Product Features
● Flanged Body Connection: The integral flange ends connect directly to matching pipeline flanges, providing stable positioning and reliable pipeline support.
● Resilient Rubber Seat: Provides dependable shut-off for compatible media under the specified pressure and temperature conditions.
● Manual Lever Operation: Quarter-turn operation allows quick opening and closing without electric or pneumatic power.
● Position Indication: The handle position gives a clear visual indication of the disc opening position.
● Multi-Position Control: The notched locking plate allows the disc to be held at different opening positions for basic flow adjustment.
● Centric Disc Design: A simple and proven construction supports stable operation and convenient maintenance.
● Bidirectional Shut-Off: The resilient-seated centric construction can provide shut-off in either flow direction when correctly selected and installed.
● Multiple Material Options: Different body, disc, stem and seat combinations are available for common water and utility applications.
Market Positioning
● Standard Series: This model is positioned as a cost-effective standard-series butterfly valve for common pipeline applications and local distribution markets.
● Competitive Product Configuration: Mature construction and practical material combinations help provide an attractive balance between price and performance.
● Suitable for Local Market Development: The familiar flanged design is easy for distributors, contractors and end users to understand, specify and promote.
● Flexible Material Selection: Body, disc, stem and seat materials can be selected according to the medium and target market.
● Convenient for Product-Range Expansion: Suitable for customers adding a competitively positioned manual flanged butterfly valve to an existing portfolio.
● Private-Label Friendly: Product marking, nameplate, handle colour and packaging can be discussed according to order requirements.
Cost and Commercial Advantages
● Competitive Purchasing Cost: Standardized construction and commonly used material combinations make the product suitable for budget-conscious projects and distribution channels.
● Balanced Performance and Budget: Focuses on the core functions required in ordinary water and utility systems without unnecessary structural complexity.
● Stable Flanged Installation: The flanged connection supports straightforward alignment and a secure connection to matching pipeline flanges.
● Broad Market Familiarity: Conventional appearance, connection and operating method help reduce the time required for product introduction and customer acceptance.
● Simplified Stock Planning: Common sizes, pressure ratings and material combinations make it easier for distributors to establish a practical local stock range.
● Flexible Branding Options: Suitable for wholesalers, distributors and OEM customers developing their own regional product offering.
This product is positioned as an economical general-purpose option. Final selection should be based on the medium, working pressure, temperature, flange standard and installation conditions.
Typical Size Range
● NPS 2″–8″
● DN50–DN200
Lever operation is generally used for small and medium sizes. Other sizes or operating methods can be discussed according to the required operating torque and application.
Pressure Rating
● PN10 / PN16
The applicable pressure rating depends on the selected body, seat, disc, stem and flange configuration.
Available Material Options
| Component | Common Material Options |
| Body | Cast iron, ductile iron or other materials upon technical confirmation |
| Disc | Ductile iron with coating, stainless steel, aluminium bronze or other suitable materials |
| Stem | Stainless steel, 17-4PH stainless steel or equivalent corrosion-resistant high-strength material |
| Seat | EPDM, NBR, silicone rubber or other elastomers compatible with the service medium |
| Handle | Ductile iron, aluminium alloy or other standard handle configurations |
Material combinations shall be selected according to the medium, working pressure, operating temperature and local market requirements. Special materials are subject to technical confirmation.
Standards
International Standards
● Design: EN 593, where specified
● Face-to-Face Dimension: EN 558 Series 13 or Series 14, according to the selected body pattern
● Inspection and Pressure Testing: EN 12266-1 / API 598, as specified
● Flange Connection: EN 1092-2 or ASME B16.5 Class 150, according to the ordered flange configuration
Chinese Standards
● Design and Manufacture: GB/T 12238-2008 — Flanged and Wafer Resilient-Seated Butterfly Valves
● Face-to-Face Dimension: GB/T 12221-2025 — Metal Valves, Face-to-Face and Related Dimensions, where applicable
● Flange Connection: GB/T 17241.1-2024 — Cast Iron Pipe Flanges, Part 1: PN Series
● Inspection and Pressure Testing: GB/T 13927-2022 — Industrial Valves, Pressure Testing
International and Chinese standards represent alternative order or project requirements and are not automatically applied simultaneously. The applicable design, face-to-face, flange and testing standards shall be stated in the purchase order. Special requirements can be discussed with the factory.
Industry Applications
● Water supply and distribution
● Building services and HVAC systems
● Drainage and wastewater pipelines
● Agricultural irrigation
● Water treatment facilities
● Pumping stations and utility water pipelines
● Fire-water auxiliary pipelines, subject to project requirements
● General industrial water systems
● Other compatible non-corrosive or mildly corrosive fluid services
Suitability for drinking water, seawater, oil, gas, chemicals, high-temperature media or fire-protection systems must be confirmed according to the selected materials and any required approvals.
Recommended Customers
● Valve distributors and wholesalers
● Importers developing competitively priced product lines
● OEM and private-label customers
● Building-services and HVAC suppliers
● Irrigation and water-system contractors
● Project suppliers serving price-sensitive tenders and routine maintenance demand
Ordering Information
For accurate selection and quotation, please provide the valve size, pressure rating, flange standard, face-to-face series, body and disc materials, stem material, seat material, medium, working pressure, operating temperature, quantity, marking and packaging requirements.
Tianjin Dingliu valve Industry Co., Ltd. is a high-tech enterprise specializing in the valve and automation industry.
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