N0 pages

SPIRAL
N
Fire Protection
DESIGN FEATURES
• Simplicity of design
• One-piece/no internal parts
• Clog-resistant
• Three standard pipe sizes—1/2”, 1”
and 1-1/2”
• Male connection
• Factory Mutual, U.S. Coast Guard, and
Lloyd's Register approved models
SPRAY CHARACTERISTICS
• Two spray cones: an outer, wide angle
cone and a narrower inner cone
combine to give full cone effect
Spray pattern: Full Cone
Spray angles: 90° and 120° standard
Flow rates: 3.0 to 534 gpm
Full Cone 90°
Nozzle with optional
protective cover
Full Cone 120° (W)
Dimensions are approximate. Check with BETE for critical dimension applications.
N Flow Rates and Dimensions
Full Cone, Medium 90° and Wide 120° (W) Spray Angles, 1/2" to 1 1/2" Pipe Sizes
Male
Pipe
Size
GALLONS PER MINUTE @ PSI
Nozzle
K
Number Factor
10
PSI
20
PSI
30
PSI
40
PSI
60
PSI
80
PSI
100
PSI
200
PSI
400
PSI
Approx. (in.)
Free
Orifice Pass.
Dia.
Dia.
TO ORDER: specify pipe size, connection type, nozzle
number, spray angle, and material.
N1
26
5.20
6.00
7.35
8.49
9.49
13.4
19.0
0.19
0.13
7.50
9.18
10.6
13.0
15.0
16.8
23.7
33.5
0.25
0.13
N3
2.61
8.25
11.7
14.3
16.5
20.2
23.3
26.1
36.9
52.2
0.31
0.13
3.81
12.1
17.0
20.9
24.1
29.5
34.1
38.1
53.9
76.2
0.38
0.19
5.22
16.5
23.3
28.6
33.0
40.4
46.7
52.2
73.8
104
0.43
0.19
N6
6.64
21.0
29.7
36.4
42.0
51.4
59.4
66.4
93.9
133
0.50
0.19
N6
6.64
21.0
29.7
36.4
42.0
51.4
59.4
66.4
93.9
133
0.50
0.19
N7
10.6
33.5
47.4
58.0
67.0
82.1
94.8
106
150
212
0.63
0.25
N8
15.0
47.5
67.2
82.3
95.0
116
134
150
212
300
0.75
0.25
N9
20.4
64.5
91.2
112
129
158
182
204
288
408
0.88
0.31
N10
1 1/2
4.24
5.30
N5
1
3.00
1.68
N4
1/2
0.949
N2
26.7
84.5
120
146
169
207
239
267
378
534
1.00
Approximate
Dimensions Wt.
(inches)
(oz.)
A
B Metal
0.31
2.50
0.88
3.00
3.63
1.38
8.50
4.38
2.00
27.0
Flow Rate (GPM) = K √⎯⎯
⎯ PSI
⎯
Standard Materials: Brass and 316 Stainless Steel.
All N series covers are
Spray angle performance varies with pressure. Contact BETE for specific data on critical applications.
www.BETE.com
.