Rotary Disc for S-Valve Assemblies

Component Specifications

Definition

The Rotary Disc is a critical rotating component within S-Valve Assemblies, designed to regulate, divert, or shut off the flow of bulk materials, powders, or granular substances in pneumatic conveying and processing systems. It operates through controlled rotational movement to align ports or channels, ensuring precise material handling with minimal leakage.

Working Principle

The disc rotates on a central axis within a housing, aligning its ports with corresponding inlet and outlet channels in the valve body. This rotational alignment controls material flow direction, rate, or isolation. Sealing is achieved through tight tolerances, gaskets, or sealing rings between the disc and housing surfaces.

Materials

Typically manufactured from wear-resistant materials: hardened stainless steel (e.g., AISI 304, 316), carbon steel with coatings, or engineered polymers (e.g., UHMW-PE, PTFE) for corrosion or contamination resistance. Surface treatments like hardening or plating may be applied.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Diameter	50-500 mm
Thickness	10-50 mm
Rotation Speed	Up to 60 RPM
Temperature Range	-20°C to 200°C
Operating Pressure	Up to 10 bar
Port Configuration	2 to 4 ports

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 5211, DIN 3337

Parent Products

This component is used in the following industrial products

S-Valve Assembly

A specialized valve assembly for precise material flow control in delivery systems.

View Product Details

Engineering Analysis

Risks & Mitigation

Wear from abrasive materials
Seal failure leading to leakage
Misalignment causing flow disruption
Corrosion in harsh environments

FMEA Triads

Trigger: Abrasive material flow
Failure: Excessive wear on disc surface
Mitigation: Use hardened materials or wear-resistant coatings; implement regular inspection schedules.

Trigger: Seal degradation
Failure: Material leakage
Mitigation: Use compatible seal materials; monitor and replace seals periodically; ensure proper installation.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.05 mm for critical dimensions

Test Method

Pressure testing per ISO 5208, dimensional inspection, and rotational torque measurement

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

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Rotary Disc

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Jiangsu Sunkaier Industrial Technology Co., Ltd.

Jiangsu, CN

Also makes: Oxidation System, Centrifugal Pump, Mixing Equipment and 2 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Rotary Disc Dryer”
View source page ↗ sunkaier.com · checked 2026-09-05

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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

What is the primary function of a Rotary Disc in an S-Valve Assembly?

It controls the direction and flow of materials by rotating to align ports, enabling diversion, shut-off, or metering in processing systems.

How do you maintain a Rotary Disc?

Regular inspection for wear, cleaning to prevent material buildup, lubrication of bearings if applicable, and replacement of seals to ensure proper sealing.

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.

Rotary Disc