© 2008 United Filtration Systems, Inc. 6558 Diplomat Drive, Sterling Heights, MI 48314
T: (586) 802-5561 F: (586) 802-5562
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 VACUUM PUMP EXHAUST FILTERS |
| At the heart of our Vacuum Pump Exhaust Filter is the completely disposable CS-type coalescing element. Made entirely from borosilicate glass microfiber and silica binder, it is compatible with all compressor lubricants and will operate at temperatures up to 400°F. Our CS coalescing filters have an efficiency rating of 99.99% at 0.01 micron and are designed to have an initial dry pressure drop of less than 2 psi. We recommend changing filter elements when the pressure drop reaches 10 psig or the pump manufacturers quoted maximum back pressure, whichever is lower. | |
 Model Number
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420-50CS
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425-50CS
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430-50CS
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433-50CS*
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443-50CS*
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437-50CS*
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447-50CS*
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456-50CS*
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Port Size (NPT) Maximum Temperature (°F) (2) Maximum Pressure (PSIG) Maximum Flow Rate SCFM |
1/2" 250 100 3 |
3/4" 250 100 9 |
1” 250 100 20 |
1 1/2" 250 100 45 |
2” 250 100 90 |
3” 250 100 100 |
3” 250 100 200 |
4” Flanged 250 100 450 |
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Principle Dimensions: Body Diameter (inches) Cap Diameter (inches) Overall Length (inches) Element Removal Clearance |
2.00 N/A 3.74 3.15 |
3.50 N/A 6.10 3.15 |
3.50 N/A 11.61 9.00 |
7.00 9.65 17.13 N/A |
7.00 9.65 29.13 N/A |
9.84 13.19 17.91 N/A |
9.84 13.19 29.92 N/A |
15.98 19.69 35.83 N/A |
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Element Code Number of Elements Required |
25-64-50CS 1 |
51-89-50CS 1 |
51-230-50CS 1 |
51-230-50CS 3 |
51-476-50CS 3 |
51-230-50CS 7 |
51-476-50CS 7 |
51-476-50CS 16 |
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Materials of Construction: (1) Body Element Retainers Tie Rods Seals Gauge Mesh Pad |
-- -- -- -- -- |
-- Buna-N -- |
-- Buna-N -- -- |
316 SS Buna-N Brass 304 SS |
316 SS Buna-N Brass 304 SS |
316 SS Buna-N Brass 304 SS |
316 SS Buna-N Brass 304 SS |
316 SS Buna-N Brass 304 SS |
Notes: (1) Material abbreviations:
(2) 400°F Maximum Temperature
Available With Viton O-Rings
(*) Models 433 and larger come complete with back pressure
gauge and anti-reintrainment mesh pad
Model Number
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420S-50CS
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425S-50CS
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430S-50CS
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433S-50CS*
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443S-50CS*
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437S-50CS*
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447S-50CS*
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456S-50CS*
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Port Size (NPT) Maximum Temperature (°F) Maximum Pressure (PSIG) Maximum Flow Rate SCFM |
1/2" 400 100 3 |
3/4" 400 100 9 |
1” 400 100 20 |
1 1/2" 400 100 45 |
2” 400 100 90 |
3” 400 100 100 |
3” 400 100 200 |
4” Flanged 400 100 450 |
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Principle Dimensions: Body Diameter (inches) Cap Diameter (inches) Overall Length (inches) Element Removal Clearance |
2.36 N/A 4.13 3.15 |
3.50 N/A 5.67 3.15 |
3.50 N/A 11.22 9.00 |
8.62 12.13 19.10 N/A |
8.62 12.13 28.54 N/A |
10.75 14.17 18.50 N/A |
10.75 14.17 31.10 N/A |
15.98 19.69 35.83 N/A |
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Element Code Number of Elements Required |
25-64-50CS 1 |
51-89-50CS 1 |
51-230-50CS 1 |
51-230-50CS 3 |
51-476-50CS 3 |
51-230-50CS 7 |
51-476-50CS 7 |
51-476-50CS 16 |
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Materials of Construction: (1) Body Element Retainers Tie Rods Seals Gauge Mesh Pad |
316 SS 316 SS -- Viton -- -- |
316 SS 316 SS -- Viton -- -- |
316 SS 316 SS -- Viton -- -- |
316 SS 316 SS 316 SS Viton 304 SS 304 SS |
316 SS 316 SS 316 SS Viton 304 SS 304 SS |
316 SS 316 SS 316 SS Viton 304 SS 304 SS |
316 SS 316 SS 316 SS Viton 304 SS 304 SS |
316 SS 316 SS 316 SS Viton 304 SS 304 SS |
Notes: (1) Material abbreviations: (*)
Models 433 and larger come complete with back pressure gauge and
anti-reintrainment mesh pad All Housings Come Complete with Coalescing
Elements. Maximum Flow Rate (SCFM) Line Size Connection Anodized Aluminum Housings Stainless Steel Housings 3 1/2” 420-50CS 420S-50CS 9 3/4” 425-50CS 425S-50CS 20 1” 430-50CS 430S-50CS 45 1 1/2” 433-50CS 433S-50CS 90 2” 443-50CS 443S-50CS 100 3” 437-50CS 437S-50CS 200 3” 447-50CS 447S-50CS 450 4” 456-50CS 456S-50CS
Sizing Chart
The size of the housing will depend on the maximum free air displacement of the pump. Never specify housing with a flow rating below that of the pump, or efficiency will be reduced. Standard connections are detailed in the tables above. Alternative connections are available on multi-element housings. For example Model 437 can be supplied with 3” NPT threads (standard) or various flange options are available.