INDUSTRY COMPONENT

Adjustment Screw

Precision adjustment screw for sanitary pressure relief valve calibration in hygienic processing systems.

Component Specifications

Definition
A threaded mechanical component designed for precise calibration of pressure relief settings in sanitary valves, featuring hygienic design with smooth surfaces, crevice-free construction, and corrosion-resistant materials to prevent contamination in food, beverage, and pharmaceutical processing applications.
Working Principle
The adjustment screw modifies spring tension within the pressure relief valve mechanism. Turning the screw clockwise increases spring compression, raising the pressure threshold at which the valve opens. Counter-clockwise rotation decreases spring tension, lowering the opening pressure. This allows precise calibration of the relief pressure setting while maintaining hygienic integrity.
Materials
Stainless Steel 316L (AISI 316L) with electropolished finish, meeting FDA and EHEDG standards for food contact surfaces. Alternative: Titanium Grade 2 for highly corrosive environments.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Length25 mm
Head TypeHex socket (Allen) 4 mm
Thread TypeM6 x 1.0 metric fine thread
Pressure Range0.5-10 bar adjustable
Surface FinishRa ≤ 0.8 μm (electropolished)
Temperature Range-20°C to 150°C

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 2852, DIN 11851, 3-A Sanitary Standards 74-03

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Thread galling during adjustment
  • Corrosion in chloride environments
  • Contamination from improper cleaning
  • Calibration drift over time
FMEA Triads
Trigger: Improper torque application during adjustment
Failure: Thread stripping or deformation
Mitigation: Use calibrated torque wrench (2-3 Nm range) and follow manufacturer specifications
Trigger: Exposure to aggressive cleaning chemicals
Failure: Surface pitting and corrosion
Mitigation: Select appropriate material grade (316L vs. Titanium) based on chemical compatibility charts
Trigger: Vibration in processing systems
Failure: Screw loosening and pressure setting drift
Mitigation: Apply thread-locking compound approved for food contact (FDA 21 CFR 175.300)

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.05 mm thread diameter, ±0.1 mm length
Test Method
Pressure decay test per ISO 15848-1, material certification per EN 10204 3.1

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
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Adjustment Screw

Manufacturer profiles associated with Adjustment Screw.

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Frequently Asked Questions

How often should adjustment screws be recalibrated in sanitary pressure relief valves?

Recalibration is recommended every 6-12 months or after any system pressure changes, following ASME BPE guidelines for hygienic systems.

Can adjustment screws be replaced without removing the entire valve from the process line?

Yes, most sanitary pressure relief valves allow screw replacement during routine maintenance without full valve disassembly, minimizing downtime.

What cleaning methods are suitable for adjustment screws in hygienic applications?

CIP (Clean-in-Place) with food-grade detergents at temperatures up to 85°C, followed by SIP (Steam-in-Place) sterilization at 121°C for 20 minutes.

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.

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