# Valves **URL:** https://forumautomation.com/c/field-instrumentation/valves/42.md?page=1 [Latest](https://forumautomation.com/latest.md) · [Categories](https://forumautomation.com/categories.md) · [Tags](https://forumautomation.com/tags.md) **Page:** 2 --- ## [What is valve stem packing?](https://forumautomation.com/t/what-is-valve-stem-packing/2612)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 9, 2017, 8:15pm UTC](https://forumautomation.com/t/what-is-valve-stem-packing/2612 "2017-11-09T20:15:38Z")
The valve packing is an essential component of valves. Which is covered around the valve stem. The purpose of valve packing is to prevent leakage. In a typical valve, the gland follower is tightened until there is no l… --- ## [What is Poppet valve and How it works?](https://forumautomation.com/t/what-is-poppet-valve-and-how-it-works/10492)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [June 22, 2022, 4:46am UTC](https://forumautomation.com/t/what-is-poppet-valve-and-how-it-works/10492 "2022-06-22T04:46:56Z")
What is a Poppet valve? A poppet valve (also known as a mushroom valve) is a type of valve that controls the amount and timing of gas or vapour flow into an engine. It is made up of a hole or open-ended chamber, whic… --- ## [Valve Pressure test procedure](https://forumautomation.com/t/valve-pressure-test-procedure/2545)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [October 31, 2017, 7:04pm UTC](https://forumautomation.com/t/valve-pressure-test-procedure/2545 "2017-10-31T19:04:52Z")
Requirments: Required protective coating such as paint, which may mask surface defects, shall not be applied to any surface before inspection or pressure testing. The valve shall be essentially free from the tra… --- ## [Hydraulic Servo valves - basic types and operation](https://forumautomation.com/t/hydraulic-servo-valves-basic-types-and-operation/4209)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [July 24, 2018, 2:59pm UTC](https://forumautomation.com/t/hydraulic-servo-valves-basic-types-and-operation/4209 "2018-07-24T14:59:52Z")
The electro-hydraulic servo valve connects the electronic and hydro-mechanical portions of a hydraulic system. The hydraulic servo valves work on electrical signal input, which is then converted into a proportional mecha… --- ## [Parts of a Check Valve](https://forumautomation.com/t/parts-of-a-check-valve/10559)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [July 30, 2022, 4:31am UTC](https://forumautomation.com/t/parts-of-a-check-valve/10559 "2022-07-30T04:31:37Z")
What is a Check Valve? A check valve is a valve that is used to prevent backflow in a pipe system. A non-return valve, or NRV, is another name for it. The pressure of the fluid moving via a pipeline opens the valve, whe… --- ## [What is Control valve? Purpose of a control valve in a process loop](https://forumautomation.com/t/what-is-control-valve-purpose-of-a-control-valve-in-a-process-loop/4348)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [August 8, 2018, 7:18pm UTC](https://forumautomation.com/t/what-is-control-valve-purpose-of-a-control-valve-in-a-process-loop/4348 "2018-08-08T19:18:55Z")
What is Control valve? A control valve is the final control element that is used to regulate or restrict the fluid flow through a flow channel. There are “automated” and “Control” valve, the distinction between the valve… --- ## [Working of Two stage pressure regulator valve](https://forumautomation.com/t/working-of-two-stage-pressure-regulator-valve/2953)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [January 11, 2018, 7:36pm UTC](https://forumautomation.com/t/working-of-two-stage-pressure-regulator-valve/2953 "2018-01-11T19:36:11Z")
What are pressure regulators? The function of pressure regulator valve is to reduce the pressure and keep the pressure as constant as possible while the inlet pressure and flow may vary. Two-stage pressure Regulator … --- ## [What is leakage class rating (Valve Design)?](https://forumautomation.com/t/what-is-leakage-class-rating-valve-design/1283)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [August 28, 2016, 12:22am UTC](https://forumautomation.com/t/what-is-leakage-class-rating-valve-design/1283 "2016-08-28T00:22:35Z")
