
37
38
27
28
29
30
<20
<20
<20
<20
18
20
22
23
30
33
36
38
200
240
280
320
889
889
889
889
2151
2162
2137
2133
29
33
36
36
41
47
51
54
43
44
45
46
0.093
0.111
0.131
0.150
0.225
0.270
0.315
0.360
Is discharge velocity measured at face of diffuser in f.p.m. at vertical
discharge.Is discharge velocity measured at face of diffuser in f.p.m. at horizontal
discharge.Is area factor in square feet per feet run at vertical discharge.Is area factor in square feet per feet run at horizontal discharge.Static pressure drop in inches water gage for vertical discharge. For return
pressure drop multiply the above values by 0.3 .Static pressure drop in inches water gage for horizontal discharge.Is based on terminal velocities 100 and 50 f.p.m. for horizontal discharge.Noise criteria for the horizontal discharge. for 4 ft active length with room effect
of 10 db. For vertical discharge substract 5 db. to the above NC values.
VK(v) :
VK(h) :
AK(v) :AK(h) :
ST.PR(v) :
ST.PR(h) :THROW :
NC :
LINEAR BAR REGISTERS
& GRILLES
APPLICATION
Shahrokhi linear bar registers & grilles are
designed to suit H.V.A.C. applications for
wall, ceiling and floor mounting.Linear shape of these type of grilles make a
pleasing aesthetic in architectural appea-
rance such as Amphitheatres, Sport halls,
Swimming pools and etc.These grilles are used for supply, return and
exhaust air.
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+4.��� ������ $�%����� &'�()�*����+,������&������
��.��/����0��1�2�����23,�<��������
���%�K����7)����&�K�,�7.����� ������$�.�8��������
YK����� 89�,�<� �'='��;�>���.������������e�������*�
�/�5C��������� �R#,�
/�� ;#,���5?R'���(IA���<(@����� �(&-�� ������8 ��
��.����
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIf
SH.LIN.F
(FIGURE 12)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI �l
BLADES
Five types of blades are used (figures 13-
20). Types of 00 & 01 models (figures 13 &
14) in one way and types of 02 & 15 & 30
models (figures 15-20) in one and two ways
are constructable.
� /� 6��� B�/�� ;#,����� ���Ll�� 9����F��� �����/� 6�$�.�[� 6
��.�5A��
D�� *������X�����F��� � �����l������ll���� G���$�� .�
�Ll��9���]��� � ����Fl����]���lL��� G������@�1�J�
���������(�,����B��@�1�������@�1�J���� D��*���
VARIABLE
90
90
90
+,����^3��o,�����K����D��*��������� �N5��'��� /�6
��-�������� ����8 ���<�.��#@�A���� B�N �������� ���%M�(&-
\���>����/��7 �(�������D��*��������� �����-�����.��>��
����7.���%M�N����I@�(@���
DESCRIPTION
These grilles constructed in maximum up to
5m. length and either can be connected
them in corners with any request angles by
using prepared pecies (figure 12).Adjustable blades with aerofoil section
which construct in multi parallel, allow a
smooth and uniform pressure drop air flow
patterns.
D�"5E�'���.��� ���#� ,�� #��]�G� 1�� '�� H���0�� ������8 ��
���� �� R9������K�� ����� [����������&.>����'���85��7
���L��������7.��4#���P���������#�,\56�D�)B�J7�
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI��
(FIGURE 15)
(FIGURE 14)
ALL DIMENSION IN mm.
LISTED SIZE - 12.5
12.5
12.5
33.0
33.0
46.5
46.5
(FIGURE 16)
ALL DIMENSION IN mm.
LISTED SIZE - 12.5
12.5 33.0
46.5
(FIGURE 13)
ALL DIMENSION IN mm.
ALL DIMENSION IN mm.
LISTED SIZE - 12.5
LISTED SIZE - 12.5
12.5 33.0
46.5
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI �L
(FIGURE 20)
12.5 33.0
46.5
(FIGURE 19)
ALL DIMENSION IN mm.
ALL DIMENSION IN mm.
LISTED SIZE - 12.5
LISTED SIZE - 12.5
12.5 33.0
46.5
30
(FIGURE 18)
ALL DIMENSION IN mm.
