Bottom Ring: Temperature Range -20°C to 200°C, Height 25-50 mm

Component Specifications

Definition

The bottom ring is a circular metal component positioned at the base of a filter bag cage in industrial filtration systems. It serves as the foundation that supports the vertical cage structure, ensures proper alignment of filter bags, and creates a sealed interface with the filter housing or support grid. This component maintains structural integrity during pressure differentials and prevents bypass of unfiltered media.

Working Principle

The bottom ring functions as a load-bearing base that distributes mechanical stress evenly across the filter bag cage structure. During operation, it maintains dimensional stability under varying pressure conditions (typically 0-150 psi), prevents lateral movement of filter bags, and ensures a tight seal against the filter housing through precision machining and gasket interfaces. Its circular design minimizes stress concentrations and allows for uniform media flow distribution.

Materials

Carbon steel (ASTM A36), 304/316 stainless steel, or powder-coated mild steel; thickness: 3-6 mm; surface finish: Ra 3.2 μm or better; corrosion resistance per ASTM A967.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Height	25-50 mm
Weight	0.5-8 kg
Diameter	150-600 mm
Pressure Rating	0-150 psi
Temperature Range	-20°C to 200°C
Flatness Tolerance	±0.5 mm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

DIN 2458, ASME B46.1

Parent Products

This component is used in the following industrial products

Filter Bag Cage

A structural support frame that holds filter bags in place within a bag filter house, maintaining their shape and preventing collapse during operation.

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Engineering Analysis

Risks & Mitigation

Corrosion in aggressive media
Deformation under overpressure
Seal failure causing bypass
Improper installation leading to leaks

FMEA Triads

Trigger: Material corrosion from chemical exposure
Failure: Structural weakening and potential collapse
Mitigation: Use corrosion-resistant alloys and protective coatings

Trigger: Exceeding pressure rating
Failure: Plastic deformation and loss of sealing
Mitigation: Implement pressure relief valves and regular inspection

Trigger: Improper installation alignment
Failure: Media bypass and reduced filtration efficiency
Mitigation: Use alignment guides and torque-controlled installation

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5 mm diameter, ±0.2 mm thickness, ±0.3° angularity

Test Method

Dimensional verification per ISO 2768, pressure testing per ASME Section VIII, material certification per ASTM standards

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Bottom Ring

Manufacturer profiles associated with Bottom Ring.

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Frequently Asked Questions

What is the primary function of a bottom ring in filter bag cages?

The bottom ring provides structural support, ensures proper sealing at the base, and maintains alignment of filter bags during operation.

Can bottom rings be customized for different filter sizes?

Yes, bottom rings are typically manufactured to match specific cage diameters and can be customized for material, thickness, and connection types.

How often should bottom rings be inspected?

Inspect during every filter bag change (typically every 3-12 months) for corrosion, deformation, or seal damage.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Bottom Ring