TECHNICAL DATA SHEET
Product Name: 1-inch 2500LB LF2 Low Temperature Carbon Steel Y Pattern Strainer
Model/Specification: 1″-2500LB-LF2-Y-STRAINER
Product Type: Y Type Strainer (Forged)
Connection Type: Threaded (NPT) / Socket Weld (SW) / Butt Weld (BW) User specified
- Basic Design Parameters
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Parametr
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Standard/Specification
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Ölçü
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1 inch (DN25)
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Pressure Class
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Class 2500 LB (PN420 / 6000 PSI)
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Bədən materialı
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Low Temperature Carbon Steel – ASTM A350 LF2 Class 1
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Manufacturing Process
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Forged Steel (Close Die Forged)
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Design Standard
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BS 5352 / MSS SP-118 / ASME B16.34
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End Connection Standard
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ASME B1.20.1 (NPT) / ASME B16.11 (SW) / ASME B16.25 (BW)
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Face to Face Standard
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Manufacturer Standard / MSS SP-118
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Test & Inspection Std.
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API 598
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Screen / Basket Design
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Perforated or Mesh type, removable for cleaning
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- Technical Specifications
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Parametr
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Details
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Strainer Type
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Y Pattern, Forged Steel Construction
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Bonnet Type
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Bolted Bonnet / Screwed Bonnet (with gasket seal)
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Service Temperature
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-46°C to +400°C (LF2 low temperature carbon steel)
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Applicable Media
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Low temperature services, Cryogenic media, Natural Gas, LPG, LNG, Propane, Ethylene, Cold services, Steam, Oil, Water
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Filtration Element
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Removable Stainless Steel Screen (SS304/SS316)
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Screen Mesh / Perforation
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Standard: 20 mesh (0.84 mm) / Optional: 40, 60, 80, 100 mesh or perforated
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Installation Position
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Horizontal or Vertical (downward flow)
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Pressure Direction
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Bidirectional (flow arrow indicates direction)
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- Material of Construction (LF2 Low Temperature Carbon Steel)
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Part Name
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Material
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Standard/Grade
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Bədən
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Low Temperature Carbon Steel – LF2
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ASTM A350 LF2 Class 1
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Bonnet / Cover
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Low Temperature Carbon Steel – LF2
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ASTM A350 LF2 Class 1
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Screen / Filter Element
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Stainless Steel
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SS304 / SS316
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Gasket
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Stainless Steel + Flexible Graphite
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SS + Graphite (low temperature suitable)
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Bonnet Bolts / Studs
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Low Temperature Alloy Steel
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ASTM A320 L7 (for low temp service)
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Bonnet Nuts
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Low Temperature Alloy Steel
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ASTM A194 Gr.4 / Gr.7
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Drain / Blowdown Plug
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Stainless Steel / LF2
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Optional (if specified)
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|
Nameplate
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Stainless Steel / Aluminum
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With rivets
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*Note: LF2 material is specially heat treated for low temperature impact properties down to -46°C.*
- Main Dimensions & Connection Details
Note: Dimensions are for 1″ Forged Y Strainer Class 2500. Values are based on industry standards and may vary by manufacturer.
4.1 End-to-End Dimensions (Face-to-Face)
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Ölçü
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Pressure Class
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Connection Type
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L (mm)
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L (in)
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H (mm)
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H (in)
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Weight (kg)
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Weight (lbs)
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1″
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2500LB
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NPT / SW / BW
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~140-170
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~5.5-6.7
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~100-130
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~3.9-5.1
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~5-8
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~11-18
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*Note: For comparison, 1″ Class 1500 strainers have L=111mm, H=100mm . Class 2500 will have heavier wall thickness and larger dimensions.*
4.2 End Preparation Details (Per ASME Standards)
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Connection Type
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Standart
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Details
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Threaded (NPT)
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ASME B1.20.1
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Tapered pipe threads, 1″ NPT Female
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Socket Weld (SW)
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ASME B16.11
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Socket depth per standard, bore to match pipe schedule
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Butt Weld (BW)
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ASME B16.25
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Bevel: 37.5°, Root face: 1.6 mm
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4.3 Screen Details
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Parametr
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Standard Value
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Screen Material
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SS304 / SS316
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Mesh Size (Standard)
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20 mesh (0.84 mm openings)
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Perforation Size
