Issue link: https://onenorgren.uberflip.com/i/1463811
252 ACC E S S O R I E S 8 For more information or for additional configurations, please contact us at NASInsideSales@imi-precision.com NFA-51 Series Silencers SILENCERS » Closed-end » 3 Thread sizes 1/4, 3/8, 1/2 » Replacement elements available » Safe – closed-end high flows won't cause potentially dangerous projectiles » Quiets large vacuum generators, valves, cylinders, air motors, and more » Durable – more area inside to absorb sound and debris » Economical – lasts longer, lower cost, replacement elements available » Reliable – no back pressure on high flow applications » Maintain clean environment – reduces maintenance costs, increases equipment life The NFA-51 Series silencers offer remarkable noise reduction for high volume exhaust applications without causing back pressure. These silencers are ideal for quieting large air valves that must exhaust quickly to maintain high cycle rates. Norgren uses the FNA-51 silencers on all high flow venturi vacuum generators where even a small amount of back pressure would decrease performance. NFA-51 Series Silencers Operating Specifications: Max. Operating Pressure: Not to exceed 150 PSI [10 bar] Noise level: Measured 4.5 on the diagonal from the silencer while attached to a Norgren generator. Noise levels will vary on Norgren and non-Norgren products. Note 1: Norgren strongly recommends the use of silencers on all vacuum generators. Note 2: Norgren silencers may be used on all types of pneumatic devices i.e. air-operated vacuum generators, air motors, valves, cylinders and more. How to Specify: » For Silencer only: Order by Model #. » Norgren generator/silencer combinations: Norgren recommends silencers that have been sized to ensure maximum generator performance. See specific generator for silencer options. » Non-Norgren pneumatic devices: The thread size (1/4, 3/8, 1/2) on the exhaust port of the pneumatic device determines the size of the silencer i.e. NFA-51-.250 » P/N: NRF-51 - Replacement Element: Fits all NFA-51 models » Equipment and applications may vary. Consult factory for proper silencer selection. A B C ØD Part Number Dimensions Weight oz (g) Construction Noise Level A* in. (mm) B in. (mm) C in. (mm) D in. (mm) Body Baffle Screen Element NFA-51-.250 1/4 NPS M 0.30 (7.6) 5.74 (145.8) 3.36 (85.3) 12.7 oz (357g) Steel Foam Steel Paper 72dB NFA-51-.375 3/8 NPS M 0.38 (9.6) NFA-51-.500 1/2 NPS M 0.38 (9.6) NRF-51 N/A N/A 4.76 (120.9) 3.03 (77.0) 6.2 oz (176g)