Technical Guides
Ammonia Service Valves: Material and Sealing Selection for NH3 Applications
How to select body materials, trim, and soft seals for anhydrous ammonia, liquid NH3, and the new green and blue ammonia value chain.
Technical Guides
Technical Guides
Valve Pressure Class Selection: From Class 150 to Class 2500
A working explanation of the ASME B16.34 pressure-temperature rating system and how to choose the right valve class without over-buying or under-specifying.
Technical Guides
Positive Material Identification (PMI) for Valve Bodies and Trim
A practical guide to PMI methods, acceptance criteria, and purchasing clauses for verifying valve body and trim alloys before they reach your pipeline.
Technical Guides
Material Test Certificates for Valve Procurement: EN 10204 3.1 vs 3.2
What valve procurement teams need to know about EN 10204 material test certificates: differences between 2.1, 2.2, 3.1 and 3.2, certificate contents, PMI verification and traceability.
Technical Guides
Valve Insulation and Steam Jacket Design for Viscous and Crystallizing Media
How jacketed ball valves and other jacket designs keep sulfur, asphalt, resins, and molten media flowing — jacket types, pressure ratings, drainage, and a practical selection checklist.
Technical Guides
Valve Non-Destructive Testing Explained: RT, PT, MT, and UT
A buyer's and engineer's guide to RT, PT, MT and UT in valve manufacturing: applicable areas, defect types, acceptance standards, witness points, and how to specify NDT without disputes.
Technical Guides
Valve Bonnet Design Compared: Bolted, Welded, and Pressure-Seal Configurations
An engineering comparison of bolted, welded, and pressure-seal bonnet constructions for gate and globe valves, with guidance on pressure class, emissions, and maintenance trade-offs.
Technical Guides
Metal Seated vs Soft Seated Ball Valves: Choosing the Sealing Philosophy
A practical engineering comparison of metal seated and soft seated ball valves, covering leakage classes, temperature and pressure limits, hardfacing options and actuator implications.
Technical Guides
Control Valve Trim Material Selection: Hardfacing, Stellite, and Tungsten Carbide
Trim material decides how long a control valve holds its characteristic. This guide compares hardfacing, tungsten carbide, 17-4PH, and surface-hardened 316 against the ways trim actually fails.
Technical Guides
Blowout-Proof Stem Design: What the Standards Require and Why It Matters
A blowout-proof stem is a small design detail with a large safety consequence. This article explains the mechanism, the standards, and what to confirm before buying.
Technical Guides
Strainer Selection Guide: Y-Type, Basket, and Conical Designs Compared
Y-type, basket, and conical strainers look like simple accessories, but the wrong one costs pressure drop and pump damage. This guide matches design to duty.
Technical Guides
Butterfly Valve vs Ball Valve for Isolation: A Practical Decision Framework
Butterfly and ball valves both isolate with a quarter turn, yet they behave very differently at the flange. This framework helps engineers pick the right one for the duty.