Strainers FMSTR

A steam line can contain certain amount of debris in it. During the course of operations, corrosion, wear and tear and other such factors will lead to occasional release of chips, bur and other particulate materials in the lines. Such debris in the pipe can significantly damage valuable equipment like steam traps, valves, flow meters etc.

A rightly selected strainer helps protect expensive and critical downstream equipment against . Forbes Marshall offers a wide range of strainers suited to different processes across industries. Forbes Marshall strainers are made from quality material in accordance with stringent global standards and are available with optional IBR certification.

Forbes Marshall cast strainers are popular among steam users because of the wide range, availability of different types of end connections as per user demands, ease of on-line maintenance and availability of spares. High screening area ensures there is no or minimal pressure drop even in clogged condition.

Key Technical Specifications

Max Operating Pressure (PMO): Up to 57.5 bar g / 833.9 psig (FMSTR51/52/54-T Class 600).
Max Operating Temperature (TMO): Up to 425°C / 797°F (Steel versions).
Sizes & Connections: DN 15 to DN 300 (1/2″ to 12″); Screwed, Socket Weld, Flanged

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A wide range of capacities, mesh sizes, end connections and ratings to choose from to exactly suit your application.
Certificates and comprehensive test reports available on demand.
Designed to offer high screening area which leads to minimal pressure drop across the strainer.

Variants

FMSTR31

Material: Cast Iron.
Sizes/Connections: DN 15, 20, 25, 40 and 50 Screwed BSPT/NPT/BSP.

FMSTR51 / FMSTR52

Material: Cast Steel.
Sizes/Connections: DN 15, 20, 25, 40 and 50 Screwed BSPT/NPT/BSP (FMSTR51) and socket weld ends (FMSTR52).

FMSTR34, FMSTR54, FMSTR54#600

Material: Cast Iron (FMSTR34) / Cast Steel (FMSTR54 / FMSTR54#600).
Sizes/Connections: CI: DN 40 up to 200; CS: DN 40 up to 300.

FMSTR54-T

Cast Strainer with a cap/flange fitted with through bolts and nuts.
Material: Cast Steel.
Sizes/Connections: DN 50 up to 300.

FMSTR51#600 / FMSTR52#600

Y-type Forged Steel Strainers.
Material: Forged Carbon Steel.
Sizes/Connections: DN 15, 20, 25 and 40 Screwed BSPT/NPT/BSP and Socket Weld ends (Also available with Class 150, 300, and 600 weld-on flange on request).

FMSTR72 / FMSTR73

High-pressure strainers for Class 1500.
Material: Forged Alloy Steel (Carbon Steel available on request).
Sizes/Connections: DN 15, 20, 25 and 40 Socket Weld (FMSTR72) and Butt Weld (FMSTR73) ends.

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Frequently Asked Questions

How often should the strainer screen be cleaned?

Cleaning frequency depends on system dirt load. Pressure drop across the strainer will increase as debris blocks the sieve; it should be cleaned when this pressure drop exceeds acceptable limits.

How do you install a Y-strainer on a steam line?

On steam or gas applications, the strainer should be installed in a horizontal pipeline with the “Y” pocket in the horizontal plane to prevent water pooling.