China Double Doors C594 Disc One Way Valve DN300 12INCH Factory, Exporter
Product Description
Wafer Style Connection: Designed to install seamlessly between ANSI Class 125/150 companion flanges (or equivalent).
Dual Door / Dual Disc: Two independent plates, spring-loaded or torsion-hinged for rapid non-slam closing response.
Durable Body Material: High-grade Ductile Iron construction (ASTM A536 grade 65-45-12 standard).
Corrosion-Resistant Disc: Aluminum Bronze (C954) discs ensure outstanding corrosion resistance and mechanical longevity.
Tight Resilient Sealing: Elastomeric soft-seat options (EPDM, NBR, etc.) offer bubble-tight shutoff with minimal leakage.
Compact & Efficient: Short face-to-face length facilitates effortless installation in restricted pipe runs with low pressure drop.
Flexible Orientation: Qualified for horizontal and vertical installations (check orientation requirements with manufacturer specs).
Versatile Media Handling: Suitable for potable water, chilled water, HVAC systems, and non-slurry industrial fluid lines.
| Size, Pressure Rating & Standard | |
|---|---|
| Size Range | DN50 – DN800 (2" – 32") |
| Pressure Rating | PN6, PN10, PN16, Class 150 |
| Face to Face STD | API 609, BS 5155, DIN 3202, ISO 5752 |
| Connection STD | PN6, PN10, PN16, DIN 2501 PN6/10/16, BS 5155 |
| Material Specifications | |
| Body | Cast Iron (GG25), Ductile Iron (GGG40/50), Carbon Steel (WCB A216), Stainless Steel (SS304/SS316/SS304L/SS316L), Duplex Stainless Steel (2507/1.4529), Bronze, Aluminium Alloy |
| Disc | DI+Ni, Carbon Steel (WCB A216), Stainless Steel (SS304/SS316/SS304L/SS316L), Duplex Stainless Steel (2507/1.4529), Bronze, DI/WCB/SS coated with Epoxy Painting/Nylon/EPDM/NBR/PTFE/PFA |
| Stem / Shaft | SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel |
| Seat | NBR, EPDM / REPDM, PTFE / RPTFE, Viton, Neoprene, Hypalon, Silicon, PFA |
This valve is optimized for potable water, chilled water, HVAC systems, cooling towers, and non-slurry industrial liquid processes where backflow prevention with low pressure drop is essential.
The product is manufactured across nominal sizes from DN50 up to DN800 (2 inches to 32 inches), with standard pressure ratings covering PN6, PN10, PN16, and ANSI Class 150.
Yes, thanks to its spring-loaded dual disc design, the valve can be installed in horizontal piping as well as vertical upward flow pipelines. Always consult technical orientation guidelines for specific system layouts.
Discs can be supplied in Aluminum Bronze (C954), Stainless Steel (304/316/Duplex), Carbon Steel, or coated Ductile Iron. Elastomeric seat options include NBR, EPDM/REPDM, Viton, PTFE, Neoprene, Hypalon, and Silicon to match specific chemical and temperature demands.
Face-to-face dimensions conform to API 609, BS 5155, DIN 3202, and ISO 5752, ensuring universal compatibility between ANSI Class 125/150, DIN 2501, and BS 5155 flanges.
The dual door design offers a significantly shorter face-to-face dimension, lighter weight, reduced water hammer effects via spring-assisted quick closing, and improved hydrodynamic efficiency with lower pressure loss.