LISTED SIZE - 12.5
12.5 33.0
46.5
15
30
(FIGURE 17)
ALL DIMENSION IN mm.
LISTED SIZE - 12.5
12.5 33.0
46.5
15
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI�F
MATERIAL & FINISH
High quality 1.25mm. thickness extruded
aluminium profile for frames and different
thicknesses for blades in matt aluminium
anodized finish.White polyester liquid or powder coating
finish is also available or any other specified
color with raul code up on requirement.
g.���������hL]�(�� RE����� Z� B���2?#R���� ( ��RE����� /� 6
/���O����.>��\��������II��c�5�5��9>��5@��6�K���#75?5�
��.������5&'�+,����(5;5�����c�5�5��9>
\��6�Y���������&.��O 5�>�g.������������-��������8��
�#,��?6�K��/��;#,������J5'�#,���#�9������6����^����g.�
����-� '����jRI��G���/�� 7� ����� P���g.��� �����5;,
�����c�e.��K�5.
(FIGURE 21)
ORDERING CODE
Shahrokhi linear bar registers & grilles with
following ordering code are specified.
Y��;,���
�������� �����������������������(��n����� �����
��.�����jRI����K�Y��;,
SH : Shahrokhi manufacture
LIN : Linear bar register & grille
T : type : F00 : F01 : F02 :
F15 : F30 :
0 deg fixed type T bar fixed type Semi T bar fixed type
15 deg fixed type 30 deg fixed type
W x L x K : Width (inch) x length (inch) x blade deflection (1 or 2)
�� ����.���� : SH
������� : LIN
(��n����,�N5. (��n����, (��n��-����;*
(��n��-����, (��n��-���/�O.�6
: F02 : F01 : F00
: F30 : F15
: ����� $�. : T
p�M��m���� G�1��m���� � /�6�(&-��L������x x : W x L x K
SH.LIN.T- WxLx K
(A) (B) (C) (D)
33.0 mm.
46.5
mm
.
46.5
mm
.
45.0
mm
.
47.0
mm
.
27.0 mm. 43.0 mm. 32.0 mm.
FRAMES
Four types of frames are available up on
request (figure 21). Select the type of frame
is relative to installation of grilles locations.
� Z�Bq� #,����(,�� ������� ����L��� ����Z� B�$� .��� &S
��������
�������P#T��� ������+4.��"�����Z�B�$�.�Z�R#.�
SH.LIN.F00 SH.LIN.F01&F02
ENGINEERING PERFORMANCE DATA (��n����� ������D�%,�"��G��-
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI �X
12.5
40 130
155
200
60
70
90
400 419
388
417
400
368
391
0.009 0.010
0.008
0.010
0.009
0.007
0.009
60 180
225
280
85
105
130
600 581
563
583
567
553
565
0.021 0.020
0.018
0.020
0.019
0.018
0.019
80 230
295
360
110
140
170
800 742
738
750
733
737
739
0.036 0.031
0.031
0.032
0.031
0.031
0.031
<20 20
20
21
<20
<20
<20
<20 <20
<20
<20
<20
<20
<20
<20 <20
<20
<20
<20
<20
<20
16 26
28
30
19
23
25
26 41
43
46
29
36
38
20 32
34
39
21
27
30
14 27
28
31
16
19
21
8 16
18
20
10
11
14
13 21
22
26
13
17
19
100 280
365
440
135
175
210
1000 903
913
917
900
921
913
0.056 0.046
0.047
0.048
0.046
0.048
0.047
25 24
26
26
23
23
23
20 31
33
35
22
28
29
33 47
51
55
36
44
46
120 330
435
520
160
210
250
1200 1065
1088
1083
1067
1105
1087
0.080 0.064
0.067
0.066
0.064
0.069
0.066
28 29
30
30
27
28
28
24 36
40
42
26
34
35
39 57
64
66
41
51
56
140 380
505
600
185
245
290
1400 1226
1263
1250
1233
1289
1261
0.110 0.084
0.089
0.088
0.085
0.093
0.089
31 32
33
34
30
31
32
27 42
44
47
31
38
41
42 66
70
74
48
58
64
160 430
575
680
210
280
330
1600 1387
1438
1417
1400
1474
1435
0.146 0.108
0.117
0.113
0.110
0.123
0.116
34 35
37
38
33
35
36
30 46
49
51
33
41
44
45 69
75
78
50
62
67
180 480
645
760
235
315
370
1800 1548
1613
1583
1567
1658
1609
0.182 0.137
0.148
0.143
0.140
0.156
0.148
37 38
40
41
36
38
38
33 49
51
55
36
44
46
48 72
76
80
53
65
69
8"
[0.310]
10"
[0.400]
12"
[0.480]
3"
[0.100]
4"
[0.150]
5"
[0.190]
6"
[0.230]
width
AK
(sq.ft/ft)
width
AK
(sq.ft/ft)
FLOW
RATE
c.f.m./ft
FLOW
RATE
c.f.m./ft
VEL.
