High-Performance Disc Spring Stack with Corrosion-Resistant Stainless Steel for

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Spring Rate	Customizable (series, parallel, progressive)
Hysteresis Reduction	Minimized
Friction Mitigation	Guide sizing, lubrication coatings (zinc phosphatization, MoS2)
Sealing Performance	Ensures reliable emergency closing
Material Options	Spring Steel (51CrV4 / 1.8159), Stainless Steel (SUS301, SUS316, 17-7PH), Nickel Superalloys (Inconel 718, Inconel X-750)
Thermal Relaxation	Prevents thermal relaxation
Load Capacity	Increased in parallel stacks
Deflection Range	Increased in series stacks
Outer Diameter	10.0 mm to 800.0 mm
Force Capacity	High initial seating force
Pressure Handling	High-pressure flange bolting systems
Wear Compensation	Compensates for packing wear
Lifespan	Extended under constant cycling
Operating Temperature	-200°C to +650°C
Application	Quarter-turn ball valves, linear gate valves
Stack Type	Series-Parallel (Combined)
Thermal Expansion	Absorbs sudden thermal expansion
Compatibility	Pneumatic, hydraulic, electric actuators
Manufacturing Standards	DIN 2093 (Types A, B, C), ISO 19619
Deflection Capability	Long sealing strokes

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Product Specification


Spring Rate	Customizable (series, parallel, progressive)	Hysteresis Reduction	Minimized
Friction Mitigation	Guide sizing, lubrication coatings (zinc phosphatization, MoS2)	Sealing Performance	Ensures reliable emergency closing
Material Options	Spring Steel (51CrV4 / 1.8159), Stainless Steel (SUS301, SUS316, 17-7PH), Nickel Superalloys (Inconel 718, Inconel X-750)	Thermal Relaxation	Prevents thermal relaxation
Load Capacity	Increased in parallel stacks	Deflection Range	Increased in series stacks
Outer Diameter	10.0 mm to 800.0 mm	Force Capacity	High initial seating force
Pressure Handling	High-pressure flange bolting systems	Wear Compensation	Compensates for packing wear
Lifespan	Extended under constant cycling	Operating Temperature	-200°C to +650°C
Application	Quarter-turn ball valves, linear gate valves	Stack Type	Series-Parallel (Combined)
Thermal Expansion	Absorbs sudden thermal expansion	Compatibility	Pneumatic, hydraulic, electric actuators
Manufacturing Standards	DIN 2093 (Types A, B, C), ISO 19619	Deflection Capability	Long sealing strokes
High Light	Corrosion-Resistant Disc Spring Stack ，High-Performance Disc Spring Stack ，Series-Parallel Disc Spring Stack

Industrial Valve Actuators & Severe Process Piping

High-Performance Disc Spring Stack for Industrial Valve Actuators

In the demanding environments of fluid control and chemical processing, maintaining precise, continuous torque and linear force is essential for operational safety. Jiangsu Sanzhong Elastic Technology Co., Ltd. offers precision-engineered Disc Spring Stack configurations specifically optimized for heavy-duty industrial valve actuators and emergency shutdown (ESD) systems. When conventional coil springs fail due to space constraints or high force requirements, our custom-stacked disc springs provide a reliable solution, ensuring consistent valve seating and preventing catastrophic fluid leakage.

SERIES-PARALLEL (COMBINED) STACK TYPE

This configuration provides BOTH increased load capacity AND increased deflection capability.

[Diagram showing series-parallel disc spring configuration]

Key Benefit: Ideal for large-diameter control valves requiring high initial seating force combined with long sealing strokes.

Our engineering team analyzes the specific force-deflection curves required for automated valve systems. By configuring the Disc Spring Stack in various orientations—such as series, parallel, or progressive combinations—we customize the spring rate to match the exact mechanics of pneumatic, hydraulic, or electric actuators. This precision minimizes friction loss, reduces hysteresis, and extends the operational lifespan of the entire valve assembly, even under constant cycling.

Target Client Applications

Pneumatic & Hydraulic Valve Actuators: Integrated into spring-return actuators for quarter-turn ball valves and linear gate valves to ensure reliable emergency closing.
Petrochemical Control Valves: Installed within packing glands and main control valve stems to compensate for packing wear and thermal relaxation.
Refinery Piping Infrastructure: Positioned on high-pressure flange bolting systems to absorb sudden thermal expansion and prevent fugitive emissions.

Technical Specifications & Product Parameters

Available Materials	High-grade Spring Steel (51CrV4 / 1.8159), Corrosion-Resistant Stainless Steel (SUS301, SUS316, 17-7PH), and Nickel Superalloys (Inconel 718, Inconel X-750)
Manufacturing Standards	Fully compliant with DIN 2093 (Types A, B, and C) and international ISO 19619 quality management specifications
Outer Diameter (OD) Availability	From 10.0 mm up to 800.0 mm to accommodate large-scale actuator shafts
Friction Mitigation	Specialized guide sizing and lubrication coatings (such as zinc phosphatization or MoS2) applied to minimize internal friction within the stack
Operating Temperature Limits	Engineered to perform reliably from cryogenic temperatures -200°C up to extreme thermal environments of +650°C (when using superalloys)

Company Details

Bronze Gleitlager

Bronze Sleeve Bushings

and

Graphite Plugged Bushings

from Quality China Factory

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Business Type:

Manufacturer,Exporter,Seller 


Year Established:

2006 


Total Annual:

1.2M-1.4M
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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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