Pump Casing/Housing: Temperature Range -20°C to 200°C

Component Specifications

Definition

The pump casing, also known as pump housing, is the primary pressure-containing component in feed pumps that encloses the impeller, volute, and internal flow passages. It serves to convert kinetic energy into pressure energy, maintain structural integrity under operational stresses, and provide mounting interfaces for other pump components. In industrial feed pump applications, casings are engineered to withstand corrosive fluids, high pressures, and thermal cycling while maintaining precise dimensional stability.

Working Principle

The pump casing operates on fluid dynamics principles where the housing's volute or diffuser section gradually expands to convert high-velocity fluid from the impeller into pressure energy. The casing maintains a continuous flow path from suction to discharge while containing internal pressure and supporting hydrodynamic efficiency through optimized internal geometry that minimizes turbulence and energy losses.

Materials

Cast iron (ASTM A48), Ductile iron (ASTM A536), Stainless steel (AISI 316/304), Bronze (C83600/C84400), Carbon steel (ASTM A216 WCB), Special alloys for corrosive applications. Material selection depends on fluid compatibility, pressure rating (typically 10-600 psi), temperature range (-20°C to 200°C), and corrosion resistance requirements.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Surface Finish	Ra 3.2-12.5 μm
Wall Thickness	6-25 mm
Pressure Rating	10-600 psi
Connection Types	Flanged (ANSI/ASME B16.5), Threaded (NPT, BSP)
Temperature Range	-20°C to 200°C
Dimensional Tolerance	±0.5 mm
Hydrostatic Test Pressure	1.5x operating pressure

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

Standards

ISO 5199, ISO 2858, ASME B73.1, API 610, DIN 24256

Parent Products

This component is used in the following industrial products

Feed Pump

A pump component that delivers chemical slurry or liquid to the filtration press at controlled pressure and flow rate.

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Engineering Analysis

Risks & Mitigation

Corrosion failure in chemical applications
Cracking from thermal cycling
Erosion from abrasive fluids
Gasket failure leading to leaks
Cavitation damage

FMEA Triads

Trigger: Chemical corrosion from aggressive fluids
Failure: Wall thinning and eventual leakage
Mitigation: Material selection based on fluid analysis, protective coatings, regular thickness monitoring

Trigger: Thermal stress from rapid temperature changes
Failure: Cracking at stress concentration points
Mitigation: Gradual temperature transitions, thermal stress analysis in design, proper material selection for thermal expansion

Trigger: Cavitation from improper pump operation
Failure: Pitting and erosion of internal surfaces
Mitigation: Proper NPSH margin, impeller design optimization, operation within recommended flow ranges

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerance per ISO 2768-m, pressure vessel compliance per ASME BPVC Section VIII

Test Method

Hydrostatic pressure testing per ISO 5199, non-destructive testing (PT/MT) per ASME Section V, dimensional verification per ISO 17025

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 Pump Casing/Housing

Manufacturer profiles associated with Pump Casing/Housing.

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Frequently Asked Questions

What are the main failure modes for pump casings?

Common failures include corrosion erosion, cracking from thermal stress, mechanical fatigue at mounting points, and wear from cavitation or abrasive particles in the fluid.

How do I select the right material for a pump casing?

Material selection depends on fluid chemistry (pH, chlorides), temperature, pressure requirements, and compatibility with system materials. Stainless steel offers corrosion resistance, cast iron provides cost-effectiveness for non-corrosive applications, and special alloys handle extreme conditions.

What maintenance is required for pump casings?

Regular inspection for cracks, corrosion monitoring, pressure testing, cleaning of internal surfaces, and checking gasket surfaces for flatness. Ultrasonic thickness testing is recommended for corrosion monitoring.

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.

Pump Casing/Housing