Ross Controls SILENCERS User Manual

Ports: 1/8 to 2½

MUFFL-AIR® Silencers

Cv: 2.0 to 65

A

B

Male Threads

Construction: aluminum shell up to 1/2 size; steel and zinc shell

for 3/4 and 1 sizes; steel shell for 1¼ to 2½ sizes. Diffuser is
brass cloth.

Pressure Range: Up to 150 psig (10.3 bar).
Temperature: Up to 160°F (71°C).
Port Threads: NPT standard, BSPP.

A

B

Female Threads

ROSS MUFFL-AIR® silencers substantially reduce exhaust noise
levels in the workplace, yet produce little back pressure.

Typical impact noise reduction is in the 20–25 decibel range.

Port Average Model Dimensions inches (mm)
Size C

Number* Threads A B

v

1/8 2.0 5500A1003 Male 0.8 (21) 2.0 (51)
1/4 2.0 5500A2003 Male 0.8 (21) 2.0 (51)
3/8 2.0 5500A3013 Male 1.3 (33) 3.3 (83)

5.7 5500A3003 Male 1.3 (33) 3.3 (83)
1/2 7.0 5500A4003 Male 1.3 (33) 3.3 (83)
3/4 7.0 5500A5013 Male 1.3 (33) 3.3 (83)

15 5500A5003 Male 2.0 (51) 4.9 (124)
1 18 5500A6003 Male 2.0 (51) 4.9 (124)
1¼ 18 5500A7013 Male 2.5 (64) 5.9 (150)

37 5500A7001 Female 2.5 (64) 5.9 (150)
1½ 38 5500A8001 Female 2.5 (64) 5.9 (150)
2 50 5500B9001 Female 3.0 (77) 7.3 (185)
2½ 65 5500A9002 Female 4.0 (102) 6.9 (173)

*NPT threads. For BSPP threads, add the letter “D” in front of the model
number., e.g., D5500A1003.

Gauges

Pressure Gauges: Center back mounting; male pipe threads.

Port Model Pressure Range Case Diameter

7

8

6

5

80

4

60

3

40

2

20

0

1

0

100

lb/in

9

10

120

fi

140

11

160

12

180

13

200

2

14

bar

78 © 2012, ROSS CONTROLS.

Size Numbers psig (bar) inches (mm)
1/8 5400A1002 0-160 (0-11) 1.5 (38)
1/4 5400A2010 0-60 (0-11) 2.0 (51)

1/4 5400A2011 0-200 (0-14) 2.0 (51)
1/4 5400A2012 0-300 (0-20) 2.0 (51)
1/4 5400A2014* 0-160 (0-11) 2.5 (64)
1/4 5400A2015** 0-160 (0-11) 2.0 (51)

* 5400A2014 - Stainless steel case liquid filled.
** 5400A2015 - Green shade between 40-70 psi (2.7-4.8 bar).

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