INDUSTRY COMPONENT

Case

Protective housing for pressure gauge mechanisms that provides structural integrity and environmental protection.

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Component Specifications

Definition
The case is the outer protective housing of a pressure gauge assembly, designed to enclose and shield the internal measurement mechanism (Bourdon tube, diaphragm, or capsule) from external environmental factors such as dust, moisture, chemicals, and physical impacts. It provides structural support for mounting the gauge, ensures proper alignment of components, and often includes features like pressure relief vents or seals for hazardous environments. Cases are engineered to maintain calibration stability under varying operational conditions while allowing clear visibility of the dial through a window or lens.
Working Principle
The case functions as a rigid enclosure that protects the sensitive internal components from external disturbances. It maintains a stable internal environment to prevent mechanical misalignment, corrosion, or contamination that could affect measurement accuracy. By providing a sealed or vented barrier, it ensures the gauge responds only to the intended pressure media while withstanding operational stresses like vibration, temperature fluctuations, and overpressure conditions.
Materials
Typically made from corrosion-resistant materials: stainless steel (AISI 304/316 for general industrial use), aluminum alloys (for lightweight applications), brass (for non-corrosive environments), or engineered plastics (polycarbonate, ABS for cost-effective or chemical-resistant needs). Seals and gaskets are often silicone, Viton, or EPDM rubber.
Technical Parameters
  • Weight 0.1-2.0 kg depending on material and size
  • Mounting Direct stem mount, surface mount, panel mount, or flush mount
  • Case Diameter 40mm, 50mm, 63mm, 100mm standard sizes
  • Connection Size 1/4" NPT, 1/2" NPT, G1/4, M20x1.5
  • Pressure Rating Up to 10,000 psi (690 bar) depending on design
  • Window Material Tempered glass, polycarbonate, or acrylic
  • Ingress Protection IP65, IP67, or NEMA 4X for environmental sealing
Standards
ISO 5171, DIN 16085, ASME B40.100

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Case.

pressure gauge case gauge housing instrument enclosure industrial pressure measurement protective casing stainless steel gauge case Case Case in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Pressure Gauge Assembly

A pressure measurement component integrated into homogenizer equipment

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Engineering Analysis

Risks & Mitigation
  • Corrosion leading to structural failure
  • Improper sealing causing internal contamination
  • Material incompatibility with process media
  • Overpressure causing case rupture
  • Vibration-induced fatigue cracks
FMEA Triads
Trigger: Corrosive environment exposure
Failure: Case wall perforation or seal degradation
Mitigation: Use corrosion-resistant materials (stainless steel 316), apply protective coatings, implement regular inspection schedules
Trigger: Excessive vibration or mechanical shock
Failure: Crack formation at stress points or window breakage
Mitigation: Design with reinforced ribs, use shock-absorbing mounts, select tempered glass or polycarbonate windows
Trigger: Improper material selection for process media
Failure: Chemical attack leading to case deterioration
Mitigation: Conduct material compatibility analysis, use lined cases or chemically resistant plastics, specify appropriate gasket materials

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Dimensional tolerances per ISO 2768-m, pressure containment per ASME B40.100
Test Method
Hydrostatic pressure testing, IP/NEMA ingress protection testing, material certification (mill test reports), vibration testing per IEC 60068-2-6

Buyer Feedback

★★★★☆ 4.7 / 5.0 (12 reviews)

"The technical documentation for this Case is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Case so far."

"Testing the Case now; the technical reliability results are within 1% of the laboratory datasheet."

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Frequently Asked Questions

What are the main differences between stainless steel and plastic pressure gauge cases?

Stainless steel cases offer superior durability, corrosion resistance, and temperature tolerance for harsh industrial environments, while plastic cases are lighter, cost-effective, and suitable for less demanding applications or chemical compatibility needs.

How does case design affect pressure gauge accuracy?

Proper case design minimizes internal stress, vibration transmission, and thermal expansion effects that can distort the measurement mechanism. Sealed cases prevent contamination, while vented cases equalize atmospheric pressure for gauge-type instruments.

Can pressure gauge cases be customized for specific applications?

Yes, cases can be customized with special coatings, materials, mounting configurations, window types, or explosion-proof designs to meet specific environmental, safety, or operational requirements.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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