30" 600LB Swing Check Valve
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30″ 600LB Swing Check Valve

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Description

TECHNICAL DATA SHEET

PRODUCT: SWING CHECK VALVE, FLANGED ENDS, API 6D

1. VALVE DESCRIPTION:

  • Type: Swing Check Valve (Non-Return Valve)

  • Operation: Automatic (Flow Dependent)

  • Design Standard: API 6D (Latest Edition)

  • Pressure-Temperature Ratings: ASME B16.34 / API 6D

  • Fire Safe Design: API 607 / API 6FA (Standard per API 6D)

  • Anti-Static Design: API 6D

  • Body/Bonnet Connection: Bolted Bonnet (ASME B16.5 / ASME B16.47 Series A Raised Face)

  • Seat Design: Renewable Seat Ring

2. SIZE AND PRESSURE RATING:

  • Nominal Pipe Size (NPS): 30 Inch

  • Pressure Class: ASME 600 LB (PN 100)

3. END CONNECTIONS:

  • Type: Raised Face Flanges

  • Standard: ASME B16.47 Series A (or ASME B16.5 for NPS 24 and below, confirm applicability for NPS 30)

  • Facing: ASME B16.5 / B16.47 RF (Raised Face)

  • Drillings: ASME B16.5 / B16.47 Series A, 600 LB

4. DESIGN FEATURES:

  • Body Construction: Single Piece Body (Integral Seat Ring Pocket)

  • Bonnet: Bolted Type (Standard Bolted Bonnet)

  • Disc: Swing Disc (Single Disc), Hinged Design

  • Seat Ring: Removable and Renewable

  • Backstop: Integral or Attached (Prevents over-opening)

  • Gasket: Spiral Wound (SS / Graphite Filler) or Ring Type Joint (RTJ) if specified. (Default typically SWG for RF).

  • Bolting: ASTM A193 Gr B7 Studs / ASTM A194 Gr 2H Nuts (Standard)

5. MATERIALS OF CONSTRUCTION:

  • Body & Bonnet: ASTM A216 Gr. WCB (Carbon Steel)

  • Disc (Closure Member): ASTM A216 Gr. WCB Overlaid with Stellite 6 (Hardfaced Sealing Surface)

  • Seat Ring: ASTM A217 Gr. CA15 (13% Cr Steel) Overlaid with Stellite 6 (Hardfaced Sealing Surface)

  • Disc Arm / Hinge Pin: ASTM A182 Gr. F6a (410 SS) or similar corrosion-resistant alloy.

  • Hinge Bushing: Self-Lubricating Bushing (e.g., Graphoil-impregnated) or Hardened Stainless Steel.

  • Body Seat (Seat Pocket): Machined directly into WCB body or optionally weld-overlaid for erosion resistance if required.

  • Gasket: Spiral Wound – SS 316 Filler / Flexible Graphite Filler, SS Inner/Outer Rings (Standard for RF).

  • Bolting (Studs & Nuts): ASTM A193 Gr. B7 / ASTM A194 Gr. 2H

  • Backstop: ASTM A216 Gr. WCB

6. SEATINGS:

  • Sealing Surface Disc: Stellite 6 Overlay (Ground Finish)

  • Sealing Surface Seat Ring: Stellite 6 Overlay (Ground Finish)

  • Leakage Class (Seat): API 598 / API 6D (Typically Class IV or VI achievable with Stellite). API 6D Table 45 (A or B) applies.

7. PRESSURE TESTING:

  • Standard: API 598 / API 6D

  • Shell Test Pressure: 1.5 x Class Rating (900 PSI / 62 bar g)

  • Seat Test Pressure: 1.1 x Class Rating (660 PSI / 45.5 bar g)

  • Test Medium: Water (Shell) / Water or Air (Seat)

8. SURFACE TREATMENT:

  • External: Blast Cleaned (Sa 2.5) and Coated with Shop Primer (Epoxy or Alkyd)

  • Internal (Bore): Cleaned per NACE MR0175/ISO 15156 if required for service, otherwise standard cleaning. Stellite surfaces protected.

  • Machined Surfaces (Flanges): Coated with easily removable rust preventative.

9. DIMENSIONS & WEIGHT:

  • Face-to-Face: API 6D (Table 8) or ASME B16.10 (Confirm for Swing Check). [Note: Specific dimension needs referencing standard tables]

  • End Flange Dimensions: ASME B16.5 / ASME B16.47 Series A, 600 LB

  • Approx. Weight: *[To be determined by manufacturer based on design, but significant due to size – e.g., 4000-6000 kg range estimate]*

10. MARKING:

  • Standard: Per API 6D (Section 9) & MSS-SP-25.

  • Includes: Manufacturer ID, Size, Pressure Class, Material Designation (e.g., WCB), Heat No., Serial No., API 6D Monogram (if licensed), Direction of Flow Arrow, “CR” for Check Valve.

11. PACKING:

  • Standard: Wooden Export Crate, internally protected with VCI (Vapor Corrosion Inhibitor) paper or desiccant bags. Flanges covered with protective covers.

12. OPTIONS (Not Included as Standard per Spec):

  • Extended Bonnet (For insulation or high-temp)

  • Special Coatings (Internal Epoxy, External FBE, Galvanizing)

  • Cryogenic Service Design / Materials

  • Locking Device

  • Position Indicator

  • Lifting Lugs (Highly Recommended for this size/weight)

  • RTJ Flange Facings

  • NACE MR0175/ISO 15156 Compliance Documentation

  • PMI (Positive Material Identification)

  • NDE (Radiography, UT, DPT, MPI) per specified acceptance criteria.

Important Notes for User/Procurement:

  1. Dimensions & Weight: The face-to-face dimension and weight provided are estimates based on standards and typical designs. The manufacturer’s specific design will determine the final values. Always confirm with the supplier.

  2. Flange Standard: For NPS 30, ASME B16.47 Series A is typical, but confirm applicability and ensure it matches the connecting piping.

  3. Stellite Grade: “Stellite” typically implies Stellite 6 (CoCrA alloy) for valve trim hardfacing. Confirm the exact grade with the manufacturer if critical.

  4. Seat Leakage: API 6D has specific seat leakage criteria (Table 45, usually Option A or B). API 598 Class IV or VI is often achievable with Stellite seats, but state the required class if critical.

  5. Manufacturer: This TDS describes a valve meeting the specified requirements. Actual performance and features depend on the specific manufacturer’s qualified design. Ensure the chosen manufacturer is API 6D monogram licensed.

  6. Options: Review the options list carefully. Features like lifting lugs are practically essential for handling a valve of this size and weight.

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