There are 6 leakage classes. Most common are class 4 and Class 6. Class 4 is intended for single ported,metal to metal seats.Leakage rate is limited to 0.01 of rated valve flow capacity. Class 6 is intended for resili… --- ## [Basics of Needle valves & applications](https://forumautomation.com/t/basics-of-needle-valves-applications/3178)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [February 23, 2018, 2:57pm UTC](https://forumautomation.com/t/basics-of-needle-valves-applications/3178 "2018-02-23T14:57:53Z")
Needle valves are used to control the flow precisely. In the needle valve, the long, tapered, needle-like point on the end of the valve stem acts as the disk in usual valves, which perfectly fits into the seats.This arra… --- ## [Parts of a Globe valve](https://forumautomation.com/t/parts-of-a-globe-valve/10558)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [July 29, 2022, 8:14am UTC](https://forumautomation.com/t/parts-of-a-globe-valve/10558 "2022-07-29T08:14:49Z")
What is Globe valve? A globe valve is a linear motion valve that is used to stop, start, or regulate the flow of fluid. The globe valve disc can be totally withdrawn from the fluid or it can completely close or halt th… --- ## [Types of valve positioners - pneumatic, electro-pneumatic, double acting positioners](https://forumautomation.com/t/types-of-valve-positioners-pneumatic-electro-pneumatic-double-acting-positioners/4096)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [July 13, 2018, 4:53pm UTC](https://forumautomation.com/t/types-of-valve-positioners-pneumatic-electro-pneumatic-double-acting-positioners/4096 "2018-07-13T16:53:56Z")
What is the valve positioner? A valve positioner is a proportional controller that adjusts the output to the actuator based on control system input and feedback from the valve stem position. Pneumatic and electro-pneumat… --- ## [Hydraulic Control valve speed controlling circuits](https://forumautomation.com/t/hydraulic-control-valve-speed-controlling-circuits/3722)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [May 29, 2018, 2:14pm UTC](https://forumautomation.com/t/hydraulic-control-valve-speed-controlling-circuits/3722 "2018-05-29T14:14:27Z")
In hydraulic operations, it is necessary to control the speed of the actuator so as to control the force, power, timing and other factors of the operation. Actuator speed control is achieved by controlling the rate of fl… --- ## [What is Moog valve?](https://forumautomation.com/t/what-is-moog-valve/7418)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 13, 2019, 6:31pm UTC](https://forumautomation.com/t/what-is-moog-valve/7418 "2019-11-13T18:31:17Z")
Moog valves are patented control valve by Bill Moog. It included many principles of hydraulic control developed over the centuries. However, it was his packaging and refinement that made such a powerful component the Moo… --- ## [Different types of classification of valves](https://forumautomation.com/t/different-types-of-classification-of-valves/4224)
**Author:** [@areejsidhik](https://forumautomation.com/u/areejsidhik)\ **Replies:** 1\ **Last updated:** [April 24, 2023, 10:26am UTC](https://forumautomation.com/t/different-types-of-classification-of-valves/4224 "2023-04-24T10:26:18Z")
In order to simplify the selection and specification of a device with such a broad definition, valves are traditionally classified according to one or more of the following factors Classifying Valves according to Fun… --- ## [What is Bench set?](https://forumautomation.com/t/what-is-bench-set/4361)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [August 10, 2018, 12:31pm UTC](https://forumautomation.com/t/what-is-bench-set/4361 "2018-08-10T12:31:42Z")
What is the bench set? The Bench set is determined by the spring rate of the actuator failsafe range spring(s). It is expressed for a given actuator (with its particular diaphragm area) by the actuator’s pneumatic “LOAD”… --- ## [Parts of a Choke valve](https://forumautomation.com/t/parts-of-a-choke-valve/10561)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [August 1, 2022, 5:32am UTC](https://forumautomation.com/t/parts-of-a-choke-valve/10561 "2022-08-01T05:32:00Z")
What is a choke valve? Choke valves are used to control flow rate and reduce pressure for downstream processing of generated fluids. Effective chokes lower the possibility of downstream equipment damage, allow for a lon… --- ## [Penstock valve basics](https://forumautomation.com/t/penstock-valve-basics/3251)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [March 8, 2018, 6:04pm UTC](https://forumautomation.com/t/penstock-valve-basics/3251 "2018-03-08T18:04:07Z")
