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Boretti Pneumatic Silencers
Superior overall performance
for
all Industrial Air Applications
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BORETTI Silencers used nationwide by
all industries
 BORETTI Silencers provide much less irritating
air exhaust than other silencers. By enhancing the quality of
the work environment, they directly improve your product quality
and, indirectly, customer satisfaction with your products.
This performance is obtained by reducing air
turbulence upstream of the silencer, within the silencer and leaving
the silencer. This action also reduces blockage from dirty
compressed air. BORETTI Silencers reclassify lubricating oil
mist into liquid and low exit air velocities prevent any
reatomization of the oil.
Machines equipped with BORETTI Silencers, using
very contaminated compressed air, have been documented with over 30
million cycles before cycle time was affected by blockage.
BORETTI Silencers -- a line of compact,
inexpensive models to quite noisy air-operated devices and prolong
the life of your air tools. Eight models -- 1/8" -
1" NPT. Maximum operating pressure 300 psig (20.7
bars). maximum operating temperature 160ºF (71ºC).
| Introducing the new
BORETTI "Peanut" Air Silencer |
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This new miniature unit provides all of
the features of the larger BORETTI Silencers in a compact
package weighing less than 1/2 oz. Final testing is
still underway and it is expected to have a flow factor CV of
approximately 1.0. Muffling performance is outstanding. |
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Air Silencer Performance Characteristics
| Test Results |
BORETTI |
Brand A |
Brand B |
| 1/4" |
3/8" |
1/2" |
1" |
1/4" |
3/8" |
1/2" |
1" |
1/4" |
3/8" |
1/2" |
1" |
| Loudness in Sones* |
68 |
134 |
164 |
156 |
200 |
230 |
206 |
384 |
255 |
235 |
305 |
727 |
| Decay Time in MSec. |
64 |
175 |
140 |
220 |
56 |
170 |
152 |
216 |
64 |
165 |
140 |
216 |
| Peak Impact Open Exh. in dB de-energized |
133 |
133 |
133 |
137 |
133 |
133 |
133 |
137 |
133 |
136 |
136 |
137 |
| Peak Impact with Silencer-dB de-energized |
93 |
99 |
99 |
101 |
103 |
103 |
103 |
111 |
106 |
108 |
108 |
122 |
| Average Band Level in dB |
76 |
|
|
|
79 |
|
|
|
88 |
|
|
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| Note: * Sones
indicated loudness level as perceived by the human ear.
100 sones sound twice as loud as 50 sones. They are
determined as follows: |
1. An octave band
analysis of the sound is made.
2. The loudness index of each band of
frequencies is found from a chart.
3. Multiply the sum of the indexes by .3 |
4. Multiply by .7
the index of the band with the highest loudness index.
5. Add 3 & 4 to obtain loudness in sones. |
Above
measurements determined under identical test conditions using
Brüel and Kjaer equipment. Mike located 3 feet from any
size air silencer. Line pressure: 90 psig. |
| OSHA
Permissible Noise Exposure** |
| Daily Exposure-hrs. |
8 |
6 |
4 |
3 |
2 |
1 1/2 |
1 |
1/2 |
1/4 |
| Noise Level-dBA |
90 |
92 |
95 |
97 |
100 |
102 |
105 |
110 |
115 |
**Refer to the Federal Register
Vol. 56-No 105
It is important to note that the above dB reading do not
differentiate between low and high frequency noises, the
latter being the most detrimental to the human ear. |
| |
| Pipe Size |
Model Number* |
Thread |
Flow Factor CV |
Diam. Inch |
Overall Length Inch |
Weight in Oz. |
| 1/8 |
1000-1 |
Male |
See above |
3/4 |
1 |
1/2 |
| 1/4 |
1000-2-F |
Female |
2.3 |
7/8 |
2 |
1 1/4 |
| 3/8 |
1000-3-F |
Female |
5.5 |
1 1/4 |
2 61/64 |
3 |
| 1/2 |
1000-34-F |
Female |
6.6 |
1 1/4 |
2 61/64 |
3 |
| 1/2 |
1000-4-F |
Female |
7.0 |
1 1/2 |
3 25/32 |
5 2/3 |
| 3/4 |
1000-46-F |
Female |
8.0 |
1 1/2 |
3 25/32 |
5 2/3 |
| 3/4 |
1000-86-F |
Female |
19.0 |
2 |
3 43/64 |
.715 |
| 1" |
1000-8-F |
Female |
19.8 |
2 |
4 43/64 |
.665 |
Octave Band Analyses and Peak Impact in dBA (with open exhaust
port)
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