Basket Type Strainer

QS Pipe Fitting: Putian Basket Type Strainer

A basket type strainer with a lift-out basket that catches debris and protects downstream equipment on process and water lines.

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One-Minute Overview

In-line basket strainer that catches scale, weld slag and debris before downstream equipment.
Lift-out basket lifts clear for cleaning without breaking the main pipe joints.
Sized by flow, mesh and pressure drop rather than by pipe diameter alone.
Connections, mesh and pressure class are confirmed per inquiry against the line.

A basket type strainer is a protection device disguised as a fitting: the flow passes through a perforated or mesh basket that catches scale, weld slag and debris before they reach a pump, control valve, meter or heat exchanger. Its main virtue is the lift-out basket, which comes out through the top cover for cleaning while the pipe stays bolted in place. Qishine supplies basket strainers for process, water and utility lines with flanged or butt weld connections, sized to the flow and the dirt load rather than to the pipe diameter alone. Because the basket is a service part, access and isolation matter as much as the filtration rating.

Name: Basket Type Strainer
Type: In-line strainer with removable basket
Material: Body and basket grades matched to the line and medium
Standard: Flanged or butt weld connections to the piping class
End: Flanged or bevelled ends, with drain and vent provisions
Feature: Lift-out basket, cleanable without disturbing the main joints
Sizes in inches, mesh and pressure class are confirmed per inquiry, and a detailed specification sheet is available on request.

Choose the basket by what you need to stop, not by the pipe size. Mesh or perforation is set by the smallest particle that would damage the downstream equipment, and the open area has to be large enough that a clean basket does not eat the whole pressure drop budget. Allow for the fact that a loaded basket drops more pressure than a clean one, and size the body so the flow velocity stays reasonable. Put the strainer where there is room to lift the basket clear, with isolation valves on both sides and a drain on the cover. Every size, mesh, connection and pressure class is confirmed per inquiry against the line conditions.

Operation is mostly about watching differential pressure. Fit gauges or taps upstream and downstream and clean the basket when the drop climbs, not on a fixed calendar. Open the cover only after the line is isolated and depressurised, lift the basket out, wash it and check the mesh for tears or a collapsed seam before dropping it back. A basket installed backwards or without its seat seal simply lets the dirt through, so mark the flow arrow and confirm the gasket. Basket strainers sit on pump suction, ahead of control valves and flow meters, and on cooling water and utility headers. A bypass keeps critical lines running while the basket is out for cleaning.

FAQ

Q1. How is a basket strainer sized for a pipeline?

Size it on flow and dirt load, not pipe diameter alone. Pick the mesh to catch the smallest damaging particle, then check that the open area keeps clean pressure drop low and that a loaded basket still passes the design flow. Leave headroom, isolation and access to lift the basket out.

Q2. Do I have to shut the whole line down just to clean the basket?

You isolate the strainer, drain and depressurise it, but the pipe itself stays bolted in place. That is the point of the lift-out basket: the cover comes off and the basket lifts out while the body remains in the line. On critical duties a bypass lets the process keep running meanwhile.

Q3. Is the basket just a colander for the pipe, or does the mesh choice actually matter?

The mesh matters a lot. Too coarse and it waves the slag through to the pump; too fine and it chokes the line and spends its life in the cleaning bay. Choose the opening for the particle you actually need to stop, then size the area so the pressure drop stays sane.

Q4. How long will production take?

Standard sizes are typically ready within 30 days, and in-stock items ship immediately. Larger or custom orders get a confirmed date per order, because the schedule depends on quantity, material, the bolt pattern you specify, and how busy production is at the moment you order.

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