gate valve
6 in-depth engineering guides on gate valve — specification, selection, testing and procurement.
Everything on gate valve
Vajra's engineering team has published 6 technical guides covering gate valve for industrial valve selection, specification, testing and procurement. Browse the full set below.
Valve Maintenance for Turnaround & Shutdown (TAR) - Selection, Inspection & Replacement
Plant turnarounds are the primary window for valve inspection and replacement. This guide covers what to inspect, when to replace vs. repair, and how to plan valve procurement for a major TAR.
Valve Selection for Ammonia Service - Anhydrous NH₃, Refrigeration & Fertiliser
Anhydrous ammonia is one of the most widely handled industrial chemicals - and one of the most unforgiving. This guide covers valve material compatibility, pressure ratings, and certifications for ammonia service.
Gate Valve vs Ball Valve - How to Choose the Right Isolation Valve
Gate valves and ball valves both provide on/off isolation, but each excels in specific size ranges, pressure classes, and service conditions. Here's a definitive selection guide.
Bellows Seal Valve Guide: Eliminating Fugitive Emissions to ISO 15848 Class A
Bellows seal valves use a welded metal bellows to eliminate stem packing as the primary seal, achieving ISO 15848 Class A fugitive emission levels (≤50 ppmv) mandated by EU IED and EPA Method 21.
Gate Valve Types: Wedge, Slab, Knife Gate, OS&Y and More
Gate valves come in dozens of configurations - solid wedge, flexible wedge, slab gate, through-conduit, knife gate, rising stem, non-rising stem. Choosing the wrong type for your service leads to premature wear, seat leakage, or operational problems. This guide covers every gate valve type with applications and selection criteria.
Gate Valve vs Globe Valve - Which to Use for Isolation and Which for Control?
Gate valves and globe valves are both multi-turn valves and are often confused - but they serve fundamentally different purposes in a piping system. Gate valves are designed for full-open or full-closed isolation with minimum pressure drop. Globe valves are designed for throttling and flow regulation, accepting higher pressure drop in return for controllable flow. This guide explains when to use each.
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