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- Wafer-Type Half Rubber-Lined Double Disc Check Valve
Wafer-Type Half Rubber-Lined Double Disc Check Valve
ET VALVE’s Wafer-Type Half Rubber-Lined Double Disc Check Valve is engineered for one-way liquid flow control, combining a space-saving footprint with a fast-acting response. The spring-assisted dual discs close instantly upon flow reversal, effectively softening the impact and pressure surges that typically follow pump trips or unexpected shutdowns. Its body adopts a selective lining approach—rubber or elastomer is applied only to the internal sealing faces, while the exterior casing remains painted and unlined. This targeted design secures reliable sealing and abrasion resistance right at the critical contact zones, and at the same time keeps the unlined outer structure from driving up production costs. For applications that do not demand full-body encapsulation, this solution offers a sound balance between performance and economy.
- Rapid, Silent Closure: Eliminating Water Hammer and Back-flow
- Partial rubber encapsulation for precise sealing control
- Ultra-Slim Profile – Saves You Valuable Space and Weight
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Rapid, Silent Closure: Eliminating Water Hammer and Back-flow
A high-performance internal spring-assist mechanism, combined with a lightweight dual-disc design, enables ultra-fast valve response. The moment the medium flow velocity drops to zero, the discs execute a precise and rapid closure, effectively halting back-flow. This "early closure" mechanism completely eliminates the water hammer effect caused by the impact of significant back-flow, drastically reducing system vibration and noise while ensuring the operational safety of the piping system and downstream pump and valve equipment.
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Partial rubber encapsulation for precise sealing control
For standard, stable operating conditions, a high-quality partial rubber encapsulation process is applied to the valve's core contact zones and sealing flow surfaces. These areas are subject to the highest stress and carry the greatest risk of leakage during flow reversal; by precisely applying the rubber lining here, we ensure a tighter seal the moment the valve closes. This design delivers firm compression, accurate resilience, and long-lasting durability, achieving precise sealing while significantly extending the valve's overall service life. Compared to full rubber lining, the partial encapsulation structure offers superior sealing performance while providing better cost-effectiveness and ease of maintenance.
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Ultra-Slim Profile – Saves You Valuable Space and Weight
This valve uses a short wafer-style body that keeps overall dimensions and weight to a minimum – far less than conventional lift or swing check valves. The compact footprint does two practical things for you: it reduces the space you need to allocate in your piping layout, and it cuts down the load on pipe hangers and structural supports. So whether you're working in a tight equipment bay, mounting on a skid, or retrofitting an old pipeline, installation becomes faster, simpler, and more economical – no major structural changes required.
| Product Specifications (Wafer-Type Half Rubber-Lined Double Disc Check Valve) |
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| DN | DN50-DN600 | Working Temperature | -20℃~110℃ -20℃~100℃ -20℃~200℃ |
| Working Pressure | PN6 PN10 PN16 | Disc Material | SS304、SS316、 Aluminum bronze、Nylon Disc、Ductile iron、2205、2507、1.4529 |
| Seal Material | EPDM, NBR, VITON | Media | Water、 Oil、Gas |
| Body Material | Ductile iron、WCB | Connection Standards | PN10 / PN16 / 150LB |
| Application | Water treatment, Municipal engineering | ||
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