Industrial Y Strainer

Standard Series vs Custom Engineering Capability

Standard Series

Pressure Class: ANSI Class 150 / 300 / 600 (Flanged)

Design Standard: ASME B16.34

Flange Standard: ASME B16.5 (up to NPS 24) / ASME B16.47 (for larger sizes upon request)

Test / Inspection: API 598

Typical Materials: WCB / CF8 / CF8M

Temperature Range: Depends on material and service conditions (to be confirmed during quotation).

Construction: Y Pattern, Bolted Bonnet, Removable Perforated or Mesh-Lined Screen

Installation: Horizontal (screen leg down is recommended). Vertical installation is possible but must be confirmed based on flow direction and debris behavior to ensure debris collects properly in the leg and does not re-enter the pipeline.

If vertical installation is required, please confirm flow direction and service debris characteristics with our engineering team before installation.

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Engineered / Custom Options

Larger sizes up to NPS 32

Special alloys (Duplex, Super Duplex, chrome-moly, etc.)

Blow-off connection for in-line cleaning

Differential pressure (DP) tapping ports

Custom end connections (Butt Weld, Threaded, etc.)

For pricing and technical confirmation, Request a Quote.
For detailed dimensions and material data, Download the Y Strainer Catalogue (PDF).

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Y Strainer vs Basket Strainer vs T-Type Strainer

Feature	Y Strainer	Basket Strainer	T-Type Strainer
Installation Footprint	Compact, inline	Larger, top-entry	Straight-through layout
Dirt-Holding Capacity	Low–Medium	High	Medium
Cleaning Frequency	More frequent	Less frequent	Moderate
Typical Application	Steam, high-pressure lines, space-limited systems	High flow, high debris load	Straight piping configurations
Orientation	Horizontal (leg down) / Vertical (subject to confirmation)	Horizontal only	Horizontal / Vertical

See also:
→ Basket Strainer
→ T-Type Strainer
→ Strainer Selection Hub

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60-Second Selection Guide

Choose a Y Strainer when:

• Installation space is limited

• Steam or high-pressure service is involved

• Debris load is low to moderate

• Inline compact design is preferred

Choose a Basket Strainer when:

• High flow rate and high dirt-holding capacity are required

• Reduced cleaning frequency is important

Choose a T-Type Strainer when:

• Straight-through piping layout is preferred

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RFQ Checklist – Get an Accurate Quote

To help us provide correct sizing and quotation, please include:

• Line size (e.g., NPS 4″ / DN100)

• Pressure class or design pressure (e.g., Class 300)

• Media and temperature (e.g., saturated steam, 250°C)

• Required filtration (e.g., 40 mesh / 1.0 mm perforation)

• End connection type (RF / BW / Threaded)

• Body and screen material (e.g., WCB body + 316 screen)

• Optional features (blow-off, DP taps, special alloy, etc.)

Not sure about some details? Submit what you have—our engineering team will follow up with sizing support.

Request a Quote Now.

Documentation available: EN 10204 3.1/3.2 MTR, hydro test report, inspection records (upon request).

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What is a Y Strainer?

A Y strainer is a pressure-rated pipeline filtration device designed to remove solid debris from steam, gas, and liquid lines. It protects downstream equipment such as pumps, control valves, steam traps, flow meters, regulators, and instrumentation from clogging, erosion, and premature wear.

The device consists of:

• Pressure-containing body

• Removable perforated or mesh screen

• Bolted cap or cover

• Optional blow-off port

Unlike basket strainers, Y strainers offer a compact inline configuration suitable for space-constrained installations.

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How Does a Y Strainer Work?

Fluid enters the strainer body and passes through the perforated or mesh-lined screen. Solid particles larger than the screen openings are retained inside the screen chamber.

Clean fluid exits the outlet while debris accumulates in the leg section.

As debris builds up, differential pressure (ΔP) increases. Cleaning is typically recommended when ΔP reaches 5–15 psi depending on system requirements.

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Common Y Strainer Selection & Installation Mistakes to Avoid

❌ Installing the screen leg upward – debris must collect downward.

✅ Screen leg down is recommended for most horizontal installations.

• Choosing too coarse mesh to reduce pressure drop – may allow damaging particles downstream.

• Ignoring material compatibility in high-temperature steam service.

• Failing to install isolation valves for safe maintenance.

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Mesh / Perforation Selection Reference

Mesh Size	Micron Rating	Typical Application
20 mesh	~840 μm	Large debris, general water service
40 mesh	~420 μm	Standard pump & steam protection
60 mesh	~250 μm	Light chemical / compressed air
100 mesh	~149 μm	Instrument protection
200 mesh	~74 μm	Fine filtration applications

If you provide particle size or downstream equipment tolerance, we can recommend the most appropriate screen specification.

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Typical Applications

Y strainers are widely used in:

• Steam systems

• Cooling water lines

• Natural gas pipelines

• Chemical processing

• Compressed air systems

They are considered the standard filtration solution for steam applications due to their compact, pressure-rated design.

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Installation & Maintenance Guidelines

• Install horizontally with the leg pointing downward

• Vertical installation must be confirmed based on flow direction and debris behavior

• Install upstream and downstream isolation valves

• Monitor differential pressure regularly

Always fully depressurize before removing the cap.

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FAQ

What is a Y strainer used for?
To remove debris from steam, liquid, and gas pipelines and protect downstream equipment.

Y strainer vs basket strainer – how do I choose?
Choose Y for compact, high-pressure, space-limited systems. Choose basket for higher dirt capacity and reduced cleaning frequency.

Can a Y strainer be installed vertically?
Yes, but installation must be confirmed based on flow direction and debris behavior to ensure proper debris collection.

How do I select mesh size?
Mesh depends on particle size and downstream equipment sensitivity. Provide system details for accurate recommendation.

When should I clean a Y strainer?
When differential pressure reaches 5–15 psi depending on system design.

Can you provide MTR and hydro test reports?
Yes. EN 10204 material certifications and inspection records are available upon request.

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Summary

A properly sized Y strainer ensures reliable protection of steam and industrial pipeline systems while minimizing downtime and maintenance risk.

Our engineering team can review your system parameters and recommend the optimal screen specification and configuration.

For pricing and technical confirmation, please submit your application details below. Our engineering team will review and respond promptly.

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