3/4"-150LB F53 Y Pattern Strainer
3/4"-150LB F53 Y Pattern Strainer - Image 2
3/4"-150LB F53 Y Pattern Strainer - Image 3
3/4"-150LB F53 Y Pattern Strainer - Image 4

3/4″-150LB F53 Y Pattern Strainer

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Description

TECHNICAL DATA SHEET

Product Name: 3/4-inch 150LB F53 Super Duplex Stainless Steel Y Pattern Strainer
Model/Specification: 3/4″-150LB-F53-Y-STRAINER-NPTF
Product Type: Y Type Strainer (Threaded)
Material: Super Duplex Stainless Steel – ASTM A182 F53 (UNS S32750)
Connection Type: NPT Female (NPT-F)

1. Basic Design Parameters

Parameter Standard/Specification
Size 3/4 inch (DN20)
Pressure Class Class 150 LB (PN20 / 290 PSI)
Body Material Super Duplex Stainless Steel – ASTM A182 F53 (UNS S32750)
Manufacturing Process Investment Casting / Close Die Forged Steel
Design Standard ASME B16.34 / BS 5352 / MSS SP-118
End Connection Standard ASME B1.20.1 (NPT Female)
Face to Face Standard Manufacturer Standard / MSS SP-118
Test & Inspection Std. API 598 / ISO 5208
Screen / Basket Design Perforated or Mesh type, removable for cleaning

2. F53 Super Duplex Material Specifications

ASTM A182 F53 (UNS S32750 / 2507) is a super duplex stainless steel with a PREN (Pitting Resistance Equivalent Number) ≥ 40, offering exceptional resistance to pitting, crevice corrosion, and chloride stress corrosion cracking in highly aggressive environments .

2.1 Chemical Composition (Weight %)

Element Cr Ni Mo N C Mn Si P S Cu
F53 24.0-26.0 6.0-8.0 3.0-5.0 0.24-0.32 0.03 max 1.20 max 0.80 max 0.035 max 0.020 max 0.50 max

2.2 Mechanical Properties

Property Value
Tensile Strength (min) 795-800 MPa (116 ksi)
Yield Strength (0.2% min) 550 MPa (80 ksi)
Elongation (min) 15-25%
Hardness (max) 290-310 HBW / 32 HRC
PREN (typical) 41-43
Microstructure 40-60% Ferrite / Austenite balanced
Maximum Service Temperature 315°C (600°F)

3. Technical Specifications

Parameter Details
Strainer Type Y Pattern, Threaded Ends
Bonnet Type Bolted Bonnet / Screwed Bonnet with Gasket Seal
Service Temperature -50°C to +315°C (F53 super duplex range)
Applicable Media Seawater, Chloride-rich brines, Sour gas (NACE), Crude oil, Chemical process fluids, Offshore production fluids
Filtration Element Removable Stainless Steel Screen (Super Duplex / SS316L)
Screen Mesh / Perforation Standard: 20 mesh (0.84 mm) / Optional: 40, 60, 80, 100 mesh or perforated
Installation Position Horizontal or Vertical (downward flow)
Pressure Direction Bidirectional (flow arrow indicates direction)
NACE Compliance NACE MR0175 / ISO 15156 for sour service

4. Material of Construction (F53 Super Duplex)

Part Name Material Standard/Grade
Body Super Duplex Stainless Steel – F53 ASTM A182 F53 (UNS S32750)
Bonnet / Cover Super Duplex Stainless Steel – F53 ASTM A182 F53 (UNS S32750)
Screen / Filter Element Super Duplex Stainless Steel / SS316L UNS S32750 / AISI 316L
Gasket Stainless Steel + Flexible Graphite Spiral Wound – Super Duplex + Graphite
Bonnet Bolts / Studs Super Duplex Stainless Steel ASTM A479 S32750 / ASTM A182 F53
Bonnet Nuts Super Duplex Stainless Steel ASTM A479 S32750
Drain / Blowdown Plug Super Duplex Stainless Steel ASTM A182 F53
Nameplate Stainless Steel SS304 / SS316

5. Main Dimensions & Connection Details

*Note: Dimensions for 3/4″ Class 150 Threaded Y Strainer with NPT Female ends. Based on MSS SP-118 and industry standards .*

5.1 End-to-End Dimensions (Face-to-Face – NPT Female)

Size Pressure Class L (mm) L (in) H (mm) H (in) Weight (kg) Weight (lbs)
3/4″ 150LB 80-100 3.15-3.94 65-85 2.56-3.35 ~1.5-2.5 ~3.3-5.5

Note: Dimensions are manufacturer dependent. Consult manufacturer for certified drawings.

5.2 NPT Female Thread Details (Per ASME B1.20.1)

Parameter 3/4″ NPT-F
Thread Size 3/4″ NPT Female
Thread Type Tapered Pipe Thread (National Pipe Taper)
Threads per Inch (TPI) 14
Thread Engagement Length (Min) 14.0 mm (0.55 in)
Pipe Thread Depth Standard NPT thread depth
Sealing Method Thread sealant or PTFE tape required during installation

5.3 Screen Details

Parameter Standard Value
Screen Material Super Duplex S32750 / SS316L
Mesh Size (Standard) 20 mesh (0.84 mm openings)
Perforation Size 0.8 mm – 1.6 mm (optional)
Open Area Ratio > 50% of pipe cross-section
Screen Removal Removable through bonnet opening

6. Pressure-Temperature Rating (ASME B16.34 / Class 150)

*Material Group: Super Duplex Stainless Steel (F53/UNS S32750)*

Temperature (°C) Working Pressure (bar) Working Pressure (psi) Notes
-50 to 38 19.6 285 Maximum Rating (Class 150)
50 19.2 278
100 17.7 257
150 16.1 234
200 14.4 209
250 12.8 186
315 ~10.0 ~145 Max temp per F53 limits

Note: F53 super duplex has excellent retention of strength at elevated temperatures within the Class 150 envelope.

