Strainers & Filters

Strainers remove debris from process fluid before it reaches downstream equipment—pumps, control valves, heat exchangers, spray nozzles, instrumentation. Sight flow indicators let operators visually confirm process conditions—flow presence, flow direction, fluid clarity, entrained gas, reaction progress. These two product families serve different functions but share the same installation context: they sit in the pipeline as inline components, between the source and the sensitive downstream equipment that debris or unexpected process conditions would damage. FLOWKS manufactures five strainer configurations and two sight flow indicator configurations. Basket strainers use a cylindrical or basket-shaped screen inside a body cavity—debris collects inside the basket, clean fluid passes through to the outlet, top-cover access makes basket removal a five-minute job. Y-type strainers use a compact angled screen chamber branching off the main flow passage—smaller, lighter, rated to Class 1500 at small sizes, the default for steam, air, and small-bore process protection. Dual basket strainers add a diverter valve between two parallel chambers—switch flow from one to the other without shutting down the line. Duplex basket strainers upgrade the changeover to a four-port or six-port integral valve that simultaneously swaps inlet and outlet in one lever turn, with bleed/vent ports for safe offline maintenance. Temporary strainers are commissioning-only components—perforated cones or flat plates installed between pipeline flanges to catch construction debris during start-up, removed after the system is clean. Window-type sight glasses provide a borosilicate glass panel for visual observation—single or dual-window for backlit visibility. Flapper/ball-type sight flow indicators add an internal moving element that deflects with flow direction and velocity, giving visual confirmation of flow presence, direction, and relative rate in addition to fluid appearance.

FLOWKS strainers and sight flow indicators protect downstream equipment and provide visual process verification across industrial piping systems. Basket strainers offer open-top screen access for fast debris removal—five-minute maintenance without pipeline disconnection, mesh sizes from coarse pump protection (1/8"–1/2" perforations) to fine instrument and nozzle protection (40–100 mesh wire). Y-type strainers deliver compact high-pressure screening in angled chambers—rated to Class 1500, ideal for steam, compressed air, hydraulic, and small-bore process lines from 1/2" to 12". Dual basket strainers enable continuous-flow straining with a diverter valve switching between two parallel chambers—zero downtime for basket cleaning on critical pump suction and cooling water lines. Duplex basket strainers upgrade the changeover to simultaneous inlet/outlet switching with integral four-port or six-port valve and bleed/vent ports for safe offline maintenance. Temporary cone and flat-plate strainers catch construction debris during commissioning, removed after clean-up cycle. Window-type sight glasses provide borosilicate glass panels for fluid visual inspection—single or dual-window with backlit visibility for dark or opaque media. Flapper and ball-type sight flow indicators add internal motion elements for visual confirmation of flow direction, presence, and relative velocity on small-diameter lines.