News & Technical Articles

July 12, 2026 • 12 min read

Pipe schedule chart and explanation — how NPS, DN, OD and schedule number relate; SCH 10, 40, 80, 160, STD, XS and XXS wall thicknesses; ASME B36.10M vs B36.19M; and how to read and specify pipe sizes correctly.

July 11, 2026 • 15 min read

Complete ball valve guide — floating vs trunnion mounted design, full bore vs reduced bore, one/two/three-piece and top-entry bodies, seat materials, fire-safe and anti-static requirements, API 6D and API 608 standards,…

July 10, 2026 • 16 min read

Control valve guide — globe, cage-guided, V-port ball, butterfly and eccentric plug types; Cv sizing per IEC 60534, linear vs equal percentage characteristics, cavitation and flashing, anti-noise trim, actuators, positio…

July 09, 2026 • 15 min read

Pressure relief and safety valve guide — conventional, balanced bellows and pilot-operated types; API 520/521/526 sizing, set pressure, overpressure and blowdown, backpressure limits, orifice letters D–T, and selection f…

July 08, 2026 • 13 min read

Sewage and wastewater pump guide — submersible, dry-pit and self-priming types; vortex, single-channel, multi-channel, grinder and chopper impellers; solids passage, ragging and clogging prevention, wet well design and p…

July 07, 2026 • 14 min read

NFPA 20 fire pump guide — horizontal split case, vertical inline, end suction and vertical turbine types; the churn / 100% / 150% performance curve, jockey pumps, controllers, diesel vs electric drivers, pressure setting…

July 06, 2026 • 13 min read

Positive displacement pump guide — rotary types (gear, screw, lobe, vane, progressive cavity) and reciprocating types (piston, plunger, diaphragm). How they differ from centrifugal pumps, viscosity handling, relief valve…

July 05, 2026 • 13 min read

Air operated double diaphragm (AODD) pump guide — working principle, diaphragm and body materials, run-dry and self-priming capability, applications for slurries, acids and shear-sensitive fluids, plus selection and trou…

July 04, 2026 • 14 min read

Check valve types explained — swing, lift, ball, dual plate (wafer), tilting disc, and nozzle. How each works, water hammer prevention, cracking pressure, installation orientation, and a clear selection guide with compar…