Valve Check is a dynamic company specializing in the manufacturing, many types of industrial valves. With multiple divisions catering to diverse industry needs, Valve Check ensures comprehensive solutions for our clients.

Valve Check


Boylston 21st Century, formerly known as Boylston Steam Specialties since its establishment in 1888, stands as the premier name in the steam valve industry. With a rich legacy spanning over a century, we have consistently set the benchmark for excellence in Pressure Reducing Valves (PRVs) that guarantee longevity and unparalleled performance. Our commitment to surpassing industry standards reflects in every valve we produce, ensuring unmatched quality and reliability. Choose Boylston 21st Century for PRVs that stand the test of time and deliver optimal performance for all your steam system needs.

Specialty Fittings Incorporated

We are your go-to manufacturer for hydraulic fittings and adapters. At SFI, we specialize in taking your project from design and prototyping to full production. Our product range includes ferrules, flanges, crimp fittings, swivel fittings, inch compression fittings, flareless fittings, PTFE couplings, conversion adapters, spuds, PIN fittings, O-ring BOSS fittings, and IIC 370 flares, among others. Our advanced manufacturing capabilities include 7-axis machining, Swiss turning, screw machines, molding, lathes, mills, welding, fabricating, brazing, and broaching.