f.p.m.
VEL.
f.p.m.
N.C. N.C.
THROW
ft
THROW
ft
MIN MINMAX MAX
P
in.w.g.
TP
in.w.g.
T width
AK
(sq.ft/ft)
width
AK
(sq.ft/ft)
FLOW
RATE
c.f.m./ft
FLOW
RATE
c.f.m./ft
VEL.
f.p.m.
VEL.
f.p.m.
N.C. N.C.
THROW
ft
THROW
ft
MIN MINMAX MAX
P
in.w.g.
TP
in.w.g.
T
35
55
60
80
120
150
180
361
379
323
356
400
377
377
0.007
0.008
0.004
0.006
0.010
0.008
0.009
50
75
90
115
170
215
260
515
517
484
511
567
540
544
0.019
0.019
0.017
0.019
0.023
0.021
0.021
65
95
120
150
220
280
340
670
655
645
667
733
704
711
0.030
0.029
0.026
0.030
0.036
0.032
0.033
<20
20
<20
21
22
23
24
<20
<20
<20
<20
<20
20
20
<20
<20
<20
<20
<20
<20
<20
11
14
18
20
23
23
25
18
24
30
33
35
36
36
15
20
22
25
27
27
28
11
14
15
16
19
22
24
6
8
8
10
13
15
17
9
11
12
14
17
17
19
80
115
150
185
270
345
420
825
793
806
822
900
867
879
0.047
0.043
0.045
0.046
0.054
0.051
0.052
22
22
22
24
25
27
28
14
18
22
25
25
27
29
25
29
36
41
42
41
43
95
135
180
220
320
410
500
979
931
968
978
1067
1030
1046
0.062
0.057
0.061
0.062
0.072
0.068
0.070
25
25
27
27
29
31
32
18
21
27
28
29
31
33
29
33
42
45
47
46
48
110
155
210
255
370
475
580
1134
1069
1129
1133
1233
1193
1213
0.080
0.072
0.079
0.080
0.093
0.087
0.090
28
28
31
31
33
35
35
21
24
31
30
33
34
36
32
40
46
48
50
51
51
125
175
240
290
420
540
660
1289
1207
1290
1289
1400
1357
1381
0.102
0.089
0.102
0.102
0.120
0.113
0.117
32
31
34
35
36
38
39
23
26
35
34
35
38
40
35
42
50
53
53
55
56
140
195
270
325
470
605
740
1443
1345
1452
1444
1567
1520
1548
0.128
0.111
0.130
0.128
0.151
0.142
0.147
35
34
37
37
39
41
42
26
29
38
37
38
40
43
39
45
54
56
57
59
62
3"
[0.097]
4"
[0.145]
5"
[0.186]
6"
[0.225]
8"
[0.300]
10"
[0.398]
12"
[0.478]
12.5
Is discharge velocity measured at face of grille in f.p.m.Noise criteria for the supply grille without damper with room effect of 8db. and
8ft. active length:-Add 2db. to the above NC values in case of grille with damper.-Add 4db. to the above NC values for return grilles.- For other active length see NC correction factors table.
Is for 8ft active length supply grille without damper for 100 and 50 f.p.m.
terminal velocities. For other active lengths see throw correction factors table.Is area factor in square feet per feet run.Is in inches water gage for supply grille without damper.For grille with damper multiply the above values by 1.4.For return grille multiply the above values by 0.85.