7. Test Pressure (API 598)

Test Type Medium Pressure (bar) Pressure (psi) Acceptance Criteria
Shell Test (Hydrostatic) Water 29.4 426 1.5 x 38°C Rating (no visible leakage)
Seat / Screen Test Air / N2 5.5 – 7.0 80 – 100 Per API 598
Gasket Seal Test Air / N2 5.5 80 No visible leakage
Corrosion Test (Optional) Per ASTM A923 — — Ferric chloride at 50°C

8. Flow Characteristics & Pressure Drop

Parameter Value
Flow Coefficient Cv (approx) ~9 – 11 (typical for 3/4″ threaded Y strainer)
Pressure Drop Minimal when clean (< 0.2 bar at rated flow)
Screen Open Area 2-3 times pipe cross-sectional area
Recommended Flow Velocity Water: < 2.5 m/s, Gas: < 30 m/s

9. F53 Super Duplex Advantages for This Strainer

Feature Benefit
High PREN (≥40) Superior resistance to pitting and crevice corrosion in chloride environments
High Yield Strength (550 MPa) Allows thinner walls or higher safety margins
NACE MR0175 Compliance Suitable for sour service (H₂S environments)
Excellent Seawater Resistance Critical pitting temperature 55-70°C vs 35-45°C for 2205
Bidirectional Strength Balanced duplex microstructure provides strength and toughness
Long Service Life Reduced corrosion rates in aggressive media

10. Features & Applications

  • Key Features:

    • Super Duplex F53 Construction: ASTM A182 F53 (UNS S32750) provides exceptional corrosion resistance in seawater, chlorides, and sour service environments .

    • NPT Female Connections: Tapered pipe threads per ASME B1.20.1 for direct connection to threaded piping systems .

    • PREN ≥ 40: Pitting Resistance Equivalent ensures superior performance in highly corrosive conditions .

    • NACE MR0175 Compliant: Certified for sour (H₂S) oil and gas service .

    • Y Pattern Design: Compact Y-shaped body minimizes pressure drop while providing effective debris removal.

    • Removable Screen: Easy maintenance without removing strainer from pipeline.

    • Bolted Bonnet: Secure seal design with high-temperature gasket (graphite) for reliable operation.

    • High Strength: Yield strength 550 MPa – significantly higher than 316/316L stainless steel .

    • Equipment Protection: Protects downstream pumps, valves, flow meters, and instrumentation.

    • Versatile Installation: Horizontal or vertical (downward flow) installation.

  • Main Applications:

    • Offshore Oil & Gas: Seawater injection systems, produced water filtration, subsea manifolds .

    • Desalination Plants: Brine handling, reverse osmosis pretreatment .

    • Chemical Processing: Hot chloride brines, ferric chloride, aggressive chemical services .

    • Sour Gas Processing: NACE MR0175 environments with H₂S .

    • Marine Systems: Seawater cooling, ballast water treatment .

    • Power Generation: FGD systems, cooling water headers .

    • Subsea Production: Wellhead flanges, manifold fittings .

    • Laboratory & Pilot Plants: Small bore corrosive fluid handling .

11. Comparison: F53 vs Standard Stainless Steels

Property F53 (Super Duplex) 316/316L (Austenitic) F51/2205 (Duplex)
PREN 41-43 24-26 34-36
Yield Strength (min) 550 MPa 210 MPa 450 MPa
Critical Pitting Temp 55-70°C 15-20°C 35-45°C
Seawater Service Up to 50°C Ambient only Ambient only
Relative Cost High Baseline Moderate

12. Installation Guidelines for NPT Connections

  1. Thread Sealant: Apply PTFE tape or thread sealant to male pipe threads before installation.

  2. Do Not Over-Tighten: Excessive torque can crack the female threads or distort the body.

  3. Wrench Flats: Use wrench flats on valve body for installation support.

  4. Flow Direction: Arrow on body must align with flow direction.

  5. Positioning: Ensure bonnet/cover is accessible for screen cleaning.

  6. Support: Heavy piping may require additional support to avoid strain on threads.

13. Ordering Information

Please specify when ordering:

  1. Valve size: 3/4″ (DN20)

  2. Pressure class: 150LB

  3. Body material: ASTM A182 F53 (Super Duplex / UNS S32750)

  4. End connections: NPT Female (NPT-F)

  5. Screen material: Super Duplex / SS316L

  6. Screen type: Mesh (specify mesh size) / Perforated (specify hole size)

  7. Standard mesh: 20 mesh (default)

  8. Bonnet type: Bolted / Screwed

  9. Special requirements: NACE MR0175 certification, PMI testing, ferrite content verification

  10. Certifications: Material Test Reports (EN 10204 3.1/3.2), NACE certificates

*Disclaimer: The above data is prepared based on common industry standards (ASME B16.34, API 598, ASTM A182, MSS SP-118) for F53 super duplex Y strainers with NPT female connections . F53 (UNS S32750) is a premium super duplex stainless steel requiring specialized welding and handling procedures . NPT threads provide a reliable tapered pipe thread seal when properly installed with appropriate sealant. Specific dimensions may vary by manufacturer. The final technical agreement and certified drawings shall prevail.*

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