duplex gate valve

filter strainer

filter y strainer

inline y strainer

y strainer 1 1 4

y strainer 1 2

y strainer filter

1″-2500LB LF2 Y Pattern Strainer

1″-2500LB LF2 Y Pattern Strainer

Size 1 inch (DN25)
Pressure Class Class 2500 LB (PN420 / 6000 PSI)
Body Material Low Temperature Carbon Steel – ASTM A350 LF2 Class 1
Manufacturing Process Forged Steel (Close Die Forged)
Design Standard BS 5352 / MSS SP-118 / ASME B16.34

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

  1. Basic Design Parameters

Tham số

Standard/Specification

Kích cỡ

1 inch (DN25)

Pressure Class

Class 2500 LB (PN420 / 6000 PSI)

Vật liệu thân máy

Low Temperature Carbon Steel – ASTM A350 LF2 Class 1

Manufacturing Process

Forged Steel (Close Die Forged)

Design Standard

BS 5352 / MSS SP-118 / ASME B16.34

End Connection Standard

ASME B1.20.1 (NPT) / ASME B16.11 (SW) / ASME B16.25 (BW)

Face to Face Standard

Manufacturer Standard / MSS SP-118

Test & Inspection Std.

API 598

Screen / Basket Design

Perforated or Mesh type, removable for cleaning

  1. Technical Specifications

Tham số

Details

Strainer Type

Y Pattern, Forged Steel Construction

Bonnet Type

Bolted Bonnet / Screwed Bonnet (with gasket seal)

Service Temperature

-46°C to +400°C (LF2 low temperature carbon steel)

Applicable Media

Low temperature services, Cryogenic media, Natural Gas, LPG, LNG, Propane, Ethylene, Cold services, Steam, Oil, Water

Filtration Element

Removable Stainless Steel Screen (SS304/SS316)

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)

  1. Material of Construction (LF2 Low Temperature Carbon Steel)

Part Name

Vật liệu

Standard/Grade

Thân hình

Low Temperature Carbon Steel – LF2

ASTM A350 LF2 Class 1

Bonnet / Cover

Low Temperature Carbon Steel – LF2

ASTM A350 LF2 Class 1

Screen / Filter Element

Stainless Steel

SS304 / SS316

Gasket

Stainless Steel + Flexible Graphite

SS + Graphite (low temperature suitable)

Bonnet Bolts / Studs

Low Temperature Alloy Steel

ASTM A320 L7 (for low temp service)

Bonnet Nuts

Low Temperature Alloy Steel

ASTM A194 Gr.4 / Gr.7

Drain / Blowdown Plug

Stainless Steel / LF2

Optional (if specified)

Nameplate

Stainless Steel / Aluminum

With rivets

*Note: LF2 material is specially heat treated for low temperature impact properties down to -46°C.*

  1. 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)

Kích cỡ

Pressure Class

Connection Type

L (mm)

L (in)

H (mm)

H (in)

Weight (kg)

Weight (lbs)

1″

2500LB

NPT / SW / BW

~140-170

~5.5-6.7

~100-130

~3.9-5.1

~5-8

~11-18

*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)

Connection Type

Tiêu chuẩn

Details

Threaded (NPT)

ASME B1.20.1

Tapered pipe threads, 1″ NPT Female

Socket Weld (SW)

ASME B16.11

Socket depth per standard, bore to match pipe schedule

Mối hàn đối đầu (BW)

ASME B16.25

Bevel: 37.5°, Root face: 1.6 mm

4.3 Screen Details

Tham số

Standard Value

Screen Material

SS304 / SS316

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

  1. Pressure-Temperature Rating (ASME B16.34 / Class 2500)

*Material Group: Low Temperature Carbon Steel – ASTM A350 LF2*

Temperature (°C)

Working Pressure (bar)

Working Pressure (psi)

Ghi chú

-46 to -29

420

6090

Low temperature range (impact tested)

-29 to 38

420

6090

Maximum Rating (Class 2500)

50

420

6090

 

100

395

5730

 

150

375

5440

 

200

360

5220

 

250

340

4930

 

300

320

4640

 

350

305

4425

 

400

285

4135

Max for LF2

*Note: LF2 maintains excellent impact properties down to -46°C, making it ideal for low temperature and cryogenic services.*

  1. Test Pressure (API 598)

Test Type

Medium

Pressure (bar)

Pressure (psi)

Acceptance Criteria

Shell Test (Hydrostatic)

Water

630

9135

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

Low Temperature Impact Test

N/A

N/A

N/A

Charpy V-Notch test per ASTM A370 at -46°C

  1. Flow Characteristics & Pressure Drop

Tham số

Value

Flow Coefficient Cv (approx)

~10 – 14 (typical for 1″ Y strainer)

Pressure Drop

Minimal when clean (typically < 0.2 bar at rated flow)

Screen Open Area

2-3 times pipe cross-sectional area

Recommended Flow Velocity

Water: < 2.5 m/s, Steam: < 25 m/s, Gas: < 30 m/s

  1. 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 .
  1. LF2 Material Properties

Property

Value

Minimum Design Temperature

-46°C (-50°F)

Tensile Strength (min)

485-655 MPa

Yield Strength (min)

250 MPa

Elongation (min)

22%

Charpy V-Notch Impact Test

Required at -46°C

Carbon Content (max)

0.30%

Manganese Content

0.60-1.35%

*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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