T
VELOCITY :NC :
THROW :
AK :P :
ENGINEERING PERFORMANCE DATA (��n����� ������D�%,�"��G��-
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI�]
12.515
NC - Correction factors
THROW - Correction factors
1
-8
2Active length (ft)
Correction (db) -5
4
-3
6
-1
8
0
10
+2
12
+3
1
0.6
2Active length (ft)
Multiply by 0.7
4
0.8
6
0.9
8
1.0
10
1.2
12
1.4
12.5
30
width
AK
(sq.ft/ft)
width
AK
(sq.ft/ft)
FLOW
RATE
c.f.m./ft
FLOW
RATE
c.f.m./ft
VEL.
f.p.m.
VEL.
f.p.m.
N.C. N.C.
THROW
ft
THROW
ft
MIN MINMAX MAX
P
in.w.g.
TP
in.w.g.
T
40
55
75
80
130
160
190
421
393
417
364
433
410
404
0.010
0.009
0.010
0.007
0.011
0.010
0.009
55
80
105
120
180
225
270
579
571
583
545
600
577
574
0.020
0.019
0.020
0.017
0.021
0.019
0.019
70
105
135
160
230
290
350
737
750
750
727
767
744
745
0.031
0.032
0.032
0.030
0.033
0.032
0.032
<20
20
20
20
21
22
24
<20
<20
<20
<20
<20
<20
20
<20
<20
<20
<20
<20
<20
<20
14
17
22
24
26
27
30
22
27
35
37
39
41
43
18
20
25
26
31
33
35
13
15
19
19
23
26
28
8
9
11
12
16
17
19
12
12
16
16
20
21
23
85
130
165
200
280
355
430
895
929
917
909
933
910
915
0.046
0.049
0.048
0.047
0.049
0.047
0.048
22
24
23
24
26
26
27
17
21
26
29
29
31
35
28
35
40
45
47
47
54
100
155
195
240
330
420
510
1053
1107
1083
1091
1100
1077
1085
0.062
0.069
0.066
0.067
0.068
0.065
0.066
26
27
27
29
30
31
32
20
24
32
33
35
36
39
32
41
49
54
57
57
59
115
180
225
280
380
485
590
1211
1286
1250
1273
1267
1244
1255
0.082
0.093
0.088
0.091
0.090
0.087
0.088
28
31
31
33
33
34
36
23
29
36
38
39
41
44
36
46
54
59
62
64
65
130
205
255
320
430
550
670
1368
1464
1417
1455
1433
1410
1426
0.105
0.122
0.113
0.120
0.116
0.112
0.115
30
33
34
36
36
37
39
25
32
38
41
42
44
47
39
49
57
62
64
66
70
145
230
285
360
480
615
750
1526
1643
1583
1636
1600
1577
1596
0.133
0.154
0.143
0.152
0.146
0.142
0.145
34
38
38
40
40
40
42
28
36
41
43
45
47
50
42
52
61
65
67
69
75
3"
[0.095]
4"
[0.140]
5"
[0.180]
6"
[0.220]
8"
[0.300]
10"
[0.390]
12"
[0.470]
width
AK
(sq.ft/ft)
width
AK
(sq.ft/ft)
FLOW
RATE
c.f.m./ft
FLOW
RATE
c.f.m./ft
VEL.
f.p.m.
VEL.
f.p.m.
N.C. N.C.
THROW
ft
THROW
ft
MIN MINMAX MAX
P
in.w.g.
TP
in.w.g.
