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China factory - Jiangsu  Sunzo  Spring  Elasticity  Technology Co., Ltd

Jiangsu Sunzo Spring Elasticity Technology Co., Ltd

  • China,Nanjing
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China Heavy Duty Belleville Disc Springs for Valves | SUNZO Factory
China Heavy Duty Belleville Disc Springs for Valves | SUNZO Factory

  1. China Heavy Duty Belleville Disc Springs for Valves | SUNZO Factory
  2. China Heavy Duty Belleville Disc Springs for Valves | SUNZO Factory

Heavy Duty Belleville Disc Springs for Valves | SUNZO Factory

  1. MOQ: Negotiable
  2. Price: Negotiable
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Usage Industrial
Surfacetreatment Zinc Plated
Material Steel
Loadcapacity 500 N
Trademark Sunzo or OBM
Type Wave Washer
Corrosionresistance High
Packaging Details Carton
HS Code 7320909000
Temperaturerange -40°C to 150°C
Application Valve Spring Retention
Thickness 2 mm
Packagequantity 100 pieces per box
Delivery Time Negotiable
Origin Yangzhou China
Color Silver
Hardness HRC 40-50
Load Type Compression
Payment Terms Negotiable
Shape Disk
Innerdiameter 12 mm
Productname Valve Spring Washer
Outerdiameter 25 mm
Standard DIN 137
Brand Name Sunzo
Certification CE/IATF16949/45001/14001/9001
Place of Origin Sihong, China

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  1. Product Details
  2. Company Details

Product Specification

Usage Industrial Surfacetreatment Zinc Plated
Material Steel Loadcapacity 500 N
Trademark Sunzo or OBM Type Wave Washer
Corrosionresistance High Packaging Details Carton
HS Code 7320909000 Temperaturerange -40°C to 150°C
Application Valve Spring Retention Thickness 2 mm
Packagequantity 100 pieces per box Delivery Time Negotiable
Origin Yangzhou China Color Silver
Hardness HRC 40-50 Load Type Compression
Payment Terms Negotiable Shape Disk
Innerdiameter 12 mm Productname Valve Spring Washer
Outerdiameter 25 mm Standard DIN 137
Brand Name Sunzo Certification CE/IATF16949/45001/14001/9001
Place of Origin Sihong, China
High Light Heavy Duty Valve Spring WasherHigh Stress Valve Spring Washer500N belleville disc spring washer
Heavy Duty Belleville Disc Springs for Valves | SUNZO Factory
Consistent Performance in Severe High Stress Environments

Premium heavy duty Belleville disc springs for valves manufactured by SUNZO. Engineered to provide consistent preloading performance in severe high stress environments.

In safety-critical industrial fluid control, emergency shutdown systems (ESD) and quick-action stop valves act as the final defense line against catastrophic overpressure, hazardous fluid leaks, and sudden processing failures. Within these rapid-response assemblies, the performance of the valve activation system relies completely on a continuous energy source. If a spring stack suffers from sudden load decay or stress relaxation under high-frequency operation, the emergency valve can fail to close completely, risking severe pipeline ruptures, environmental contamination, and multi-million dollar operational shutdowns.

As an elite, globally recognized high-tech innovator in advanced precision hardware, Jiangsu Sunzo Spring Elasticity Technology Co., Ltd. (SUNZO) manufactures premium Heavy Duty Belleville Disc Springs for Valves. Engineered strictly under international engineering standards like JB/T8064, our conical elastic components provide an unyielding safety guarantee for petrochemical complexes, thermal power stations, cleanroom instrumentation facilities, and major control valve manufacturers worldwide.

1. Advanced Material Selection & Isothermal Quenching for High Stress Environments

To guarantee that our valve disc springs maintain an absolute, unwavering elastic response, Sunzo implements rigorous metallurgical controls and advanced structural heat-treatment engineering:

Ultra-Premium Spring Steel Procurement

We utilize high-purity, vacuum-degassed spring steel alloys specifically chosen to resist micro-structural defects and internal impurities. Our standard material matrix features high-grade 50CrV5, 5CrS, and 60Si2Mn for standard heavy machinery, alongside precipitation-hardening and austenitic stainless steels like PH 17-7, PH 17-4, SUS301, SUS304, and SUS316 for highly corrosive chemical streams.

Advanced Isothermal Quenching Heat Treatment

Standard heat treatment can introduce internal micro-stresses and uneven grain distribution, leaving components vulnerable to early fatigue failure. Sunzo eliminates this risk by utilizing fully automated isothermal quenching furnaces. By heating the alloys to precise austenitizing points and transferring them directly into a hot salt bath kept at an exact temperature, we transform the steel matrix into a highly uniform Bainite micro-structure.

Eliminating Stress Relaxation

This dedicated thermal engineering delivers critical advantages for hardware operating in High Stress Environments:

  • Consistent Force Profiles: The uniform bainitic grain structure ensures that our springs deliver a consistent, predictable elastic force across millions of cycles, eliminating unexpected pressure drops.

  • Immunity to Stress Relaxation: Even when held under continuous, high-load compression inside valve bonnets for extended periods, the springs resist permanent deformation and structural setting.

