Product Description: Stainless Steel Wafer Type Check Valve – 10″

The Stainless Steel Wafer Type Check Valve in a 10‑inch size is engineered to provide reliable, maintenance‑free prevention of reverse flow in a wide range of industrial piping systems. Crafted from premium-grade stainless steel, this wafer-style non‑return valve offers outstanding corrosion resistance, exceptional strength, and consistent performance under demanding process conditions. Its compact, lightweight design allows seamless installation between standard ANSI and DIN flanges, making it a versatile solution for water treatment, chemical processing, oil & gas, power generation, and marine applications.

Key Features & Benefits

  • Premium Material Construction:
    The body and internal components are made of 316-grade stainless steel, ensuring superior resistance to corrosion, high temperatures (up to 450 °F/232 °C), and chemical attack. This durable construction minimizes the risk of pitting or scaling, extending the valve’s service life even in aggressive media.

  • Wafer‑Style, Space‑Saving Design:
    The wafer profile sits snugly between mating flanges without requiring additional supporting lugs or bulky housings. At just 2–3 inches thick, the valve’s slim design significantly reduces overall pipeline footprint and weight, simplifying retrofits and new installations alike.

  • Low Cracking Pressure & Smooth Flow:
    Engineered with a light‑weight, precision‑balanced disc, the valve requires minimal differential pressure (as low as 0.1 bar) to open. Once open, the streamlined disc geometry ensures an unobstructed flow path, resulting in low pressure drop and energy‑efficient operation.

  • Tight Shut‑Off & Positive Sealing:
    The elastomeric seat (PTFE or EPDM, selectable to suit fluid compatibility) forms a resilient seal around the disc edge, preventing backflow and leakage even under fluctuating pressure conditions. The resilient seat also dampens disc closure, reducing water hammer and hydraulic shock.

  • Versatile Actuation Options:
    While designed for automatic operation (gravity or spring‑assisted), optional spring‑assist mechanisms can be supplied for installations with low flow rates or horizontal piping. The spring‑loaded version guarantees rapid disc closure, enhancing protection against reverse flow surges.

  • Ease of Maintenance:
    With a wafer‑style body, these check valves can be removed from the line without disturbing adjacent piping. Internals are accessible simply by removing the bonnet and disc assembly, enabling quick inspection, cleaning, or part replacement without specialized tools.

Technical Specifications

AttributeDetails
Valve Size10 inch (DN250)
Pressure RatingPN16 / ANSI Class 150
Body MaterialStainless Steel ASTM A351 CF8M (316 Grade)
Disc MaterialStainless Steel ASTM A351 CF8M
Seat MaterialPTFE (Standard) / EPDM (Optional)
End ConnectionsWafer‑style for ANSI / DIN flanges
Temperature Range–20 °C to +232 °C (–4 °F to +450 °F)
Flow DirectionUni‑directional
Cracking Pressure0.1 bar (1.5 psi)
Face‑to‑Face LengthEN 588‑1 (DIN 3202)
Testing StandardsAPI 598 / EN 12266
Applicable MediaWater, oil, gas, steam, chemicals, slurries

Typical Applications

  1. Water & Wastewater Treatment:
    Prevents backflow in pumps, filters, and distribution mains, safeguarding equipment and maintaining process integrity in municipal and industrial water systems.

  2. Oil & Gas Processing:
    Protects compressors, pipelines, and wellhead assemblies from reverse flow, ensuring safe, uninterrupted operation in both onshore and offshore installations.

  3. Chemical & Petrochemical Plants:
    Compatible with a variety of corrosive media, these valves reliably block backflow in reactor feed lines, solvent recovery units, and storage tank manifolds.

  4. Power Generation & Steam Systems:
    Used in feedwater lines, condensate return circuits, and boiler blowdown systems to prevent reverse surges and preserve turbine efficiency.

  5. Marine & Offshore:
    Ideal for ballast, bilge, and cooling water applications where compact, corrosion‑resistant valves are mandatory for space‑constrained vessels and platforms.

Installation & Maintenance Guidelines

  1. Orientation & Flow Direction:
    Ensure the arrow cast on the valve body aligns with the direction of fluid flow. Horizontal or vertical installation is permissible, but spring‑assisted models are recommended for low‑flow or horizontal service to guarantee positive closure.

  2. Flange Compatibility:
    Confirm flange drilling matches ANSI B16.5 or DIN PN16 standards. Tighten flange bolts evenly in a star pattern to prevent misalignment.

  3. Routine Inspection:
    Schedule periodic visual checks for external damage or leaks. Internally inspect the disc and seat every 12 months or per process requirements; replace the seat or disc if excessive wear is detected.

  4. Cleaning Procedures:
    In applications with particulate or slurry media, clean internal components during maintenance to prevent debris buildup that could impede disc movement.

  5. Spare Parts & Support:
    Genuine spare discs, seats, and springs are available from the manufacturer. Our technical team provides full support for valve sizing, installation advice, and aftermarket services.


With its robust 316 stainless steel construction, wafer‑style form factor, and precision‑engineered internals, the 10‑inch Stainless Steel Wafer Type Check Valve delivers dependable, leak‑free performance across diverse industrial sectors. Whether you’re safeguarding pumps in a water treatment plant or preventing backflow in a chemical processing line, this valve offers the reliability, efficiency, and long service life that modern operations demand.

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