Ross Controls SILENCER RECLASSIFIER User Manual
Ports: 1/2 to 1
1/2 Model
SILENCERS/RECLASSIFIERS
Silencer/reclassifiers are integral silencer and oil separation devices.
When installed at the exhaust ports of pneumatic valves they reduce exhaust
noise and capture lubricants contained in the exhausting air.
A
C
B
They are used on valve-cylinder applications and on air tools with piped e xhausts.
FEATURES:
• Exhaust noise is reduced to 80 to 85 dBA under standard steady-state test
conditions
• Peak impact noise is reduced to 106 to 108 dBA
• Both a drain cock and a 1/8 tube tting are supplied for the manual or automatic
draining of accumulated liquids
Port Size Model Numbers
1/2 5055B4009
3/4 5055B5009
1 5055B6009
A
C
3/4 & 1 Model
STANDARD SPECIFICATIONS (for products on this page):
Ambient/Media Temperature: 40° to 125°F (4° to 51°C).
Bowl: Polycarbonate plastic.
Element: Sintered bronze.
Fluid Media: Compressed air.
B
Port Model DIMENSIONS inches (mm) Weight
Size Number A B C Depth lb (kg)
1/2 5055B4009 3.5 (89) 5.5 (140) 0.7 (18) 3.5 (89) 1.3 (0.59)
3/4 5055B5009 4.2 (107) 8.4 (213) 2.7 (69) 4.2 107) 2.8 (1.27)
1 5055B6009 4.2 (107) 8.4 (213) 2.7 (69) 4.2 (107) 2.8 (1.27)
REPLACEMENT FILTER ELEMENT KITS & BOWLS
Port Size Element Rating/Type Kit Number
1/2 20-µm - Standard 940K77
3/4 - 1 100-µm - Standard
Port Size
1/2 Polycarbonate 982K77
3/4 - 1 Polycarbonate 983K77
Inlet Pressure:
For automatic drain model: 5 to 150 psig (0.3 to 10.3 bar).
For manual drain model: 0 to 150 psig (0 to 10.3 bar).
Threads: NPT standard, BSPP. For BSPP threads, add a “C”
prefix to the model number, e.g., C5055B4009.
Bowl T ype Kit Number
981K77
IMPORTANT NOTE: Please read carefully and thoroughly all of the CAUTIONS on the inside back cover.
www.rosscontrols.com 29
0 10
0
20 30 40 50
0 10
0
20 30 40 50
Valve
Ports: 1/2 to 1
0 10
0
120
20
30 40 50
at flows over 70 scfm (33.0 l/s).
SILENCERS/RECLASSIFIERS
Typical Installation In A
Valve-Cylinder Circuit
bar
0.70
0.56
0.42
psi
10
8
6
Air Supply
Air Cylinder
FLOW CHART
Back Pressure Performance
1/2
Exhaust
Pneumatic
Valve
1/8” Drain Line
3/4 & 1
Constant-flow tests were conducted in a 14’ x 22’ room with a 14’ ceiling. Sound pressure levels
were recorded using a B & K precision impulse sound meter (model 22045), a 1-inch microphone
(DB0375), a flexible extension rod (UA0196), and a random incidence corrector (UA0055).
Test system as mounted on the 14-foot wall with exhaust port 4 feet from the 14-foot wall.
dBa
120
11 0
1/2” Open Port
(36” distance)
100
90
80
IN SLOW RESPONS E
SOUND PRESSURE LEVEL
70
scfm
02 0
FLO W
0
l/ s
0.28
0.14
0
0
scfm
scfm
FLOW
FLOW
1/2 Model Sound Attenuation
5055B4009
(36” distance)
40 60 80 100 120
4
2
BACK PRESSURE
0
0
02 0
0
l/ s
l/ s
On 1/2 models effluent
re-entrainment may occur
40 60 80 100
SOUND ATTENUATION DATA
dBa
120
11 0
100
90
80
IN SLOW RESPONS E
SOUND PRESSURE LEVEL
70
scfm
02 0
FLO W
0
l/ s
1 Inch Model Sound Attenuation
3 ft from exhaust 10 ft from exhaust
1” x 14” Open Pipe
5055B6009
40 60 80 100 120
30 © 2012, ROSS CONTROLS.
All Rights Reserved.
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