A penstock is a single-faced valve consisting of an open frame and a door. This form of valve is normally located in tanks or channels as a means of controlling flow into a pipe. There are different types of penstock a… --- ## [Plug valves - Types of Plug valves](https://forumautomation.com/t/plug-valves-types-of-plug-valves/4441)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [August 22, 2018, 5:57pm UTC](https://forumautomation.com/t/plug-valves-types-of-plug-valves/4441 "2018-08-22T17:57:12Z")
Plug valve: The plug valve has the shape of a hollow cylinder valve to regulate flow. When the axis of the cavity is parallel to the axis of fluid flow, the valve is fully open. If the axis of the cavity is perpendicu… --- ## [Corrective maintenance for Valves](https://forumautomation.com/t/corrective-maintenance-for-valves/4356)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 1\ **Last updated:** [January 21, 2020, 5:00pm UTC](https://forumautomation.com/t/corrective-maintenance-for-valves/4356 "2020-01-21T17:00:53Z")
Corrective maintenance, known as a breakdown or run to failure maintenance. Maintenance is only done after the equipment or machine is damaged. Corrective Maintenance is a maintenance activity carried out to overcome … --- ## [PLC motor control program](https://forumautomation.com/t/plc-motor-control-program/5944)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [February 16, 2019, 5:14pm UTC](https://forumautomation.com/t/plc-motor-control-program/5944 "2019-02-16T17:14:30Z")
Motors used in industrial sectors are controlled through PLC, SCADA or other automation controller systems. Here we are looking to the PLC programming of motor control, before that we have to check the hardware approach. … --- ## [What is the difference between linear characteristics and equal percentage valve?](https://forumautomation.com/t/what-is-the-difference-between-linear-characteristics-and-equal-percentage-valve/2198)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [August 13, 2017, 11:14pm UTC](https://forumautomation.com/t/what-is-the-difference-between-linear-characteristics-and-equal-percentage-valve/2198 "2017-08-13T23:14:19Z")
Linear Characteristics The linear characteristics valve plug is shaped so that the flow rate is directly proportional to the valve lift,at a constant differential pressure.A linear valve achieve this by having a linear … --- ## [Pressure relief valves](https://forumautomation.com/t/pressure-relief-valves/2354)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [September 28, 2017, 9:41am UTC](https://forumautomation.com/t/pressure-relief-valves/2354 "2017-09-28T09:41:43Z")
The pressure relief valve is an important type of safety valve. A pressure relief valve protects motors, pumps and actuators from becoming damaged from high pressure. When the pressure inside such equipment increases … --- ## [What is valve Handwheels? Types of valve handwheels](https://forumautomation.com/t/what-is-valve-handwheels-types-of-valve-handwheels/7061)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [August 30, 2019, 2:56pm UTC](https://forumautomation.com/t/what-is-valve-handwheels-types-of-valve-handwheels/7061 "2019-08-30T14:56:30Z")
What is Handwheels? Handwheels are most common valve actuator. Handwheels are used to actuate control valve manually where automatic controlling is out of option and also in many cases, handwheels are used to overrid… --- ## [Valve fail safe modes](https://forumautomation.com/t/valve-fail-safe-modes/3031)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [January 25, 2018, 9:30pm UTC](https://forumautomation.com/t/valve-fail-safe-modes/3031 "2018-01-25T21:30:24Z")
It is an important consideration in many systems is the position of the actuators when there is a loss of power, i.e., will chemicals or the fuel to the heaters continue to flow or will a total system shut down occur?. O… --- ## [What are Spring return & Non-Spring return actuator?](https://forumautomation.com/t/what-are-spring-return-non-spring-return-actuator/6548)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [June 13, 2019, 6:11pm UTC](https://forumautomation.com/t/what-are-spring-return-non-spring-return-actuator/6548 "2019-06-13T18:11:25Z")
