D343H-16C Cast Steel Hard Seal Flange Butterfly Valve
 | D343H-16C Cast Steel Hard Seal Flange Butterfly Valve
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D343H-16C Cast Steel Hard Seal Flange Butterfly Valve：
🔹 Product Overview
Our D343H-16C Triple Eccentric Metal Hard Seal Butterfly Valve (cast steel WCB body) is engineered for zero-leakage shut-off and reliable flow regulation in demanding industrial systems. Designed to meet GB standards, this PN16-rated flange butterfly valve delivers exceptional durability and performance across water, steam, gas, oil, and corrosive media.
🔹 Core Functional Features
✅ Triple Eccentric Hard Seal Structure
The offset disc design eliminates friction between the butterfly plate and seat during operation, enabling "tightening with use" sealing performance. Achieves bubble-tight shut-off (zero leakage) under rated pressure, even after thousands of cycles.
✅ High-Temperature & High-Pressure ResistanceCast steel (WCB) body construction withstands up to 1.6MPa pressure and high operating temperatures, making it ideal for steam, thermal oil, and other high-heat media applications.
✅ Durable Metal-to-Metal Seating
Stainless steel sealing ring and precision-machined disc ensure wear resistance, corrosion protection, and long service life. Unlike soft-seal alternatives, this hard seal design resists degradation in harsh environments.
✅ Low Operating Torque & Self-Locking Function
Gear-operated mechanism reduces opening/closing force, while the self-locking feature prevents accidental disc movement, ensuring stable operation in pipeline systems.
✅ Flange Connection (GB/T 9113 Compliant)
tandard flange end design ensures easy installation, compatibility with existing piping systems, and uniform sealing performance.
🔹 Key Specifications
| Parameter | Details |
|---|---|
| Model | D343H-16C |
| Pressure Rating | PN16 (1.6MPa) |
| Body Material | Cast Carbon Steel (WCB) |
| Seal Material | Stainless Steel + Alloy Hard Seal |
| Operation Type | Gear Worm Actuator |
| Connection Standard | GB/T 9113 (Flange) |
| Test Standard | GB/T 13927 (Leakage & Pressure Test) |
| Applicable Media | Water, Steam, Gas, Oil, Weakly Corrosive Fluids |
• Factory Direct Sales: No middleman markup, competitive pricing with full quality control.
• Full Range of Sizes: DN50 to DN1000 available to meet diverse project requirements.
• Fast & Nationwide Shipping: Global delivery with reliable logistics partners.
Upgrade your pipeline reliability with our D343H-16C Hard Seal Butterfly Valve – engineered for performance, built to last.
