Adjustment Knob/Spring: Temperature Range -20°C to 80°C

Component Specifications

Definition

A precision mechanical component consisting of a calibrated knob and spring assembly used in air supply regulators to manually adjust and maintain desired output pressure by controlling the tension on the regulator's diaphragm or piston mechanism. The spring provides consistent return force while the knob allows fine-tuning of pressure settings.

Working Principle

The adjustment knob rotates to compress or decompress the spring, which applies varying force to the regulator's control element (diaphragm or piston). This force opposes the inlet pressure, creating a balanced state that determines the regulated output pressure. Clockwise rotation increases spring tension and output pressure, while counterclockwise rotation decreases both.

Materials

Knob: Engineering plastic (POM/Nylon) or aluminum alloy; Spring: Stainless steel (302/316) or music wire; Internal components: Brass or stainless steel; Seals: Nitrile rubber or fluorocarbon.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Spring Rate	5-50 N/mm
Thread Size	M6-M12
Pressure Range	0-150 psi (0-10.3 bar)
Rotation Torque	0.2-1.5 Nm
Temperature Range	-20°C to 80°C
Adjustment Resolution	±0.5% FS

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 6952, DIN 3852

Parent Products

This component is used in the following industrial products

Air Supply Regulator

A device that controls and maintains consistent air pressure and flow rate to the spraying system.

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Engineering Analysis

Risks & Mitigation

Spring fatigue leading to pressure drift
Thread wear causing inaccurate settings
Contamination affecting smooth operation
Over-rotation damaging internal stops

FMEA Triads

Trigger: Spring material fatigue
Failure: Pressure drift exceeding ±5%
Mitigation: Use certified spring materials with documented fatigue life; implement preventive replacement schedule

Trigger: Contaminant ingress
Failure: Stiff or stuck adjustment
Mitigation: Install protective boots; use IP54 or higher rated enclosures; regular cleaning protocols

Trigger: Over-torque during adjustment
Failure: Thread stripping or internal damage
Mitigation: Install torque-limiting features; operator training; clear torque specifications on labeling

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Pressure setting accuracy: ±2% of full scale; Spring rate tolerance: ±10%; Thread fit: 6g/6H

Test Method

ISO 6952 for pneumatic components; Spring testing per ISO 10243; Torque testing per DIN 513

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

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Inspection readiness

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Supplier transparency

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Manufacturers of Adjustment Knob/Spring

Manufacturer profiles associated with Adjustment Knob/Spring.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

How often should adjustment knobs be calibrated?

Calibration should be performed annually or after 10,000 adjustment cycles, whichever comes first, to maintain pressure accuracy within ±2% of set point.

Can different spring rates be used in the same knob assembly?

Yes, springs with different rates can be installed to change the pressure range, but must be matched to the regulator's design specifications and recalibrated.

What causes adjustment knob stiffness over time?

Contamination ingress, spring fatigue, or seal degradation can increase friction. Regular cleaning and preventive maintenance are recommended.

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.

Adjustment Knob/Spring