Beschreibung
TECHNICAL DATA SHEET
Double Plate Wafer Check Valve
- General Information
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Item
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Spezifikation
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Ventiltyp
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Double Plate Wafer Check Valve (Dual Plate Check Valve)
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Nenngröße
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DN300 (12 inch)
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Druckbewertung
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150 LB (Class 150)
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End Connection
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Wafer Type (Fits between ASME B16.5 Flanges)
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Design Structure
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Dual Plate / Non-Slam
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Medium
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Water, Oil, Gas, and Mild corrosive media
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Operating Temp.
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-20°C to +120°C (-4°F to 248°F)
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- Bill of Materials (Materials of Construction)
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Part Name
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Material
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Material Standard (ASTM/DIN)
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Körper
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Sphäroguss
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ASTM A536 (60-40-18) / DIN GGG-50
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Disc (Plate) (x2)
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Aluminum Bronze
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ASTM B148 (C95800 / C95400) / BS 1400 AB2
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Shaft / Pin
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Stainless Steel
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AISI 304 or AISI 316
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Seat (Seal)
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EPDM (Ethylene Propylene Diene Monomer)
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Excellent resistance to hot water, steam, and dilute acids
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Frühling
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Stainless Steel
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AISI 301 or AISI 316
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- Technical Specifications & Performance
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Item
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Spezifikation
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Design Standard
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API 594, API 6D, EN 593, BS 5153
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Face to Face Dimension
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ASME B16.10 / API 594 (Short/Compact pattern)
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Flange Drilling Standard
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ASME B16.5 (Class 150)
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Pressure Test Standard
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API 598
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Shell Hydrostatic Test
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3.0 MPa (435 psi)
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Seal Hydrostatic Test
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2.2 MPa (319 psi)
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Low Pressure Air Test
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0.6 MPa (87 psi)
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Installation Position
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Horizontal or Vertical (Flow direction upward)
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Flow Direction
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Arrow cast on body (Flow –>)
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- Dimensional Data (Approximate)
Note: Wafer check valves have a short face-to-face length. The exact “L” dimension can vary slightly by manufacturer. Please verify the final dimension with the approved drawing.
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Größe
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Face-to-Face Length (L)
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Body Outside Diameter (D)
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Flange Bolt Circle Dia. (D1)
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No. of Bolt Holes & Dia.
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DN300 (12″)
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73 mm – 83 mm (Typical: 79 mm)
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Approx. 340 mm
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451 mm (ASME B16.5 150LB)
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12 – 25 mm (Φ25)
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Important Installation Note:
Ensure the pipeline flanges spread apart to insert this valve. The bolts are long-pass bolts that go through the entire valve body.
- Product Features
- Compact & Lightweight: The wafer body design significantly reduces weight and installation space compared to traditional swing check valves.
- Low Pressure Drop: Streamlined disc design minimizes flow resistance.
- Corrosion Resistance: Der Aluminum Bronze disc offers superior resistance to corrosion from seawater, chlorides, and various acidic media, making it ideal for harsh environments.
- Tight Shut-Off: The combination of a metal disc and an EPDM resilient seat provides bubble-tight sealing.
- Non-Slam Performance: Stainless steel springs ensure quick closing of the plates before flow reversal, effectively preventing water hammer.
- Inspection & Warranty
- Valves are pressure tested in accordance with API 598.
- Marking per MSS SP-25.
- Free from porosity and structural defects.
If you need to adjust this sheet:
- Change the seat material (e.g., to Viton® or PTFE).
- Update specific face-to-face dimensions if provided by the manufacturer.
- Add torque values or actuator data.
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