When to Automate a Manual Valve: Build the Decision Record
A seven-check decision record for deciding whether to automate a manual valve without assuming generic payback.
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Valves4You Ltd Blog
Valve, actuator and flow-control guidance from the original Valves4You Ltd article library.
Double-Flanged Butterfly Valves: Five Project Interfaces to Confirm
Five project interfaces to confirm before specifying a double-flanged butterfly valve: installed length, flanges, alignment, support and duty.
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Actuator Sizing: Match the Whole Valve Torque Envelope
A point-by-point method for matching valve break, running and seating torque with actuator output while retaining the stem-torque upper bound.
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Valve Seat Failure: Build the Evidence Record Before Diagnosis
A five-part evidence record for valve seat failures, covering exact identity, damage location, duty history, mating surfaces and installation changes.
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NAMUR Solenoids and Switchboxes: Five Package Checks
Five interface checks for matching a pneumatic actuator, NAMUR solenoid and switchbox without assuming whole-package compatibility.
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Replacing an Obsolete Valve: Build an Equivalence Matrix
A four-part equivalence matrix for documenting duty, materials, interfaces and controls before replacing an obsolete valve.
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EPDM, NBR, FKM or PTFE? Five Inputs Before You Shortlist a Valve Seat
A five-input method for screening EPDM, NBR, FKM and PTFE valve seats before exact compound and valve-model confirmation.
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Valve RFQ Baseline: How to Get Comparable Quotations
A practical method for issuing one valve RFQ baseline, recording assumptions and comparing supplier deviations against the same scope.
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Knife Gate or Pinch Valve for Slurry? A Duty-by-Duty Comparison
A duty-led comparison of slurry knife gate and pneumatic pinch valves, covering operating principle, utilities, cycling behaviour and maintenance evidence.
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Wafer or Lugged Butterfly Valve? The Practical Differences for Maintenance Teams
A practical maintenance guide to wafer and lugged butterfly-valve mounting, one-sided removal, end-of-line limits and replacement checks.
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