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The LDI INDUSTRIES FV101-S is a threaded filter vent designed to allow controlled air passage in fluid and pneumatic line applications. Constructed from steel with a zinc-plated finish, it resists corrosion in typical shop and field environments. The 1/8 inch threaded connection installs directly into a port or fitting, making it a compact, inline solution for venting filtered air. At 1.0625 inches high with 0.75 inch hex flats, it fits standard wrenching without special tooling. Hydraulic, pneumatic, and fluid power technicians install this type of vent to prevent pressure buildup and allow systems to breathe during fill, drain, or cycling operations.
The FV101-S suits residential and light commercial fluid power, hydraulic, and pneumatic systems where a small-format threaded vent is required. It is appropriate for use in reservoir caps, manifolds, cylinders, and similar ported assemblies that require atmospheric venting with particulate filtration. Its compact envelope makes it a practical fit in tight installation spaces common in mobile equipment, HVAC ancillary systems, and industrial fluid circuits.
Designed as an OEM-style replacement or service part for fluid power, pneumatic, and hydraulic assemblies requiring a 1/8 inch threaded filter vent.
Installation is typically performed by hydraulic technicians, fluid power specialists, or qualified maintenance personnel. Depressurize and isolate the system before removing or installing any vent fitting. Use a standard open-end or combination wrench on the 0.75 inch hex flats and apply appropriate thread sealant or PTFE tape per manufacturer and applicable plumbing code guidelines. Do not overtighten, as this can damage the threaded port or the vent body.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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