5 min read
Pneumatic or Electric Actuator? Decision Criteria and Torque Margin
The first thing deciding actuator type is whether the plant has compressed air. Then come speed, fail position, environment and co...
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Technical Articles
Engineering articles on industrial valve and expansion joint selection, applications, installation and maintenance.
Articles
6 min read
Deck Drains: When the Water Seal Dries, the Protection Is Gone
A floor drain’s grating holds coarse solids; its water seal keeps gas from the discharge line out of the space. The second functio...
6 min read
Expansion Joint End Types: Grooved, Flanged and Weld Neck
The end type decides how fast the line goes up, whether the joint can be removed later, and how many leak points it adds. On a tie...
6 min read
Needle Valves: Fine Control on Gauge, Transmitter and Sample Lines
A needle valve is not there to carry flow but to protect an instrument and isolate it. The tapered stem’s many turns make that pos...
6 min read
Gate Valves and DIN 3216, 3225, 3204: What the Number Actually Specifies
The DIN number on a gate valve is not a quality grade but a description of construction and face-to-face length. That is why a rep...
5 min read
Limit Switch Boxes: Knowing the Valve Really Closed
Sending a command is not the same as the valve reaching that position. A limit switch box closes that gap — but only if its cams a...
6 min read
Foot Valves and Well Check Valves: Keeping a Pump Primed
If the suction line drains when the pump stops, every start becomes a fresh priming attempt. A foot valve prevents that — but when...
6 min read
Installing Expansion Joints: Anchors, Guides and Commissioning
A correctly selected joint still dies in a few seasons if the support scheme is wrong. What directs movement into the joint is not...
5 min read
Solenoid Valves: Which Position Should It Fail To?
Normally closed or normally open is one line in a datasheet, but the answer is a safety decision. When the power goes, the valve s...
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