  • Extended Fatigue Lifecycles: This micro-structural uniformity eliminates the typical grain-boundary fractures caused by rapid, high-frequency valve open-and-close sequences.

2. Dynamic Operational Mechanism in Quick-Action Stop Valves

Sunzo’s heavy-duty disc springs act as reliable mechanical batteries, storing massive energy potentials to execute split-second safety closures:

[Valve Open Position] ➔ Hydraulic Preload Compresses Stacks ➔ [Steady Fluid Circulation]
                                                                        │
[System Failure / Trip] ➔ Hydraulic Pressure Drops Instantly ➔ [Spring Stack Quickly Releases]
                                                                        │
                                                             Valve Closes Immediately
  • Stable Open State: When the quick-action stop valve is in the open position, the Sunzo disc spring stack is held under continuous hydraulic preload, keeping the valve mechanism completely steady to ensure smooth fluid circulation.

  • Instantaneous Emergency Closure: The moment a system failure occurs and hydraulic line pressure drops, the stored mechanical energy in the spring stack is released instantly. This movement drives the valve stem down to seal the line immediately, isolating potential hazards within milliseconds.

3. High-Performance Engineering Features & Technical Matrix

To optimize the functional life of our components and simplify maintenance routines, Sunzo integrates specialized engineering enhancements into our valve spring stacks:

Ball-Bearing Centered Guidance Stacks

To maximize mechanical efficiency and prevent uneven wear across long multi-turn spring combinations, Sunzo utilizes custom ball-bearing centered guidance systems. This configuration drastically minimizes internal friction, eliminates lateral buckling, and extends the service life of the entire stack assembly.

Continuous Set-Loss Self-Adjustment

Over time, valve body gaskets undergo unavoidable compression setting and micro-wear. Sunzo disc spring stacks feature a built-in self-adjusting function. As a gasket loses its original thickness, the conical spring automatically expands to fill the micro-gap, maintaining constant sealing pressure and reducing field maintenance overhead.

Technical Performance Envelope
Engineering Parameter Certified Technical Value / Performance Baseline Standard Compliance Framework
Outer Diameter Range From 16 mm up to 534 mm JB/T8064 Standard Blueprint
Material Thickness ($t$) From 0.4 mm up to 10.0 mm High-Precision Progressive Stamping
Microstructural Phase 100% Uniform Bainite Matrix Achieved via Isothermal Quenching
Annual Production Output Over 40,000,000 Pieces / Year High-Volume Supply Chain Stability
Standard Export Delivery Within 10 Business Days Supported by Ready-to-Ship Inventory
4. Comprehensive Custom Surface Engineering Portfolio

To ensure our carbon steel and alloy variants resist premature environmental degradation and aggressive chemical atmospheres, Sunzo offers customized surface finishes:

  • Automated Phosphating & Oil: Creates a crystalline surface layer that holds rust-preventative lubricants, ideal for standard industrial gearboxes.

  • Electrophoresis / E-Coating: Applies a highly uniform organic polymer film via an electrical bath, providing total coverage across internal corners and edges.

  • Oxidize Bluing: Forms a thin, protective black iron oxide coating ($Fe_3O_4$) that maintains tight dimensional limits on precision components.

  • Mechanical Zinc Plating: Deposits a thick protective zinc barrier without introducing atomic hydrogen, completely avoiding hydrogen embrittlement in high-strength steels.

5. The SUNZO Advantage: High Volume Scaling & Certified Assurance
Massive Stamping Infrastructure

Jiangsu Sunzo Spring Elasticity Technology Co., Ltd. (SUNZO) operates a state-of-the-art manufacturing infrastructure designed to handle large-scale global contract orders. Housing more than 200 large-scale punching machines, automated progressive stamping lines, and precision multi-axis CNC machinery nodes, Sunzo easily scales production from specialized custom prototypes to high-volume container shipments with absolute batch-to-batch uniformity.

[200+ Punching Systems] ➔ [Isothermal Salt Bath Quenching] ➔ [100% Computerized Load Testing]
   Massive Batch Scaling             Bainitic Anti-Relaxation Structure          Zero-Defect Quality Verification
Certified Quality and Logistics Stability

Our modern facilities operate under strict international management systems, holding active quality certifications for IATF 16949 (Automotive Quality Management) and ISO 9001 (Quality Management). Every production batch is packed using export-grade standards, including heavy-duty reinforced cartons or fumigated wooden boxes secured on solid wooden pallets.

Located near major international shipping networks like Shanghai Port, Sunzo ensures rapid global distribution to 42 countries. Our dedicated engineering division provides complete Finite Element Analysis (FEA) designs, custom dimension stamping, and certified material verification records. Contact our Nanjing R&D office or our Sihong manufacturing base today to eliminate stress relaxation in your fluid networks, request raw samples, and secure your competitive commercial quotes.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Exporter,Seller

  • Year Established:

    2006

  • Total Annual:

    1.2M-1.4M

  • Employee Number:

    160~200

  • Ecer Certification:

    Verified Supplier

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  • Jiangsu Sunzo Spring Elasticity Technology Co., Ltd
  • No.20, Xinghuo Road, Nanjing High-tech Development Zone
  • https://www.spring-disc.com/

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