What is Travel Stop in Control Valve?
A travel stop in the control valve is used as a mechanical limiter for stem travel. In fact, these travel stops are used to limit the stem travel at certain...
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Control Valves
Face to Face Dimension of Control Valve
Typically the face to face dimension requirement of the control valve is specified in the control valve specification. It defines the standards and codes to be used to standardize the...
Butterfly Valves – Concentric, Double-offset, and Triple-offset
The butterfly valve is a quarter-turn valve that can be used as an on-off valve or throttling valve. There are two types of butterfly valve, a concentric and an eccentric...
How-to do Control Valve Calibration?
Control Valves are meant to control the process parameters namely Pressure, Flow, Level and Temperature. Control Valve is the final control element in any closed-loop control. Based on their application...
Difference between RTJ and T&G Flange Facings
I searched many sources to know the difference between Tongue and Groove Flange and RTJ flange, both looked same as per construction. RTJ and T&G Flange Mostly (not always) we go...
When to choose Full Bore Valve or Reduced Bore Valve ?
A brief explanation as this article is more focused on the section of Full or Reduced bore type of valves. Full bore Valve :- The I.D of the Valve is...
Difference between PCV and PRV
PCV – It stands for Pressure Control Valve PRV – It stands for Pressure Relief Valve In one line :- The difference is the Liquid stays in System after PCV...
Valve Materials Comparison Notes
During vendor bids evaluation of the valve package, usually we will face the problem of material review from the Vendor offer. Let’s say we require a valve with A182 F53...
Difference between BDV and PSV
Blow down Valves (BDV) is a part of safety system of the unit or a section of unit. The purpose of PSV is to release over-pressure automatically when operator is...
Difference between Blowdown Valve (BDV) and Shutdown Valve (SDV) ?
Shutdown Valve (SDV) is an emergency shutdown valve in process control that work as safety device when there is emergency. Blowdown Valve (BDV) is also used as a safety integrity...