Data Sheet

Bulletin 71.2:92S
13
Table 6. Noise Level Data in Decibels with Schedule 40 Downstream Piping and No Insulation
(1)
(continued)
P
1
PERCENTAGE
OF MAXIMUM
REGULATOR
FLOW RATE
NOISE LEVEL, dBA
NPS 2 / DN 50 Main
Valve Body with
2-inch / 51 mm
Downstream Piping
NPS 2-1/2 / DN 65 Main
Valve Body with
4-inch / 102 mm
Downstream Piping
NPS 3 / DN 80 Main
Valve Body with
4-inch / 102 mm
Downstream Piping
NPS 4 / DN 100 Main
Valve Body with
8-inch / 203 mm
Downstream Piping
psig bar
Without
Attenuator
With
Attenuator
Without
Attenuator
With
Attenuator
Without
Attenuator
With
Attenuator
Without
Attenuator
With
Attenuator
250 17.2
0.2
100
30
84
73
81
71
78
71
76
68
84
75
80
72
90
83
88
80
0.3
100
30
90
80
85
77
84
73
80
69
90
77
84
73
95
85
90
82
0.4
100
30
93
82
88
78
88
77
81
73
92
81
86
77
98
88
93
85
0.5
100
30
95
85
91
80
90
79
84
75
94
85
88
79
100
91
95
87
0.6
100
30
98
88
92
82
93
82
87
77
94
86
91
80
102
92
96
88
0.7
100
30
101
89
94
83
96
85
91
81
100
92
95
83
104
95
99
91
1. Overall noise levels determined at a point 39-inches / 991 mm downstream of the regulator outlet and 39-inches / 991 mm from piping surface.
∆P
P
1abs
Construction
Refer to the Specications section on page 2. Review
the descriptions to the right of each specication,
and specify the desired choice wherever there is a
selection to be made. If not otherwise specied,
the pilot control spring is factory-set at the
approximate mid-range.
Be sure to specify the type of regulator desired
(standard pilot or pilot with optional tapped spring case).
Refer to separate bulletins for information on loading
regulators for use with pressure loaded pilots.
Ordering Information
When ordering, specify:
Application
• Range of temperatures
• Range of inlet pressures (maximum, normal, minimum)
• Outlet pressure setting
• Range of ow rates (maximum, normal,
minimum, controlled)
• Body size