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Adjusting Screw Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

The adjusting screw is a threaded mechanical component in pressure reducing valves that controls the position of the spring-loaded diaphragm or piston, thereby regulating the outlet pressure by varying the spring compression force. It enables fine-tuning of pressure settings through rotational movement, typically requiring specific torque values for proper calibration.

Working Principle

The adjusting screw works by compressing or decompressing a spring through rotational movement. As the screw is turned clockwise, it increases spring compression, which raises the force against the diaphragm or piston, resulting in higher outlet pressure. Counterclockwise rotation reduces spring compression, lowering the outlet pressure. This mechanical adjustment allows precise control of pressure reduction ratios.

Materials

Typically made from corrosion-resistant materials: stainless steel (AISI 304/316), brass (C36000/C37700), or alloy steel with protective coatings. High-temperature applications may use Inconel or titanium alloys.

Technical Parameters

Length 20-60 mm
Head Type Hex socket, slotted, or knurled
Thread Type Metric (M6-M12) or UNC/UNF
Thread Pitch 1.0-1.75 mm
Torque Range 2-15 Nm
Pressure Range 0-25 bar
Temperature Range -20°C to 200°C

Standards

ISO 4762, DIN 912, ASME B18.3

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Adjusting Screw.

Parent Products

This component is used in the following industrial products

Pressure Reducing Valve

A valve that automatically reduces a higher inlet pressure to a steady lower outlet pressure regardless of flow variations.

View Product Details

Safety Relief Valve

A pressure relief device designed to automatically open and discharge fluid when pressure exceeds a predetermined set point to prevent equipment failure.

View Product Details

Engineering Analysis

Risks & Mitigation

Over-tightening causing spring damage
Thread corrosion leading to seizure
Improper calibration resulting in pressure instability
Material incompatibility with process media

FMEA Triads

Trigger: Corrosion from chemical exposure
Failure: Thread seizure preventing adjustment
Mitigation: Use corrosion-resistant materials and protective coatings

Trigger: Excessive torque during adjustment
Failure: Stripped threads or spring deformation
Mitigation: Implement torque-limiting tools and operator training

Trigger: Vibration in operation
Failure: Screw loosening and pressure drift
Mitigation: Apply thread-locking compounds and regular inspection

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±0.05 mm thread diameter, ±0.1 mm length

Test Method

Torque-to-turn testing, pressure calibration verification, material certification per ASTM/EN standards

Buyer Feedback

★★★★☆ 4.6 / 5.0 (27 reviews)

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

"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Adjusting Screw meets all ISO standards."

"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Adjusting Screw arrived with full certification."

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Frequently Asked Questions

How often should adjusting screws be recalibrated?

Recalibration frequency depends on operating conditions: typically every 6-12 months for continuous operation, or whenever pressure fluctuations exceed ±5% of setpoint.

Can adjusting screws be replaced with different thread types?

No, adjusting screws must match the valve's thread specifications exactly. Using incompatible threads can cause cross-threading, leaks, or calibration errors.

What maintenance is required for adjusting screws?

Regular inspection for thread wear, lubrication with compatible anti-seize compounds, and verification of torque settings during preventive maintenance cycles.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Adjusting Screw