Industrial valve control systems and pipeline equipment for fluid management solutions

Home / Products / Butterfly Valves / Lug Type Butterfly Valves / China Factory Worm Gear Flanged Butterfly Valve Ductile Iron Concentric Soft Seal Butterfly Valve

Product Category

China Factory Worm Gear Flanged Butterfly Valve Ductile Iron Concentric Soft Seal Butterfly Valve

China Factory Worm Gear Flanged Butterfly Valve Ductile Iron Concentric Soft Seal Butterfly Valve

The D41X Type Soft-sealed Butterfly Valve is used for bidirectional opening-closing orflow regulation in pipelines, with an adjustment range of 0 to 90 degrees of opening. It isapplicable to air conditioning systems, water supply and drainage systems, fire protectionsystems as well as most fluid pipelines, and suitable for media such as clean water, gasand oil products.

Quantity:
Availability:





Inquire Add to Basket

Product Description

Design & Engineering Highlights

Direct-Flange Vulcanized Seat: Integrates a bonded elastomeric seat liner through a high-pressure vulcanization process, allowing direct installation between standard pipeline flanges without dedicated adapter gaskets.
Pinless Disc Architecture: Utilizes a smooth, pin-free disc configuration that eliminates potential leak paths around hardware, ensuring clean aesthetics and elevated fluid-tight performance.
Zero-Clearance Drive Shaft: Features a proprietary tapered flat stem interface designed for precise torque transmission, maintaining optimal seating alignment and maximizing bubble-tight sealing integrity over extended operational cycles.
Low-Torque Mechanical Actuation: Outfitted with a high-efficiency drive assembly for effortless quarter-turn operation and exact end-of-stroke positioning.

Standards Compliance & Technical Testing

Flange Mating Standard: Dimensions and drilling conform to GB/T 17241.1-2024 and GB/T 9124.1-2019 piping connection specifications.
Hydrostatic & Pressure Testing: Shell integrity and seat leakage rates are fully verified in accordance with GB/T 13927-2022 testing criteria.
Detailed Specifications:
- Operational Metrics: Refer to Table 1
- Material Breakdown: Refer to Table 2
- Dimensional Drawings: Refer to Table 3

Table 1:Technical Parameters Table
PN	1.0MPa	1.6MPa	2.5MPa
Body Test	1.5MPa	2.4MPa	3.75MPa
Seal Test	1.1MPa	1.76MPa	2.75MPa
Temperature	0℃~80℃
Actuation Method	Handle,worm gear,pneumatic,electric,etc.
Multiple Models Available	D41X,D341X,D641X,D941X,etc.

Table 2:Main Component Materials
Part Name	Materials
Body	Ductile lron/Stainless SteeV/Cast Steel
Disc	Ductile Iron/Stainless Steel/Cast Steel
Seat	NBR/EPDM/PTFE
Sealing Ring	NBR/EPDM/PTFE
Stem	Stainless Steel
Fasteners	Carbon SteelVStainless Steel

Precision Valve Manufacturing

Professional Valve Manufacturer | Integrated Manufacturing

Raw Material

We select high-quality raw materials according to product specifications and international standards. All incoming materials are carefully inspected to ensure chemical composition, mechanical properties and traceability.

Forging & Casting

Advanced forging and casting processes are used to produce strong and reliable valve bodies and components. Strict process control ensures uniform structure, dimensional accuracy and excellent mechanical performance.

CNC Machining

Our CNC machining equipment provides precise and consistent processing of valve components. Critical dimensions, threads and sealing surfaces are strictly controlled to ensure accurate assembly and reliable sealing performance.

Shot Blasting & Coating

Valve surfaces are professionally shot blasted to remove rust, scale and impurities. Protective coatings are then applied according to customer requirements, providing excellent corrosion resistance and a durable surface finish.

Pressure Testing

Every valve undergoes strict pressure testing before shipment. Body and seat tests are performed according to applicable standards and customer specifications to verify pressure resistance and sealing reliability.

Quality Inspection

Our quality control team conducts comprehensive inspections throughout the production process. Finished valves are checked for dimensions, appearance, materials, pressure performance and overall quality before final approval and shipment.

For more products, please contact us