INDUSTRY COMPONENT

Spring

A mechanical spring used in control valves to provide force for valve actuation and position control.

Component Specifications

Definition
A precision-engineered elastic component in control valves that stores mechanical energy through deformation and releases it to exert force, enabling precise regulation of fluid flow by controlling valve disc or plug position against process pressure.
Working Principle
Operates on Hooke's Law (F=kx) where applied force is proportional to displacement; in control valves, it counteracts process forces to maintain desired valve position, with spring rate determining stiffness and response characteristics.
Materials
High-carbon steel (AISI 1050-1095), stainless steel (302, 316, 17-7PH), Inconel (for high-temperature applications), music wire (ASTM A228), phosphor bronze (for corrosive environments)
Technical Parameters
  • End Type Closed and ground, open ends, squared ends
  • Free Length 20-300 mm
  • Spring Rate 10-500 N/mm
  • Solid Height 15-250 mm
  • Wire Diameter 0.5-10 mm
  • Maximum Deflection 60% of free length
  • Mean Coil Diameter 5-100 mm
  • Operating Temperature -40°C to 400°C
  • Load at Working Height 50-5000 N
  • Number of Active Coils 3-20
Standards
ISO 10243, DIN 2098, ASTM A125, JIS B 2704

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Spring.

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Spring fatigue failure
  • Corrosion in aggressive environments
  • Over-compression beyond solid height
  • Temperature-induced creep
  • Incorrect spring rate selection
FMEA Triads
Trigger: Cyclic loading beyond endurance limit
Failure: Fatigue fracture
Mitigation: Regular inspection, proper material selection with adequate fatigue strength, stress-relieving treatments
Trigger: Exposure to corrosive fluids
Failure: Corrosion-induced weakening
Mitigation: Use corrosion-resistant materials (stainless steel, Inconel), protective coatings, regular maintenance
Trigger: Operating at temperatures beyond material limits
Failure: Loss of spring force due to creep
Mitigation: Select appropriate high-temperature alloys, implement temperature monitoring, design with safety margins

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±10% on spring rate, ±2% on load at working height per ISO 10243
Test Method
Compression testing per ASTM E9, fatigue testing per ISO 12106, material verification per ASTM A370

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Frequently Asked Questions

What is the purpose of a spring in control valves?

The spring provides the necessary force to position the valve plug or disc, counteracting process pressure to achieve precise flow control and ensure fail-safe operation.

How do I select the right spring for a control valve?

Consider process pressure, required spring rate, operating temperature, corrosion resistance needs, space constraints, and compliance with industry standards like ISO 10243.

What materials are commonly used for control valve springs?

High-carbon steel for general applications, stainless steel for corrosion resistance, and Inconel for high-temperature environments above 400°C.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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