Large Capacity ASME Code Filter Vessels

Large Capacity ASME Code Filters

Finite's filter vessels eliminate oil, water, and particulate contamination from large flows of compressed air and gas.

Finite Filter’s large capacity ASME filter vessels have been designed specifi cally for our coalescing elements and incorporate large sump capacities and generous exit cavities for maximum performance with low differential pressures.

All units are “U” stamped and conform to ASME Section VIII standard code for pressure vessels. With flow capacities to 37,000 SCFM and optional materials of construction, most compressor source filtration requirements can be met.

Standard Specifications

  • Porting to: 16″ Flange
  • Flows to: 37,000 SCFM (63,000 m3/hr)
  • Design: ASME Code/CRN (Canadian Registration)
  • Max. Temp: 450°F
  • Max. Pressure: 185 PSIG
  • Filter Media: Coalescing, Particulate, Vapor Adsorption, and Bulk Liquid Removal
  • Confi guration: Floor-Standing or Line-Mounted
  • Drain and Vent Ports: ½” NPT
  • Design allows for easy element changeout 

Typical Applications

Coalescing (Oil Removal)

  • Compressed air system protection
  • Dryer protection – Mist eliminator
  • Paint spray booths
  • Microelectronics quality air prefiltration
  • Landfill gas
  • Natural gas treatment

Interceptor (Particulate Removal)

  • Natural gas inlet systems
  • Desiccant dryer afterfilter
  • Prefi lter for coalescer
  • Systems with high particulate concentration
  • Particulate protection for non-lubricated systems 

Adsorber (Vapor Removal)

  • Odor removal
  • Food packaging
  • Powder paint systems
  • Blow molding
  • Breathing air 

Custom options include:

  • Stainless steel vessels (304 & 316 SS options)
  • High pressure
  • Corrosion allowance
  • Non-standard port orientation
  • Sight glass ports
  • Custom name plates
  • Liquid level control connections
  • P.E.D. Compliant 

Compressed Air Standards and Applications

ISO 8573-1 is an international standard that has become the universally accepted method for specifying and testing the purity of compressed air. ISO 8573-1 specifies a purity “class” based on contaminants in compressed air.

There are three classes that describe 1) particulate contamination concentration, 2) liquid or vaporous water contamination concentration, and 3) the contamination concentration caused by oil in the liquid, aerosol, and vapor states.

The ISO purity class is always stated using three numbers in a definite order: the solid particulate class, followed by the water contamination class, and finally the oil contamination class. Use the table below to see how the purity classes for each contaminant type are defined.

Notification as specified in ISO 8573-1

Class
Solid
Water
Oil
 
Maximum Particle Size
Maximum
Concentration
Maximum Pressure
Dew point
Maximum
Concentration
 
μm
ppm
(mg/m3)
oF
(oC)
ppm
(mg/m3)
1
0.1
0.08
(0.1)
-94
(-70)
0.008
(0.01)
2
1
0.8
(1)
-40
(-40)
0.08
(0.1)
3
5
4.2
(5)
-4
(-20)
0.83
(1)
4
15
6.7
(8)
37
(+3)
4.2
(5)
5
40
8.3
(10)
45
(+7)
21
(25)
6
–
–
–
50
(+10)
–
–

Typical Applications

Note: In the pictorial examples shown above, the contribution of hydrocarbon vapors has not been taken into account in determining the oil class category.