TECHNICAL LIBRARY
Technical library
Practical guides for fire-protection and water engineers and contractors: product differences, how to choose, and the formulas you need on site. Every article is reviewed by our technical team.
الرشاشات والتصميم الهيدروليكيWet Barrel vs Dry Barrel Fire Hydrants: The Difference and When to Use EachHow wet and dry barrel fire hydrants work, the difference in installation and maintenance, outlets and approvals, with UL-listed, FM-approved MECH models.الرشاشات والتصميم الهيدروليكيThe Test and Drain Valve: Its Purpose, Location and Use in InspectionOne valve with three positions that tests a floor's flow and drains the system: how it works, where it goes after the…المحابس والصمامات10 Questions to Ask Your Supplier Before Buying Fire Protection Valves and FittingsA practical list of questions for contractors and buyers that separates a reliable supplier from the rest: approval, model, pressure, certificates, availability…الرشاشات والتصميم الهيدروليكيFire Water Tanks: Wall Penetrations, Anti-Vortex Plates, Vents and Fill PipesEverything that passes through the wall or roof of a concrete fire water tank: puddle flanges, the anti-vortex plate on the suction,…المحابس والصماماتThe Complete Guide to Water Supply Network Valves: Types, Selection and SpecificationsA reference guide to water network valves (the MECH blue range): isolation, check, butterfly, strainers, pressure reducing and relief, air release, flexible…الوصلات المحززة10 Common Grooved Coupling Installation Mistakes and How to Avoid ThemThe ten mistakes that most often make grooved joints fail the test or fail in service, why they happen, and how to…الرشاشات والتصميم الهيدروليكيHydrostatic Testing of Fire Protection Systems: Pressure, Duration and StepsHow a sprinkler network is tested before handover: test pressure and duration under NFPA 13, preparation, the steps in order, and what…المحابس والصماماتThe Fire Pump Room: Required Valves and Accessories and Their Order (NFPA 20)The order of valves and accessories on the suction and discharge sides of a fire pump room, what the standard prohibits, the…المحابس والصماماتPost Indicator Valves and Wall Indicator Posts (PIV and WIV): How They Work and When to Use ThemHow a valve buried underground or behind a wall is operated and its position read from a distance: the components of the…المحابس والصماماتFlange Compatibility: American Class 125/150 versus European PN16, and When the Holes Line UpA comparison of flange diameter, bolt circle and number of holes between ASME and EN PN16 flanges from 2 to 12 inch,…المحابس والصماماتPressure Ratings Explained: 175 and 300 PSI, PN16 and Class 125/150How to read working pressure on a datasheet, the difference between a valve body rating and a flange class, with a psi,…الرشاشات والتصميم الهيدروليكيWet, Dry, Pre-action and Deluge: Comparing Sprinkler Systems and When to Use EachA detailed comparison of the four sprinkler system types: how each works, its main valve, response time, uses, and the types of…
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