Asme, Capacity, Materials – Watts 740 User Manual
Page 2: Pressure – temperature, Standards, Dimensions – weights
SERIES 174A
Set
3
⁄
4
" x
3
⁄
4
"
1" x 1"
1
1
⁄
4
" x 1
1
⁄
4
" 1
1
⁄
2
" x 1
1
⁄
2
"
2" x 2"
Pressure
20 x 20mm
25 x 25mm
32 x 32mm
40 x 40mm
50 x 50mm
psi
bar
Model M3
Model M1
Model M1
Model M
Model M
30 2.07
650,000
1,005,000
1,682,000
2,020,000
3,815,000
33 2.27
695,000
1,075,000
1,788,000
2,150,000
4,080,000
35 2.41
725,000
1,125,000
1,877,000
2,250,000
4,250,000
36 2.48
740,000
1,145,000
1,916,000
2,310,000
4,344,000
40 2.76
800,000
1,240,000
2,071,000
2,490,000
4,690,000
45 3.10
875,000
1,355,000
2,265,000
2,720,000
5,130,000
50 3.45
950,000
1,470,000
2,459,000
2,950,000
5,575,000
55 3.79
1,025,000
1,590,000
2,653,000
3,190,000
6,010,000
60 4.13
1,100,000
1,702,000
2,847,000
3,425,000
6,450,000
65 4.58
1,170,000
1,820,000
3,041,000
3,660,000
6,890,000
70 4.82
1,245,000
1,935,000
3,325,000
3,890,000
7,330,000
75 5.17
1,320,000
2,055,000
3,429,000
4,125,000
7,770,000
80 5.51
1,400,000
2,166,000
3,605,000
4,360,000
8,215,000
85 5.86
1,470,000
2,285,000
3,817,000
4,590,000
8,650,000
90 6.60
1,545,000
2,400,000
4,011,000
4,825,000
9,090,000
95 6.55
1,620,000
2,520,000
4,205,000
5,060,000
9,530,000
100 6.89
1,695,000
2,635,000
4,399,000
5,290,000
9,970,000
105 7.23
1,770,000
2,750,000
4,593,000
5,525,000
10,410,000
110 7.58
1,845,000
2,865,000
4,787,000
5,760,000
10,850,000
115 7.92
1,920,000
2,980,000
4,981,000
5,990,000
11,290,000
120 8.27
1,995,000
3,100,000
5,175,000
6,225,000
11,730,000
125 8.61
2,070,000
3,215,000
5,370,000
6,460,000
12,170,000
130 8.96
2,145,000
3,330,000
5,564,000
6,690,000
12,610,000
135 9.30
2,220,000
3,445,000
5,758,000
6,925,000
13,050,000
140 9.65
2,295,000
3,565,000
5,952,000
7,160,000
13,490,000
145 9.99
2,370,000
3,680,000
6,146,000
7,390,000
13,390,000
150 10.34
2,445,000
3,795,000
6,340,000
7,630,000
14,370,000
Capacity*
BTU/hr Steam Pressure Discharge Capacities
As tested and rated by the National Board of Boiler and
Pressure Vessel Inspectors
Materials
Series 174A
• Bronze body construction
• Nonmetallic disc-to-metal seating
Series 740
• Iron body construction
• Nonmetallic disc-to-metal seating
Pressure – Temperature
Series 174A
Pressure range: 30psi to 150psi (2 to 10 bar) with correspon-
ding high BTU/hr ratings from 650,000 to 14,370,000 BTU/hr.
Maximum Temperature: 250ºF (121ºC)
Series. 374A
Pressure range: rated up to 550,000 BTU/hr at a 30psi (2 bar)
setting only.
Series 740
Pressure range: 30psi to 75psi (2 to 5 bar) with corresponding
high ratings from 925,000 to 10,700,000 BTU/hr.
Maximum Temperature: 250ºF (121ºC)
Standards
Tested and rated by the National Board of Boiler and Pressure
Vessel Inspectors to the requirements of ASME. Meets Military
Spec. MIL-V-18634B, Type I, Class 3A, Style A (Bronze Body),
Style B (Iron Body).
ASME
Dimensions – Weights
SERIES 174A
Size (Dn)
Height
Length
Weight
Model
in.
mm
Model
in.
mm
in
mm
lbs.
kg.
374A
3
⁄
4
x
3
⁄
4
20 x 20
–
3
5
⁄
8
92
2
1
⁄
2
64
1.13
.5
174A
3
⁄
4
x
3
⁄
4
20 x 20
M3
5
1
⁄
8
130
2
1
⁄
2
64
1.50
.7
174A
1 x 1
25 x 25
M1
5
3
⁄
4
146
3
76
3.13
1.4
174A
1
1
⁄
4
x 1
1
⁄
4
32 x 32
M1
8
3
⁄
8
213
4
3
⁄
4
121
6.25
2.8
174A
1
1
⁄
2
x 1
1
⁄
2
40 x 40
M
9
229
4
7
⁄
8
124
7.25
3.3
174A
2 x 2
50 x 50
M
11
5
⁄
8
295
6
1
⁄
4
159
13.75
6.2
SERIES 740
Set
3
⁄
4
" x 1"
1" x 1
1
⁄
4
"
1
1
⁄
4
" x 1
1
⁄
2
" 1
1
⁄
2
" x 2"
2" x 2
1
⁄
2
"
Pressure
20 x 20mm
25 x 25mm
32 x 32mm
40 x 40mm
50 x 50mm
psi
bar
Model M1
Model M
Model M
Model M
Model M
30 2.07
925,000
1,300,000
2,105,000
2,900,000
5,250,000
33 2.27
989,000
1,390,000
2,250,000
3,100,000
5,613,000
35 2.41
1,032,000
1,450,000
2,345,000
3,235,000
5,855,000
36 2.48
1,053,000
1,480,000
2,395,000
3,300,000
5,975,000
40 2.76
1,139,000
1,600,000
2,590,000
3,569,000
6,461,000
45 3.10
1,245,000
1,750,000
2,830,000
3,903,000
7,067,000
50 3.45
1,352,000
1,899,000
3,075,000
4,237,000
7,672,000
55 3.79
1,459,000
2,049,000
3,315,000
4,572,000
8,277,000
60 4.13
1,566,000
2,200,000
3,560,000
4,907,000
8,883,000
65 4.58
1,672,000
2,349,000
3,800,000
5,241,000
9,488,000
70 4.82
1,779,000
2,499,000
4,045,000
5,575,000
10,093,000
75 5.17
1,886,000
2,649,000
4,285,000
5,909,000
10,700,000
SERIES 740
740
3
⁄
4
x 1
20 x 25
M1
5
5
⁄
8
143
3
76
1.88
9
740
1 x 1
1
⁄
4
25 x 32
M
7
1
⁄
4
184
3
1
⁄
2
89
3.13
1.4
740
1
1
⁄
4
x 1
1
⁄
2
32 x 40
M
8
3
⁄
4
222
4
5
⁄
8
117
6.13
2.8
740
1
1
⁄
2
x 2
40 x 50
M
9
1
⁄
4
235
5
1
⁄
4
133
7.50
3.4
740
2 x 2
1
⁄
2
50 x 65
M
11
5
⁄
8
295
6
3
⁄
4
171
16.50
7.5
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Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
W a t e r S a f e t y & F l o w C o n t r o l P r o d u c t s
ES-174A-740 0610
© Watts Regulator Company, 2006