INDUSTRY COMPONENT

Adjustment Cap

Adjustment cap for pressure relief device calibration and maintenance

View Specifications

Component Specifications

Definition
A precision-engineered threaded cap component used in pressure relief devices to provide controlled access for adjusting the set pressure, performing maintenance, and sealing the adjustment mechanism from environmental contaminants. It typically features a tamper-evident design and incorporates sealing elements to maintain system integrity.
Working Principle
The adjustment cap functions as a protective and operational interface for the pressure adjustment mechanism. When rotated, it engages with internal threads to either compress or release the spring tension in the relief valve, thereby changing the set pressure at which the device activates. Its sealing surfaces prevent fluid leakage and contamination ingress while maintaining the calibrated pressure setting.
Materials
Stainless Steel 316L (ASTM A276), Buna-N rubber seals (ASTM D2000), optional PTFE coating for chemical resistance
Technical Parameters
  • Finish Passivated per ASTM A967
  • Weight 85g
  • Seal Type O-ring (AS568-214)
  • Thread Size M20x1.5
  • Temperature Range -40°C to 200°C
  • Torque Specification 25-30 Nm
  • Operating Pressure Range 0-1000 psi
Standards
ISO 4126-1, ASME BPVC Section VIII, DIN 3320, API 526

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Adjustment Cap.

pressure relief valve adjustment cap industrial safety components valve calibration parts pressure control accessories maintenance caps Adjustment Cap Adjustment Cap in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Pressure Relief Device

A safety component designed to automatically release excess pressure from a closed system to prevent equipment failure or rupture.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Improper adjustment leading to overpressure conditions
  • Cross-threading during installation
  • Seal failure causing system contamination
  • Unauthorized tampering with pressure settings
FMEA Triads
Trigger: Corrosion from chemical exposure
Failure: Thread seizure preventing adjustment
Mitigation: Use corrosion-resistant materials and protective coatings
Trigger: Overtorquing during installation
Failure: Thread stripping or seal deformation
Mitigation: Implement torque-controlled installation procedures
Trigger: Material fatigue from cyclic loading
Failure: Crack propagation leading to catastrophic failure
Mitigation: Regular inspection and replacement per maintenance schedule

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.05mm thread pitch diameter, ±0.1mm sealing surface flatness
Test Method
Helium leak test per ASTM E499, pressure decay test at 1.5x working pressure, torque verification per ISO 16047

Buyer Feedback

★★★★☆ 4.6 / 5.0 (8 reviews)

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

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

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

Related Components

Inspection Frame
Structural support component in automated fabric inspection systems that holds cameras, sensors, and lighting for defect detection.
Machine Frame
The rigid structural foundation of a CNC wood router that provides stability, vibration damping, and precision alignment for cutting operations.
pH Sensor Assembly
Precision pH sensor assembly for automated monitoring and dosing systems in industrial applications
Load Cell Assembly
Precision load cell assembly for automated powder dispensing systems

Frequently Asked Questions

How often should adjustment caps be inspected?

Adjustment caps should be visually inspected during routine maintenance cycles (typically every 6-12 months) and replaced if signs of corrosion, thread damage, or seal degradation are observed.

Can adjustment caps be reused after removal?

Yes, if undamaged and seals are replaced. However, torque values must be verified upon reinstallation to ensure proper sealing and pressure setting retention.

What causes adjustment cap leakage?

Common causes include damaged O-rings, cross-threading during installation, insufficient torque, corrosion on sealing surfaces, or thermal cycling effects on seal materials.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Get Quote for Adjustment Cap

Adjustment Bolts/Screws Adjustment Dial/Knob