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Safety Screen Filters

187 Twis™ Etched Safety Screen Filter

This etched last chance filter features a seamless, one-piece screen element formed with pleats to greatly increase its contamination carrying capacity. This filter comes with an integral retention spring and is easily removable. The “TWIS” style of installation is readily twisted in or out of the bore for inspection or cleaning. Suited for unidirectional flow, this filter is offered with several standard hole size options ranging from 75 to 500 microns.

Key Product Facts
  • Mounting Configuration:Spring Retained
  • Lohm Rate:80 Lohms
  • Micron Rating:75 to 500 microns
  • Part Diameter:0.187 inches
  • Screenable Passageway Diameter:0.155 inches

Product Information

Materials
PART MATERIAL SPECIFICATION
Spring 17-7PH CRES AMS 5678
Threaded Post 303 CRES QQ-S-763C
Screen 304L CRES ASTM A 666
Base Washer 304L CRES QQ-S-763 or AMS 5647
Braze Silver Alloy AMS 4774
Finish: All CRES Parts Passivated
Flow Curve
Dimensional View
Installation Hole Details

Part Numbers & Specifications

This table below contains the part numbers and technical specifications for this product. If you have specific questions, need a quote, or would like to request a handbook or drawing, click the red request button in the column on the far right.

Part Numbers & Specifications
PART NUMBER LOHM RATE (nominal) MINIMUM BURST PRESSURE (psid) MINIMUM COLLAPSE PRESSURE (psid) ROB NUMBER NOMINAL SCREEN HOLE SIZE (in) NOMINAL SCREEN HOLE SIZE (μm) SCREEN OPEN AREA (in2) TOTAL SCREEN AREA (in2) NUMBER OF HOLES Request Information
FSSA1870030A 80 N/A 125 2.7 0.003 75 0.05 0.22 7050 Request
FSSA1870040B 80 N/A 125 5.4 0.004 100 0.06 0.22 5100 Request
FSSA1870060B 80 N/A 150 11 0.006 150 0.07 0.22 2250 Request
FSSA1870080B 80 N/A 150 21 0.008 200 0.06 0.22 1250 Request
FSSA1870100B 80 N/A 300 39 0.01 250 0.07 0.22 870 Request
FSSA1870150B 80 N/A 300 131 0.015 380 0.08 0.22 450 Request
FSSA1870200B 80 N/A 300 317 0.02 500 0.08 0.22 270 Request

Installation & Accessories

Replacement Parts & Accessories
Part Number Description
CUTA1870228C Extraction Tool Set
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From plugs to solenoid valves, there’s a vast array of products that The Lee Company can offer. If you’d like to discuss the best solution for your specific application or to learn more about our capabilities, use-cases, or quality standards, contact your local Lee sales engineer.