T
125
150
180
431
395
391
0.011
0.009
0.009
175
215
260
603
566
565
0.021
0.019
0.019
225
280
340
776
737
739
0.034
0.031
0.031
22
23
25
<20
20
20
<20
<20
<20
25
26
28
37
38
40
28
29
31
21
24
25
14
16
18
18
19
21
275
345
420
948
908
913
0.051
0.047
0.047
26
28
29
28
30
32
44
44
47
325
410
500
1121
1079
1087
0.071
0.065
0.066
30
32
34
33
34
36
51
51
53
375
475
580
1293
1250
1261
0.094
0.088
0.089
34
36
37
36
37
39
54
55
57
425
540
660
1466
1421
1435
0.122
0.114
0.116
37
38
40
39
40
43
58
59
62
475
605
740
1638
1592
1609
0.153
0.145
0.148
40
42
43
41
43
46
60
62
67
8"
[0.290]
10"
[0.380]
12"
[0.460]
35
55
65
85
389
423
382
405
0.008
0.010
0.008
0.009
50
75
95
120
556
577
559
571
0.018
0.019
0.018
0.019
65
95
125
155
722
731
735
738
0.030
0.030
0.031
0.031
<20
<20
<20
21
<20
<20
<20
<20
<20
<20
<20
<20
12
15
22
23
19
24
33
36
16
20
25
28
12
14
17
19
7
8
9
12
10
11
15
17
80
115
155
190
889
885
912
905
0.045
0.045
0.047
0.047
22
22
22
25
16
19
26
27
25
29
41
43
95
135
185
225
1056
1038
1088
1071
0.063
0.061
0.067
0.065
25
26
28
29
19
22
31
31
30
36
47
48
110
155
215
260
1222
1192
1265
1238
0.083
0.079
0.090
0.086
28
29
31
33
22
26
35
35
33
42
52
53
125
175
245
295
1389
1346
1441
1405
0.108
0.102
0.117
0.111
32
32
35
35
25
28
38
38
37
45
55
57
140
195
275
330
1556
1500
1618
1571
0.138
0.128
0.149
0.141
36
34
39
39
27
31
40
40
40
48
58
59
3"
[0.090]
4"
[0.130]
5"
[0.170]
6"
[0.210]
SH.LIN.F15 SH.LIN.F30
LINEAR BAR GRILLE DAMPERS
APPLICATION
Shahrokhi linear bar grille dampers are used
to adjust the air flow rate or close the grilles if
neccessery.The blades of these grille dampers are
constructed in two types of parallel or oppo-
site.The levers, which used for adjusting the
parallel blades are constructable in three
types of receprocating, switch and key.It is possible to contact these levers to an
electrical key or a remote control system
where high side wall or exposed ducts are
not available such as Amphitheatres,Cine-
ma, etc.Either can adjust the space optional
temperature by an electrical thermostat
which illustrates in control line.
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DESCRIPTION
In opposite type (figure 22) removal is by
spin a special screw.
In receprocating type (figure 23) the lever is
located in the middle of the damper which
removal is at horizontal way.
D�"5E�'J��������V,� '�(��0�G� 3#.���LL������d� �b�$� .���
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(FIGURE 22)
ALL DIMENSION IN mm.
(FIGURE 23)
ALL DIMENSION IN mm.
LEVER MOVE PATH
LISTED SIZE - 12.5
48.0
10.5
LISTED SIZE - 12.5
SPECIAL SCREW
ANGLE48.0
In switch type (figure 24) the lever is located
in the corner of the damper which removal is
at spin way.
In key type (figure 25) the lever is located
over the grille frame which removal is at
vertical way.
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(FIGURE 24)
ALL DIMENSION IN mm.
(FIGURE 25)
ALL DIMENSION IN mm.
LEVER ROTATION PATH
LEVER MOVE PATH
LISTED SIZE - 12.5
LISTED SIZE - 12.5
48.0
10.5
15
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ORDERING CODE
Shahrokhi linear bar grille dampers with
following ordering code are specified.
Y��;,���
� �K��Y�� ;,��������� ���(��n�� ��� ����������
��.�����jRI�
SH : Shahrokhi manufacture
GDL : Linear bar grille damper
T : type : RR : Handling control receprocating type
RH : Remote control receprocating type
SW : Switch type
KE : Key type
OP : Opposite type
W x L : Width (inch) x length (inch)
�� ����.���� : SH
(��n������������� : GDL
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: RH
: RR
: SW
: KE
: OP
: � ��� $�. : T
p�M��m���� G�1��m����x : W x L
SH.GDL.T-W x L
MATERIAL & FINISH
High quality 1.25mm. thickness extruded
aluminium profile in matt aluminium
anodized finish for key and opposite types.High quality 0.7mm. thickness aluminium
sheet finish for receprocating and switch
types.Either is possible to use 0.7mm. thickness
iron galvanized sheet for receprocating,
switch and opposite types.White polyester liquid or powder coating
finish is also available or any other specified
color with raul code up on request.
