Single Door SS304 Disc: Fig 302

Key Specifications & Features

• • “Single Door” indicates a single-disc check valve as opposed to a “double door” (dual-plate) style.

  • “SS304 Disc” means the disc (the moving part that blocks reverse flow) is made of stainless steel grade 304. That’s good for corrosion resistance.

  • “Wafer type” (if matches similar models) means the valve has a compact body and fits between two flanges (sandwich style) rather than being fully flanged with its own flanges.

  • The body may be cast iron, ductile iron, or possibly stainless steel depending on the specification; one would need to confirm for the exact model.

• Typical/Expected Features & Benefits

  Based on general industry practice for single-disc wafer check valves and what the manufacturer lists:

  • Compact length / wafer style: less space required than full flanged check valves. (See installation distances in Sanspar literature) EngNet South Africa+1

  • Quick closing: Single disc can respond fairly quickly to flow reversal, helping reduce back-flow and potential water hammer.

  • SS304 disc: Good corrosion resistance, suitable for many water/industrial fluids.

  • Installation options: Likely usable in horizontal and possibly vertical pipelines (depending on model) — though orientation should be confirmed.

  • Straight-through flow path: Wafer style and single disc gives low head loss (relatively) compared to bulkier check valves—good for maintaining flow efficiency.