Valves & Parts

Telescopic Y-Strainer (SGL41H)

Telescopic Y-Strainer SGL41H is essential for protecting hydraulic water control valves and precision machinery from clogging. It is installed at the inlet end to filter out particulate impurities, with an integrated expansion joint for easy installation and removal.

Key Features

Combines Y-strainer and telescopic expansion joint in one body
Greatly simplifies valve maintenance and pipeline installation
High-grade stainless steel filter screen with customizable mesh size
Durable ductile iron body with epoxy painting

Technical Specifications

Size Range: DN50 - DN600
Working Pressure: 1.0 MPa / 1.6 MPa
Screen Material: SS304 / SS316
Screen Mesh: 18-30 mesh (Water), 40-100 mesh (Steam)
Body Material: Ductile Iron (QT450)

Parts & Materials List

Filter Body: Ductile Iron (QT450-10)
Expansion Sleeve: Carbon Steel / Ductile Iron
Filter Screen: Stainless Steel 304 / 316
Stem Seals: NBR / Graphite
Telescopic Bolts: Medium Carbon Steel Zinc Plated

Applications

Water supply & distribution
Wastewater and sewage networks
Industrial process pipelines
HVAC systems

Quality & Testing

100% shell and seat pressure testing per GB/T13927 or EN 12266-1; epoxy resin coating tested for corrosion resistance.

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Frequently Asked Questions

What standards and connection types are available for Wanlian valves?

Wanlian valves are manufactured to GB, ANSI, DIN and JIS standards on request. Flanged, grooved, wafer and threaded connections are available depending on the model. Tell our engineers your DN/PN and connection type in the inquiry and we will confirm the matching configuration.

What materials are used for the valve body and sealing?

Bodies are typically ductile iron (QT450), cast iron or cast/forged steel depending on the model. Sealing elements use EPDM or NBR rubber, and stems are stainless steel (2Cr13/304). Material options can be customized for specific media and temperature ranges.

What is the MOQ and lead time?

Standard MOQ is typically 20 units per model for stock sizes, with production lead times of 15-30 days depending on quantity and customization. Sample orders are available for pre-shipment testing.

How are the valves tested before shipment?

Every valve undergoes 100% shell and seat pressure testing in accordance with the applicable standard (e.g. GB/T13927, EN 12266-1). Test reports and third-party inspection can be arranged on request.