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GRILLES FIXING DETAILS
A) The (figure 26) shows grille fixing method
over the plenum box.
B) The (figure 27) shows grille fixing method
over the duct, ceiling or wall.
C) The (figure 28) shows another fixing
method with a use of special spring.
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(FIGURE 28)
(FIGURE 26)
(FIGURE 27)
BRACKETPLENUM
OR DUCT
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�# ����7M��� �u@
� g�5���6�<� �.�R��I#��<� �.�O��>
Residences (suburbia)
Residences (urban)
Music Auditoriums
Radio and Tv Broadcasting
Theatres
Assembly Hall
Mosques, churches
Libraries and Schools
Laboratories
Recreation Halls
Public Libraries, Museums
Banks, Post Offices
Restaurants Night Clubs
Cafeterias
Dept. Stores (upper floors)
Clothing Stores
Dept. Stores (main floors)
Supermarket, Retail stores
Sports Coliseums
Bowling Alley
Swimming pools
Factories, Supt. offices
Light Manufacturing
Heavy Manufacturing
Offices Conference Rooms
Offices Executive
Office Private
Office General
Office Computer
Hospital Rooms
Hospital Operating Rooms, Wards
Hospital Public Spaces
Apartment, Buildings, Hotel Rooms
Hotels, Ballrooms, Bank Halls
Hotel Public Spaces
Kitchens, Laundries, Garages
Recommended Noise Criteria
�� ����V,�#�
��*���O5�APPLICATIONAVERAGE(NC)
(NC)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIL�
L]
Fl
Fl
F]
Xl
Fl
F]
F]
Xl
]l
LL
LL
Lb
FL
L]
F]
Xl
Xl
F]
Xl
Xl
X]
Xl
Xl
X]
X]
F]
Xl
]l
X]
al
a]
F]
F]
Xl
X]
25
30
22
22
27
32
25
35
40
40
35
40
40
45
40
40
45
45
35
40
50
45
60
65
30
35
35
40
50
30
35
40
35
35
40
45
�� ��-������&�I56�(M�,Recommended delivery Velocities
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(m/s)
APPLICATION
Recommendeddelivery
Velocities(m/s)
Quantity Imperial Unit Metric UnitForm Imperial
To MetricMultiply By:
Form MetricTo ImperialMultiply By:
� 0������ %'�G�� -Conversion Table
�h]� �Lh]
Lh]� �Fh]
Lh]� �Xh]
Fh]� �]h]
Xh]� �a
]� ��l
1.5 - 2.5
2.5 - 3.5
2.5 - 4.5
3.5 - 5.5
4.5 - 6
5 - 10
\R6��� ����#,�
V%E�����*��� ����#,�
J�K����� 89�,�<D�T����� 89�,
q�����&,x����� �.�R��#�
�� 89�,��<�# ���� &B�'���<�.��T���� �.��<�&.�7'��6>
�-�T�����&.�#,��75��<�*�4��'�@��<�'='
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���7M���&�9�,��
� �.�/�&B�<�'�5�������&B�'��<� �� ��
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Y��@��'�@���
Broadcasting studios, Sound and
recording studios.
Concert halls, Auditoriums, Library,
Classrooms
Large offices, Restaurants, Hotels
Dining rooms, Public buildings
Corridors, Computer-rooms, Cafeterias
Department stores
Average factories, Workshops, Garages
Warehouses
Apartments, Residences, Hotel rooms
Theatres, Private offices, Hospitals, Mosques
square foot
square inch
square metre
square milimetre
0.0929
645.16
10.764
0.00155
(m )
(mm )
2
2
3
3
Area
Density
Length
Pressure
Temperature
Velocity
Volume
(flow)
inch
foot
foot
yard
milimetre
milimetre
metre
metre
25.4
304.8
0.3048
0.9144
0.0394
0.00328
3.2808
1.0938
(mm)
(mm)
(m)
(m)
inch of water column
foot of water column
inch of mercury column
ounces per square inch
pounds per square inch
Kilopascal
Kilopascal
Kilopascal
Kilopascal
Kilopascal
0.2486
2.9837
3.3741
0.4309
6.8948
4.0219
0.3252
0.2964
2.3206
0.145
(kPa)
(kPa)
(kPa)
(kPa)
(kPa)
fahrenheit celcius 5/9 ( F-32) (9/5 C)+32( C)
feet per second
feet per minute
miles per hour
metres per second
metres per second
metres per second
0.3048
0.00508
0.44704
3.2808
196.85
2.2369
(m/s)
(m/s)
(m/s)
cubic feet per minute
cubic feet per minute
cubic feet per hour
galons per minute
galons per minute
liters per second
cubic metres per second
milliliters per second
liters per second
liters per second
0.4719
0.0004719
7.8658
0.6309
0.7577
2.119
2119.0
0.127133
15.850
13.198
(L/s)
(m /s)
(ml/s)
(L/s)
(L/s)
(cfm)
(cfm)
(cfh)
(U.S.)
