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Y-Type Strainer

Industrial Strainers

Our industrial strainers are designed to remove solid particles from pipelines, protecting downstream equipment like pumps, meters, and valves from damage. We offer a variety of strainer types to suit your specific application.

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Product Specifications

Types Y-Type, T-Type, Basket, Duplex
End Connection Flanged, Screwed, Socket-weld
Material Cast Iron, Carbon Steel, Stainless Steel
Pressure Rating ASME Class 125 to 1500
Size Range 1/2" to 36"

Materials of Construction

Part Carbon Steel Alloy Steel Stainless Steel
BodyA216 WCB/WCC; A352 LCB/LCCA217 WC6/WC9A351 CF8/CF8M
CoverA216 WCB/WCC; A352 LCB/LCCA217 WC6/WC9A351 CF8/CF8M
Screen/Basket——SS304 / SS316 / SS316L
Blow‑off/DrainA105 / A216 WCBA182 F11/F22A182 F304/F316
StudsA193 B7A193 B16A193 B8
NutsA194 2HA194 7A194 8
GasketSpiral wound SS316/304/321 with graphite filler

Purchase Options

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Materials of Construction (MOC)

Component Material Specification
Body & Bonnet Ductile Iron (ASTM A536 / EN-GJS-400-15)
Stem / Spindle SS 410 / SS 420
Seat / Trim EPDM / NBR / Bronze

Technical Specifications

Parameter Specification / Standard
Manufacturing / Design Standard EN 1171 / AWWA C509 / BS 5163
Testing Standard API 598 / EN 12266-1
Pressure Rating PN16 / PN25

Material of Construction

PART NO.PART NAMEMATERIAL
01BODYCAST IRON
02RINGCAST IRON
03PERFORATED PLATECAST IRON
04PLUGGUN METAL
05SEATGUN METAL
06SPINDLECAST IRON
07PERFORATED CAGEM.S
08BOLT & NUTM.S

Testing Details & Standards

  • STD: PN-10
  • BODY: 15
  • SEAT: 11.0
  • AIR: -

Dimension Tables

SIZEAB
50190150
80210180
100235215
125254255
150300280
200445315
250455450
300470485

Technical Specifications

Design & Exporting

Standard: BS 5351 / API 6D

Testing & Inspection

Standard: API 598 / BS 5146

Pressure Rating

Class: 150# / 300#

Temperature Rating

Max Temp: 180°C - 300°C

Test Pressure Requirements

Test Type Pressure Standard
Hydrostatic Body Test 425 PSI (Class 150) API 598
Seat Test 300 PSI (Class 150) API 598
Air Test 80 PSI API 598

Materials of Construction

Part Name Material Specification
Body ASTM A351 Gr. CF8/CF8M/CF3/CF3M, ASTM A216 WCB, Cast Iron
Ball/Disc AISI 304/316/304L/316L Stainless Steel
Stem AISI 304/316/304L/316L, AISI 410
Seat/Seal PTFE, Reinforced PTFE, Graphite
Gaskets Spiral Wound Metallic, PTFE, Graphite
Bolting ASTM A193 Gr. B7/B8, Carbon Steel

Size Range & End Connections

Size Range:

1/2" to 12" (15mm to 300mm)

End Connections:

Flanged (ANSI B16.5), Screwed (BSP/NPT), Socket Weld (ANSI B16.11), Tri-Clover

Pressure Classes:

Class 150, 300, 600, 800, 1500, 2500

Face to Face:

As per ANSI B16.10, BS 5351

Technical Notes

Standards Compliance

API 6D

Pipeline Valves

API 598

Valve Testing

BS 5351

Steel Ball Valves

ANSI B16.34

Valve Design

ISO 9001

Quality Management

IBR

Indian Boiler Regulations

Industries Served

Oil & Gas

Upstream, Midstream & Downstream processing facilities

Petrochemical

Refineries and chemical processing plants

Fire Protection

NFPA-compliant systems for Middle East projects

Water Treatment

Desalination and wastewater facilities

Power Generation

Conventional and renewable energy plants

LNG & Gas

LNG terminals and gas distribution (KSA/Qatar projects)

Why Choose Supreme Valves

Export-Ready Documentation

Complete documentation package for SABER (Saudi Arabia), CITC (Kuwait), and Civil Defence approvals across all GCC countries. Material test certificates (MTC) and mill reports provided with every shipment.

