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184 Air System Equipment Air Fia< THE GEORGE EVANS CORPORATION MOLINE, ILLINOIS Evans Lifelong Air and Grease Filters All Aluminum . . . Every Part Precision Made FILTER PACK HOLDS MORE GRAMS OF DIRT PER CUBIC INCH. SEAL TIGHT HOLDING FRAME WITH PVC GASKET GIVES PERMANENT DUST TIGHT SEAL. Air System Equipment Mine Safety Appliances Company 201 North Braddock Avenue, Pittsburgh 8, Pennsylvania 185 MSA: Fluid Purification Equipment / Fluid Purification Specialists for 45 years Above photo ohowo ectloo of precUw sumped (rid. Strands and grids are scientifically sited and placed for holding maximum dirt load. Filter pack has larger grid openings on air inlet side progressing to smaller grid openings oa air outlet side. Prevents face loading and choke-off of air stream. Ac complishes uniform depth loading all through the pack. Every grid, every strand does its part. TURBULENCE AIR CLEANING ACTION. Dirt is slammed into the fiat strands of mesh where it is caught and held by talon like edges of these grids. Precision stamped openings force air to travel many times'filter depth from inlet to outlet side .. . for high efficiency sir cleaning. LOWER AND SLOWER STATIC PRESSURE RISE PER GRAM OF DIRT LOAD. Filter pack catches and holds dirt without strangling air stream. Filter remains in service longer: (1} without sharp increase in resistance (2) with fewer cleanings (3) with power costs held down. HIGH VELOCITY APPLICATION ... UP TO 1,000 FPM. Using turbulence air cleaning action (instead of screening or straining action) makes Evans filters particularly well suited to extremely .high velocity requirements. The higher-the velocity . .. the harder dirt is slammed into the mesh where it is caught and held by the talon like edges of the strands. Filter's efficiency rises as velocities rise. DOUBLE ACTION ADHESIVE. Works as adhesive while filter is in service. Becomes a deter gent and helps wash filter when water is flooded on. IMPORTANT . .. When Evans filter Quid is used filters can be washed with tap water. FILTER CAPACITY CHART--CFM DELIVERY (Velocity) . Pressure Loss fpffl H20 SB .044' 390 .oeo* <76 .0*4' .113* .180* 736 .nv .262* 866 .325* 10 X 20 315 360 406 <50 <95 640 &SS <30 67$ 721 765 810 856 901 cfm Delivery Standard Size Filters 16 X 20 X 20 X 20 X 20 20 25 ' 30 648 700 894 1085 800 1021 1239 706 900 1151 1396 784 1000 1T77 1550 SO 1100 1404 1704 1200 1531 1858 1800 1661 1097 1400 1788 2170 1175 1500 ms 2323 1254 1600 2044 2481 U32 1700 m MU 1800 1490 1900 2423 2946 1567 2000 2555 3100 25 X 30 1383 1578 1778 1975 2171 23S7 2S67 2763 2959 3160 3358 3552 3753 3949 Gasket pressure locks filter into frame. No springs, latches or locking attachments. Slide filter into frame. Gasket auto matically grips it securely. Gasket is permanent (Polyvinyl Chloride). Stands up for years against compressive stresses without breaking down. Un affected by oil or moisture. HOW TO SPECIFY EVANS SEAL-TIGHT FRAMES. Filter holding frames shall be heavy gage steel. Polyvinyl chloride gasketed on frontof air inlet side. Gasket shall provide both positive grip for holding filter in frame and positive seal between filter and holding frame. Frames shall be double coat finished in black enamel. Frames shall bolt together. HOW TO SPECIFY EVANS LIFELONG AIR FILTERS. Filters shall be aluminum. Frame holding media shall be onepiece precision die-pressed heavy gage aluminum with edges rounded. Comers machine fitted. Frame shall have drain holes in 3 corners of frame member. Filter pack shall be made of die-cut flat and corrugated aluminum grids packed with larger openings on inlet side progressing to smaller .openings on outlet side. M-S-A UltraAire* Space Filter Lightweight, fire-resistant, unusually strong, and ideal for high humidity service. Individually pre tested and proved at least 99.97% efficient in removing particles of 0.3 micron diameter. M-S-A Dustfoe* Space Filter Offers the efficiency of an Electrostatic Precipitator without the high cost and without the possibility of arcing "blow-off." 85-95% certified efficiency on NBS Atmospheric Air Dust Stain Rating. M-S-A Cylindrical-Type UltraAire* Space Filter Honeycomb-type fold without separators is admir ably suited to cylindrical element construction. Thin shape is preferred for pressure systems and round ducts. Easy to handle. Inexpensive to ship. M-S-A Air-O-Kay* PreFilter Impingement type panel prefilter which can be used oiled or dry to remove lint and other large airborne particles from the atmosphere. 60-70% certified effi ciency on NBS Stain Rating. -Trademark Write for illustrated technical bulletins on M-S-A Space Filters related to your particular system problem. Ask an MSA Representative for system recommendations. Mine Safety Appliances Com pany, Pittsburgh 8, Pa., Phone: CHurchill 1-5900. Other Fluid Purification Equipment includes cata lytic filters for jet aircraft cabin air; air separation plants; inert gas generators; space capsules; bomb shelters; air line filters; jet fuel and hydraulic fluid purification.