Strainer Valve

[Percival Blanco]

TheFIMCO Strainer Valve Assembly removes solids and particulates that may cause inconsistencies in flow and damage to equipment. Built as a replacement strainer for FIMCO 50 Gallon Pro Series Trailer Sprayers.

A Y strainer mechanically removes solids and other particles when fluid flows through it. They are essential in numerous fluid control applications to ensure that particles within the fluid do not negatively affect any downstream component. In this article, we will review their design, use cases, how to size the mesh filter, materials, and how to clean them.

Y strainers are generally necessary for processes that require clean fluids. While clean fluids can help maximize the reliability and lifespan of any mechanical system, they are critical with solenoid valve types because they are very sensitive to dirt. Any solids entering the stream can disrupt and even damage the entire system. In addition to protecting the performance of solenoid valves, they also help safeguard other types of mechanical equipment, including:

A simple Y strainer can keep these components, which are some of the most valuable and expensive parts of the pipeline, protected from the presence of pipe scale, rust, sediment or any other kind of debris. Y strainers, also referred to as wye strainers, are available in various designs and connection types.

As its name implies, a Y strainer is shaped like a Y and is used to filter or strain out particulates from steam, gas, or liquid. This mechanical straining process is possible because of a filter element composed of mesh, perforated metal, or a wedge wire straining element. The most common kind of straining element is a wire mesh. Some also include blow-off valves that make the cleaning process easier in applications with more substantial dirt.

A Y strainer cannot function properly without a properly sized mesh filter. There are two terms that describe the size of the openings in the strainer through which debris passes. One is micron and the other is mesh size. Though these are two different measurements, they describe the same thing.

A strainers mesh size indicates how many openings there are in the mesh across one linear inch. The ratings typically range from a size 3 mesh screen with 6,730 microns to a size 400 mesh screen with 37 microns.

It's important to take the time to size the mesh filter correctly. A mesh filter that is too small or too large can negatively affect the system. If the filter is too small, there will be a higher pressure drop from inlet to outlet. Additionally, removing too much debris from the flow can clog the filter and increase the pressure drop. If the filter is too large, the performance and life span of the downstream equipment can be negatively effected.

There are various material options for the strainer's housing and seal. The variety of housing materials fit well with certain environments and media. The seal helps to extend the life of the strainer.

The necessary frequency for cleaning the Y strainer depends on the process, mesh size, and materials being filtered. Close off any valve connections to both sides of the strainer, loosen the plug at the end of the filter leg, and empty the collected material from the filter.

Liquid applications tend to become infiltrated by sand and gravel, and Y strainers can help keep those particles out to ensure the liquid stays clean. Especially when they work in tandem with other water-handling applications, these strainers can protect important (and expensive) equipment from damage, corrosion, or clogs that could result from such contamination.

Pressure oscillation is a phenomenon that develops in some water supply systems in high-rise buildings. It can be a nuisance for building occupants as it creates unstable flows in faucets, disturbs the stable mix of hot and cold shower water, and might even damage delicate appliances such as washing machines and dishwashers.

In order to protect the PRV from debris that may flow in the pipeline and disturb its operation, a pressure reduction station should include a strainer that is installed on the upstream side of the PRV.

The following are some possible causes of excessive pressure loss at the filter site:

BERMAD provides comprehensive support for engineers and designers of water supply systems. If you would like to know more about how we can help you eliminate pressure oscillation and other unwanted water supply system problems in your next building or construction project, contact us here to get in touch with a BERMAD representative in your region.

Water supply systems on highrise buildings, including their control valves, are required to operate trouble-free and with minimal maintenance for many years. Therefore, selecting the most appropriate control valves models and integrating safety valves into the various systems from the very first planning stages is essential to ensure compliance with

A Y strainer is typically used when there are small amounts of material and particles to be collected, and it must be placed facing the downward flow. For automatic cleaning, Y strainers can come with a blow-off connection.

My fuel valve assy has been leaking for a while now; not major; about two drops per minute. The C, D, E, F Parts Manual suggests the valve is a HE-769. However, LASAR offers more than one seal kit for the vintage (pre J) Mooney's. A couple of kits for the H&E 769 Selector / Gascolator, and one for the Dukes 3331 which also covers models up to J. They also have just a gasket for the bowl, P/N 940057-001 also good for models up to J.

Found the source of my AVGAS drip. It wasn't leaking from the bowl / gasket. It was leaking from the nut that has to be removed every time you drop the bowl and check the screen. I'm guessing those are aluminum fittings.

That's a common leak point. Mine leaked from there after maintenance at a reputable shop, so I just snugged it. And just snug, those nuts will crack if tightened too much. It really doesn't take much to seat them properly.

I recently bought the HE fuel selector rebuild kit from Lasar. I sent Dan a couple pictures and he figured that was the right one. This is what ours looks like, and the old sticker was barely readable but HE could sorta be made out from what's left of it. Ours has been seeping undetected for a little while, the blue dye makes it look quite messy around the connections. We discovered the leak, however, by a small amount of fuel collecting inside the cockpit around the selector valve handle itself.

When I talked to LASAR years ago they said the only difference in the two kits was the drawing that went with them, the seals that come in them are the same. If you look at the part numbers of the two seals that come in each kit they are the same.

The torque is very specific, I wouldn't want to chance it that "just snug" isn't going to be too much and snap the bolt. There is also a tendency to snug it "just a little more" if there is a slow drip. It should be 15-20 inch-lbs. It is a very light torque.

"Just snug" was in reference to the fuel line fitting above the T that I was pointing to in my photo. I torqued the bolt holding the bowl to 20 in lbs. You may be right about the washer. I ordered a rebuild kit and a couple of spare gaskets from Lasar. When received I'll make sure that part is in there. Appreciate the sealing washer P/N.

Aprilaire Flow-Thru humidifiers have a solenoid with a small strainer filter in the body. These strainers should be inspected and cleaned when replacing the water panel. If the strainer becomes clogged the water pressure will tear it and pieces will jam the solenoid or loose pieces will block the orifice.

A. u. K. Mueller is associated with more than 60 years of experience in solution-centered development and production of solenoid valves, control valves and special valves, standing for reliability and quality "Made in Germany".

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Water pressure reducing valve 500XLYSBR with Strainer has high flow capacity making this device most suitable for industrial water lines and commercial irrigation systems.This relief valve with balanced piston design enables the regulator to react in a smooth and responsive manner to changes in system flow demand, while at the same time, providing protection from inlet pressure changes

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