38+ Years of Manufacturing Excellence

Established in 1986, we have supplied valves to major oilfield operators, EPC contractors, and distributors across the Middle East, Southeast Asia, and North America.

International Standards Compliance

API 600, API 6D, ASME B16.34, BS 1873, EN 12516 certified. IBR approval available for boiler applications. FM Global and UL-listed products for fire protection.

Reliable delivery plans

Standard delivery 3-5 weeks for in-stock items. Dedicated export packing with moisture-resistant packaging for sea freight. On-time delivery rate exceeding 97% for international shipments.

Frequently Asked Questions

What mesh size for steam strainer vs water strainer?

Steam strainers use: 30-mesh (588 micron) for main steam lines to prevent scale and pipe rust from entering traps and meters; 60-mesh (250 micron) for instrument air and control steam where finer protection is needed. The larger mesh for steam accounts for larger particle sizes expected and higher velocities. Water strainers use: 40-mesh (400 micron) for general service, 60-mesh (250 micron) for cooling water and process water, 80-mesh (180 micron) for fine filtration of metering and pump suction. For Saudi Arabian seawater cooling, 40-mesh is standard for pump protection; for instrument air, 60-mesh prevents nozzle blocking. Mesh selection must also consider pressure drop - finer mesh increases differential pressure.

Y-strainer vs basket strainer - which for duplex filtration?

Y-strainers have a screening element shaped like a Y, suitable for horizontal or vertical pipelines with limited space. They handle lower flow rates and smaller pipe sizes (to 14 inches typically). Basket strainers have a large basket element in a pot-style body, providing 3-5x more screen area than Y-strainers. For duplex (two basket) strainers with diverter valve, they allow online cleaning - one basket in service while other is cleaned. For Saudi Arabian water treatment: Y-strainer for instrument lines and small flows; duplex basket strainer for pump suction and large flows where online maintenance is required. Basket strainers also handle viscous fluids better due to larger screen area.

How to select strainer for protecting pump suction?

Pump suction strainer selection: (1) Open area ratio (screen area / pipe area) should be minimum 3:1 to minimize pressure drop - typically 4:1 for good practice, (2) Free strainer area (mesh open area) = mesh percent x open area ratio, (3) Select mesh based on pump tolerance: 40-mesh for general water pumps (0.5mm tolerance), 80-mesh for ANSI/Hydraulic Institute standards pump, (4) For Saudi Arabian seawater pumps (Samsung, KSB), specify minimum 40-mesh with 4:1 open area ratio. Basket strainers are preferred over Y-strainers for pump suction due to larger capacity. Provide differential pressure gauge to signal when cleaning is needed - typically 10-15 PSI differential.

What is blow-down valve connection for strainer?

Blow-down (blow-off) connection is a threaded outlet at the strainer low point for draining debris and flushing fluid during maintenance. Standard blow-down sizes: 1/2 inch NPT for strainers to 2 inch, 3/4 inch for 2-4 inch strainers, 1 inch for larger. For Saudi Arabian steam service, blow-down is essential for removing scale and rust. The blow-down valve (typically a ball valve or needle valve) should be full port to allow complete draining. In Riyadh district heating, blow-down is routed to a flash tank for steam recovery. Never install a strainer without blow-down capability in steam or dirty water service.

Cast iron vs stainless steel strainer material selection?

Cast iron (ASTM A126 Class B) strainers are economical for: (1) water and low-pressure steam service below 230°C, (2) budget applications where corrosion allowance is acceptable, (3) buried service with external coating. Not suitable for: corrosive fluids, high-pressure steam above Class 300, or where rust contamination is unacceptable. Stainless steel (SS316/CF8M) strainers are required for: (1) chemical and process lines, (2) seawater and offshore platforms (Saudi Aramco NADCP requirement), (3) food and pharmaceutical (3-A sanitary), (4) high-pressure steam service, (5) where zero corrosion contamination is critical. For Jeddah RO desalination, SS316 strainers with 3.1 MTC are mandatory per SWCC specifications.