Winstrone Automation

20/07/2026

How do you calibrate a DP transmitter with a 5-valve manifold?

It becomes much easier when you understand the correct valve sequence.

This step-by-step guide covers process isolation, equalizing, safe venting, connecting the calibrator, applying differential pressure, checking the 4–20 mA output, and safely returning the transmitter to service.

A wrong valve sequence can affect your calibration and, more importantly, compromise safety.

📌 Save this for your next calibration job.

20/07/2026

01/04/2026

⚙️ Control Valve Parts — Explained Simply

A control valve is the final control element in any process loop.
But what actually makes it work so precisely? 👇

🧠 Main Parts of a Control Valve

🔹 Valve Body
➡️ The main casing where fluid flows
➡️ Designed to handle pressure, temperature & flow

🔹 Trim (Heart of the Valve)
➡️ Controls the actual flow inside the valve

Includes:
🔸 Plug
🔸 Seat
🔸 Stem

👉 This is where flow regulation happens

🔹 Actuator
➡️ Provides the force to move the valve

Types:
🔸 Pneumatic
🔸 Electric
🔸 Hydraulic

🔹 Positioner
➡️ Ensures valve moves to the exact position
➡️ Converts signal (4–20 mA / FF / HART) → Valve movement

🔹 Bonnet
➡️ Connects body and stem
➡️ Protects internal components

🔹 Packing
➡️ Prevents leakage along the stem
➡️ Maintains sealing

🔹 Yoke
➡️ Connects actuator to valve body
➡️ Provides structural support

🔹 Accessories
➡️ Enhance performance

👉 MORE DETAILS HERE: https://instrumentationtools.com/basic-parts-control-valves/

Includes:
🔸 I/P Converter
🔸 Limit Switches
🔸 Solenoid Valve
🔸 Air Filter Regulator (AFR)

🎯 Simple Understanding

👉 Signal → Positioner → Actuator → Trim → Flow Control

💡 Control valve = Brain + Muscle + Precision working together

🚀

26/03/2026

26/03/2026