(imperial)
(fps)
(fpm)
(mph)
pounds per cubic foot kilograms per cubic metre 16.018 0.0624(kg/m )
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y�-���^3��o, (A )
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k
k
k kCFM=A x V
The area of grille utilized by the air stream at
the point of the outlet velocity, V (See
outlet velocity) as measured with an
appropriate meter.CFM=A x V
The point of measurement and type of
meter must be defined to accurately
determine CFM.
k
k
k k
Outlet Area (A ):
TERMINOLOGY
Aspect Ratio:
The ratio of width to height of the grille core.
Drop:
The vertical distance in feet between the
lower edge of a grille and the lower edge of
the air stream at the end of its throw.Drop is
affected by the lenght of throw, the velocity
and the temperature differential between the
supply and room air.
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v
The compressive pressure in inches of H O
that exists in the grille collar area at a given
air volume with or without specific
designated accessories.
2
sStatic Pressure (P ):
The pressure in inches of H O equated to a
velocity that exists for a given air volume in
the grille collar area.
V
2
Velocity Pressure (P ):
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A grille sound rating in pressure level at a
given condition of operation , based on
established criteria and a specific room
acoustic absorption value. Catalog NC
ratings are based on sound power level (LW)
minus an 18db room attenuation all octave
bands.
Noise Criteria (NC) : y���*���O5� (NC)
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The velocity in f.p.m. of the air stream at the
end of the throw (T) from the grille or a
designated point.
TTerminal Velocity (V ): y����&.�(M�, (V )
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T
The maximum total width in feet of the air
pattern at the point of terminal velocity.
Air Spread :
The distance in feet from a grille or
designated location to a point where the
motion of the air stream is reduced to a
given terminal velocity (V )T
Throw (T) :
The measured velocity at a stated point with
a specified meter. The rated outlet velocity is
typically an average of several prescribed
velocity measurements.CFM =A x V (see outletArea)
K
k k
Outlet Velocity (V ):
y�� �\R6
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y����'�6 (T)
+ T0�����3.�J ��K����?)���" ������� ����J���? *�@
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y��-���(M�, (V )
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k
CFM = A x V
y�����I@ (P )
�� � #M� ,��� I @�� J 5'�#,����I@�$�7e�(P ) (P )
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T
SVThe sum of the static pressure (P ) and the
velocity pressure (P ) that exists in the grille
collar for a given air volume.
T
S
V
Total Pressure (P ):
AHMAD SHAHROKHI was born in 1932 and began working in Sholeh Khavar Company in 1950. At that time, Iranian Industry was very young and most of the industrial parts and equipment were imported from foreign countries and Sholeh Khavar Company, active in the field of installation industry, was of no exception to this rule, thus it imported the air adjustable grilles required for its projects from USA supplied by T&B American Company.In 1951, a cargo ordered by Sholeh Khavar was sent by T&B Company for the said Company transported by vessel. this vessel broke down in a fire accident while in its way and therefore caused the Company to encunter problems in meeting its obligations. Thereupon, Ahmad Shahrokhi , assisted by financial support of the Company`s authorities, began sampling and manufacturing grilles from foreign models and was able to put into operation the production line of air adjustable grilles within a period of six months.Since then, being half a century, this Company has improved its quality and quantity day by and is proud to announce that on its 50 anniversary of its establishment, has proceeded in publishing the most comprehensive technical catalogue of its various products together with a CD of the computations.