5 min read
Sight Flow Indicators: They Measure Nothing, Yet Tell You Plenty
A sight flow indicator gives no flow rate; it is not an instrument. It is, however, the fastest way to confirm by eye that a pump...
Installation & maintenance articles
Technical articles on Installation & maintenance: valve and expansion joint selection, application and installation notes.
Articles
5 min read
Check Valve Selection and Water Hammer
A check valve stops reverse flow; the real question is how quickly it stops it. A slow-closing check valve becomes the source of w...
6 min read
Reach Rods and Universal Joints: Turning a Valve You Cannot Reach
A valve at the bottom of a tank or down in the bilge can be turned from the deck. The difficulty is not turning it, but the backla...
6 min read
Self-Closing Valves: Spring or Weight?
In a self-closing valve the closing force comes either from a spring or from a weight. The two differ in installation freedom and,...
6 min read
Fitting Selection for Marine Applications
Three things stress a fitting on board: saltwater, continuous vibration and limited maintenance access. Selection follows all thre...
5 min read
Two-Piece, Three-Piece, Monoblock: Ball Valve Bodies and Maintenance
How many pieces a ball valve body has is not a manufacturing detail — it decides whether servicing it stops the line.
5 min read
Flange Gaskets and Bolt Sequence: What Actually Decides Sealing
Sealing in a flanged joint is decided less by the gasket than by how evenly bolt load is spread around it. Sequence and staging ma...
5 min read
Threaded or Flanged? Choosing the Connection on Small-Bore Lines
On small bore, a flange is often needless cost — and occasionally the only right answer. The deciding factor is not size but how o...
5 min read
Strainers: A Cheap Part That Prevents an Expensive Failure
A strainer is one of the cheapest fittings in a line; the equipment it protects is usually the most expensive.
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