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0.8 mm – 1.6 mm (optional)
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Open Area Ratio
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> 50% of pipe cross-section
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Screen Removal
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Removable through bonnet opening
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- Pressure-Temperature Rating (ASME B16.34 / Class 2500)
*Material Group: Low Temperature Carbon Steel – ASTM A350 LF2*
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Temperature (°C)
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Working Pressure (bar)
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Working Pressure (psi)
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Notes
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-46 to -29
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420
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6090
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Low temperature range (impact tested)
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-29 to 38
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420
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6090
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Maximum Rating (Class 2500)
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50
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420
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6090
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|
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100
|
395
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5730
|
|
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150
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375
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5440
|
|
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200
|
360
|
5220
|
|
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250
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340
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4930
|
|
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300
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320
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4640
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|
|
350
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305
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4425
|
|
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400
|
285
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4135
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Max for LF2
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*Note: LF2 maintains excellent impact properties down to -46°C, making it ideal for low temperature and cryogenic services.*
- Test Pressure (API 598)
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Test Type
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Medium
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Pressure (bar)
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Pressure (psi)
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Acceptance Criteria
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|
Shell Test (Hydrostatic)
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Water
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630
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9135
|
1.5 x 38°C Rating (no visible leakage)
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|
Seat / Screen Test
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Air / N2
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5.5 – 7.0
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80 – 100
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Per API 598
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Gasket Seal Test
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Air / N2
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5.5
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80
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No visible leakage
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Low Temperature Impact Test
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N/A
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N/A
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N/A
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Charpy V-Notch test per ASTM A370 at -46°C
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- Flow Characteristics & Pressure Drop
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Parametr
|
Value
|
|
Flow Coefficient Cv (approx)
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~10 – 14 (typical for 1″ Y strainer)
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Pressure Drop
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Minimal when clean (typically < 0.2 bar at rated flow)
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Screen Open Area
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2-3 times pipe cross-sectional area
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Recommended Flow Velocity
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Water: < 2.5 m/s, Steam: < 25 m/s, Gas: < 30 m/s
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- Features & Applications
- Key Features:
- Low Temperature Service Capability (-46°C): ASTM A350 LF2 material is specially heat treated and impact tested for reliable performance in low temperature environments down to -46°C .
- High Pressure Rating (2500LB): Designed for extreme high-pressure applications up to 420 bar (6000 PSI) .
- Forged Body: Forged construction ensures superior strength, grain structure integrity, and freedom from porosity, critical for high-pressure Class 2500 applications .
- Y Pattern Design: Compact Y-shaped body minimizes pressure drop while providing effective debris removal .
- Removable Stainless Steel Screen: Easy maintenance – screen can be removed for cleaning without removing the strainer from the pipeline .
- Low Temperature Bolting: ASTM A320 L7 bolting ensures proper strength and impact properties at low temperatures .
- Multiple End Options: Available in NPT threaded, socket weld, or butt weld connections to suit various piping specifications .
- Equipment Protection: Protects downstream equipment such as control valves, pumps, and flow meters from damaging debris .
- Versatile Installation: Can be installed in horizontal or vertical (downward flow) pipelines .
- Customizable Filtration: Standard 20 mesh screen with optional finer meshes (40, 60, 80, 100) or perforated screens available based on application requirements .
- Main Applications:
- LNG & Cryogenic Plants: Low temperature natural gas handling, liquefaction, and storage facilities .
- LPG / Propane Services: Storage and transfer of liquefied petroleum gases .
- Ethylene & Ethane Processing: Low temperature hydrocarbon processing .
- Cold Climate Installations: Pipelines and facilities in arctic or cold regions .
- Refrigeration Systems: Industrial refrigeration and cold storage .
- Petrochemical Plants: Low temperature process streams .
- Gas Processing Plants: Natural gas treatment and conditioning .
- Upstream of Critical Equipment: Installed before control valves, flow meters, and pumps in low temperature services .
- LF2 Material Properties
|
Property
|
Value
|
|
Minimum Design Temperature
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-46°C (-50°F)
|
|
Tensile Strength (min)
|
485-655 MPa
|
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Yield Strength (min)
|
250 MPa
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Elongation (min)
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22%
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Charpy V-Notch Impact Test
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Required at -46°C
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Carbon Content (max)
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0.30%
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Manganese Content
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0.60-1.35%
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*Disclaimer: The above data is prepared based on common industry standards (BS 5352, MSS SP-118, ASME B16.34) for forged low temperature carbon steel Y strainers . Specific dimensions, materials, and pressure ratings may vary by manufacturer. LF2 material is specially suited for low temperature service down to -46°C with impact testing per ASTM A370. The final technical agreement and certified drawings shall prevail.*
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