Actuators can be categorised based on what happens when power is removed, which are Spring return & Non-Spring return actuators. Non-spring return actuator: These are actuators, When the electricity or air pressure is… --- ## [Control valve safety requirements](https://forumautomation.com/t/control-valve-safety-requirements/5327)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 29, 2018, 11:56am UTC](https://forumautomation.com/t/control-valve-safety-requirements/5327 "2018-11-29T11:56:09Z")
Control valves are flow control instruments which deals with the high pressure in process industry. Thus valves should be fail-safe to make the entire process safe. In principle, fail-safe will be needed when the temper… --- ## [What is a Piston Valve and How does it work?](https://forumautomation.com/t/what-is-a-piston-valve-and-how-does-it-work/10515)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [July 7, 2022, 5:07am UTC](https://forumautomation.com/t/what-is-a-piston-valve-and-how-does-it-work/10515 "2022-07-07T05:07:39Z")
A Piston Valve is a device that uses the linear motion of a piston within a chamber or cylinder to control the flow of fluid through a tube or pipe. Most of the time, these valves are used with fluids that cause exces… --- ## [Parts of a Ball valve](https://forumautomation.com/t/parts-of-a-ball-valve/10553)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [July 27, 2022, 8:27am UTC](https://forumautomation.com/t/parts-of-a-ball-valve/10553 "2022-07-27T08:27:07Z")
What is Ball Valve? A ball valve is a type of plug that has a ball-shaped closing member. The flow of liquid or gas is controlled by a pivoting ball fixed in the center of the valve controls. The pivoting ball is cal… --- ## [What are the components of Control Valve?](https://forumautomation.com/t/what-are-the-components-of-control-valve/956)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [April 3, 2016, 7:56pm UTC](https://forumautomation.com/t/what-are-the-components-of-control-valve/956 "2016-04-03T19:56:01Z")
Components of Control Valve Actuator Body Trim Diaphragm Diaphragm plate Actuator stem Actuator spring Seat Travel indicator Valve stem Gaskets Yoke Hand wheel --- ## [Diaphragm valves basics](https://forumautomation.com/t/diaphragm-valves-basics/3213)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [February 28, 2018, 8:12pm UTC](https://forumautomation.com/t/diaphragm-valves-basics/3213 "2018-02-28T20:12:18Z")
A diaphragm valve is a linear motion valve that is used to start, regulate, and stop fluid flow. The name is derived from its flexible disk, which mates with a seat located in the open area at the top of the valve body t… --- ## [What are BlowDown valves?](https://forumautomation.com/t/what-are-blowdown-valves/6928)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [August 6, 2019, 7:06pm UTC](https://forumautomation.com/t/what-are-blowdown-valves/6928 "2019-08-06T19:06:08Z")
What is Blow Down Valve? The open position of the blowdown valves is used for the operation. The primary role of the blowdown valve is primarily to regulate a steam/fluid constant flow under elevated differential pressu… --- ## [What is Pinch valve?](https://forumautomation.com/t/what-is-pinch-valve/10514)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [July 6, 2022, 4:17am UTC](https://forumautomation.com/t/what-is-pinch-valve/10514 "2022-07-06T04:17:38Z")
Pinch valves are similar to diaphragm valves in that the body has sleeves that can be squeezed to control or halt the flow. A pinch valve is a flex-body valve with a flexible tube that may be mechanically pulled toge… --- ## [Direct control Valve Classification](https://forumautomation.com/t/direct-control-valve-classification/1136)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [July 2, 2016, 9:47pm UTC](https://forumautomation.com/t/direct-control-valve-classification/1136 "2016-07-02T21:47:32Z")
Valves Valves are defined as device to control or regulate the direction,flow and pressure of a fluid Valve Classification Valve available for pneumatic control can be classified into four principal groups according t… --- ## [Gland packing in control valve](https://forumautomation.com/t/gland-packing-in-control-valve/118)
**Author:** [@instrumen](https://forumautomation.com/u/instrumen)\ **Replies:** 1\ **Last updated:** [September 23, 2017, 9:03am UTC](https://forumautomation.com/t/gland-packing-in-control-valve/118 "2017-09-23T09:03:20Z")
A sealing system in the valve body which prevents the process fluid coming out through the valve stem. Commonly used gland packing in PDO are Teflon, Graphite Asbestos…etc --- ## [Gate Valve Parts](https://forumautomation.com/t/gate-valve-parts/10549)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [July 25, 2022, 5:04am UTC](https://forumautomation.com/t/gate-valve-parts/10549 "2022-07-25T05:04:23Z")
