Section

Engineering Reference

Practical charts, technical documents, and selection references for filtration engineers, maintenance teams, and buyers. Check source conditions before applying the data.

Editorial · Engineering Reference

ANSI / ASME Flange Chart: Class 150 Dimensions

Class 150 flange dimensions for common pipe sizes, with a drilling-pattern diagram and links to Texas Flange charts.

NPS 4 Class 150 drilling pattern: 9 inch outside diameter, 7.5 inch bolt circle, eight 0.75 inch holes.
Original drilling-pattern diagram using Texas Flange reference dimensions; bore and facing omitted.

Editorial · Engineering Reference

Pressure Drop and Filter Area

Know which flow curves, fluid properties, and differential-pressure limits to request for filter selection.

Conceptual cutaway of a bag filter housing with upstream and downstream pressure gauges.
AI-generated conceptual illustration; not to scale.

Editorial · Engineering Reference

Bag Filter Housing Documents: What to Compare

Compare housing documentation with a practical checklist of ratings, materials, dimensions, and service requirements.

Bag filter housing beside engineering drawings, a checklist, and measuring tools.
AI-generated conceptual illustration; not to scale.

Editorial · Engineering Reference

Micron Ratings: Ask for the Efficiency

A beta-ratio reference table explains why particle size alone does not describe filter performance.

Conceptual illustration of differently sized particles passing through fibrous filter media.
AI-generated conceptual illustration; not to scale.

Editorial · Engineering Reference

O-Ring Selection: Material and Dimensions

Use Parker’s material and sizing tools alongside your housing manufacturer’s seal specification.

Exploded O-ring and groove illustration beside a caliper.
AI-generated conceptual illustration; not to scale.

Editorial · Engineering Reference

Chemical Compatibility: Start with the Seal

Find seal compatibility references and the service conditions needed before selecting a compound.

Conceptual ink illustration of an elastomer seal between machined flange faces.
AI-generated conceptual illustration; not to scale.