What is a Gate valve? Gate valves are used to stop the flow of fluid by putting a rectangular gate or wedge into its passage. Gate valves take up extremely little space along the pipe axis and barely hinder fluid flow w… --- ## [How to identify Control valve leakage problem for various valves?](https://forumautomation.com/t/how-to-identify-control-valve-leakage-problem-for-various-valves/6984)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [August 17, 2019, 6:29pm UTC](https://forumautomation.com/t/how-to-identify-control-valve-leakage-problem-for-various-valves/6984 "2019-08-17T18:29:50Z")
Problems will arise to control valves in the course of time, because of the regular use. Of course, there will be problems that may be repaired without shutting down the system if it is not harmful. If in a dangerous pos… --- ## [Classification of Valves used in Piping](https://forumautomation.com/t/classification-of-valves-used-in-piping/4822)
**Author:** [@rajeena](https://forumautomation.com/u/rajeena)\ **Replies:** 0\ **Last updated:** [October 2, 2018, 3:22pm UTC](https://forumautomation.com/t/classification-of-valves-used-in-piping/4822 "2018-10-02T15:22:22Z")
Classification of Valves used in Piping Valves are mechanical devices that are used to direct, start , stop, mix, regulate the flow, pressure, level, temperature of process fulids. Classification of valves used in pipin… --- ## [What is Partial Valve Stroke Testing (PVST)?](https://forumautomation.com/t/what-is-partial-valve-stroke-testing-pvst/5971)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [February 21, 2019, 5:44pm UTC](https://forumautomation.com/t/what-is-partial-valve-stroke-testing-pvst/5971 "2019-02-21T17:44:01Z")
These are systems that are used to provide safety, such as Safety Instrumented System (SIS). The objective of SIS is to reduce the damage, SIS acts only when the error or damage has happened. The SIS does not increase t… --- ## [Pressure test for Butterfly Valve](https://forumautomation.com/t/pressure-test-for-butterfly-valve/6946)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [August 9, 2019, 7:31pm UTC](https://forumautomation.com/t/pressure-test-for-butterfly-valve/6946 "2019-08-09T19:31:48Z")
All butterfly valves, completely assembled, should be checked by the supplier in accordance with the accepted standard such as BS-5155 (stress testing) prior to dispatch. Before valves are painted or otherwise extern… --- ## [Can we use a control valve without positioner?](https://forumautomation.com/t/can-we-use-a-control-valve-without-positioner/4584)
**Author:** [@rajeena](https://forumautomation.com/u/rajeena)\ **Replies:** 0\ **Last updated:** [September 7, 2018, 5:28pm UTC](https://forumautomation.com/t/can-we-use-a-control-valve-without-positioner/4584 "2018-09-07T17:28:19Z")
Can we use a control valve without positioner? The purpose of the positioner is to control the stroke of the control valve to maintain the valve in the desired position. The positioned is used in a control valve to contr… --- ## [Instrumentation : Selection of valve](https://forumautomation.com/t/instrumentation-selection-of-valve/371)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 1\ **Last updated:** [April 5, 2015, 4:40am UTC](https://forumautomation.com/t/instrumentation-selection-of-valve/371 "2015-04-05T04:40:37Z")
SELECTING A VALVE TYPE Can classify the valve according to Stroke / Valve travel Equal Percentage: equal increments of valve travel produce an equal percentage in flow change Linear: valve flow is directly propo… --- ## [Single seated balanced trim](https://forumautomation.com/t/single-seated-balanced-trim/109)
**Author:** [@instrumen](https://forumautomation.com/u/instrumen)\ **Replies:** 1\ **Last updated:** [September 23, 2017, 8:27am UTC](https://forumautomation.com/t/single-seated-balanced-trim/109 "2017-09-23T08:27:04Z")
It is a trim having a single seat and balance holes on its plug. A single seated balanced trim is used in a process line where the DP across the valve is high. These kind of trims are useful in reducing the vibration on … --- ## [Pressure Regulation valve system working | Common uses of Pressure Regulation](https://forumautomation.com/t/pressure-regulation-valve-system-working-common-uses-of-pressure-regulation/2365)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [October 1, 2017, 11:30am UTC](https://forumautomation.com/t/pressure-regulation-valve-system-working-common-uses-of-pressure-regulation/2365 "2017-10-01T11:30:27Z")
Working: Pressure regulation valves are used to regulate or maintain pressure of flowing fluid in a supply channel with in a range of pressure values. Pressure regulator valve consist of main valve and a pilot valve… --- ## [Parts of a Butterfly valve](https://forumautomation.com/t/parts-of-a-butterfly-valve/10552)
**Author:** [@Ajmal\_ismail](https://forumautomation.com/u/Ajmal_ismail)\ **Replies:** 0\ **Last updated:** [July 26, 2022, 5:25am UTC](https://forumautomation.com/t/parts-of-a-butterfly-valve/10552 "2022-07-26T05:25:56Z")
What is a Butterfly valve? Butterfly valves are quarter-turn rotational motion valves used to stop, regulate, and start flow. Butterfly valves are simple and quick to open. A 90° rotation of the handle closes or opens t… --- ## [What is Valve sequencing?](https://forumautomation.com/t/what-is-valve-sequencing/2775)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [December 5, 2017, 9:48pm UTC](https://forumautomation.com/t/what-is-valve-sequencing/2775 "2017-12-05T21:48:44Z")
Sequencing of the two valves (i.e. making each one respond differently to the same air pressure signal), therefore, was a matter of setting each valve to a different bench-set pressure range. It should be understood, how… --- ## [How to set bench set of control valve](https://forumautomation.com/t/how-to-set-bench-set-of-control-valve/4367)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [August 11, 2018, 6:43pm UTC](https://forumautomation.com/t/how-to-set-bench-set-of-control-valve/4367 "2018-08-11T18:43:45Z")
Bench set is the nameplate specification that is used to verify proper actuator operation. Bench set is expressed as the pressure range from the start of the actuator stroke to the valve’s rated travel. When conducting … --- ## [9 Reasons to use a Valve positioner](https://forumautomation.com/t/9-reasons-to-use-a-valve-positioner/7978)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [March 3, 2020, 6:22pm UTC](https://forumautomation.com/t/9-reasons-to-use-a-valve-positioner/7978 "2020-03-03T18:22:28Z")
What is a valve positioner? Valve positioner is a control device designed to impart sensitivity to the valve and to ensure correct positioning as a feedback signal dictates. It derives from a transmitter an electrica… --- ## [What is Dome valve?, features, Principle](https://forumautomation.com/t/what-is-dome-valve-features-principle/5796)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [January 25, 2019, 1:51pm UTC](https://forumautomation.com/t/what-is-dome-valve-features-principle/5796 "2019-01-25T13:51:07Z")
What are Dome valves? Dome valves are high-pressure valves, usually used to control the flow of solid or abrasive materials. Dome valves have the advantages of tight pressure to open and close the valve. Pneumatic sys… --- ## [Solenoid Actuated Valves / Solenoid actuator](https://forumautomation.com/t/solenoid-actuated-valves-solenoid-actuator/3177)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [February 22, 2018, 5:35pm UTC](https://forumautomation.com/t/solenoid-actuated-valves-solenoid-actuator/3177 "2018-02-22T17:35:21Z")
What are valve actuators? Actuators are the devices which drive the valve stem. There are different types of valve actuators used in valves according to different purposes and based on actuating principle. Solenoid a… --- ## [What are the types electrical actuators?](https://forumautomation.com/t/what-are-the-types-electrical-actuators/2622)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 10, 2017, 8:17pm UTC](https://forumautomation.com/t/what-are-the-types-electrical-actuators/2622 "2017-11-10T20:17:35Z")
There are commonly two types of electrical actuators in control valve system. Solenoid actuated valve: This on/off valve is used to remotely open or shut a flow line. These valves normally come in small sizes. It i… [Previous page](https://forumautomation.com/c/field-instrumentation/valves/42.md?per_page=50) [Next page](https://forumautomation.com/c/field-instrumentation/valves/42.md?page=2&per_page=50)