Control Valves Basics 1.What is CV? Answer:- A. Thanks in Advance.  For flanged valve bodies, finish tightening them in which order? A double seat valve is used where it will become impractical to provide sufficient force to close a conventional single seat valve. 6. Is the velocity of a fluid in a control valve … Q23. Diaphragm Valve. Pilot-operated check valves have _____flow in one direction. Control System Interview Questions. The wear due to the contact friction is _____________ on the disc of a globe valve.  Name any two types of valve end connections. Control valves a. This article is about Control valves Question answers for Interview and focusing to the engineers, technicians and supervisors.You will find lot of documents related to this article. Answer : The control valve, commonly named the final control element of control contains a pneumatic device that converts the control signal from the controller in action, regulating the flow. Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams. What are the types of check valves? Answer : B. E-mail:- aws.cwi.training@gmail.com, View AWS.CWI.Training.Course’s profile on Facebook, Interview Questions Answers Related To Valves: –, Basics of Valves Interview Questions & Answers Instrumentation Tools, hydraulics and pneumatics interview questions, Instrumentation engineering interview questions and answers, Interview Questions : Control Valve technician, Interview Questions on Control Valves Instrumentation Tools, interview questions on hydraulics and pneumatics pdf, Questions & Answers on Types of Valves Instrumentation Tools, Searches related to Interview Questions Answers Related To Valves, Short Interview Question Answers on Expansion Valves. Non-Return. Must fail closed b. (In Point of Valves) Top 50 Boiler Information Booster Question Answers. Check valves are divided into two types based on check mechanism as: –. Control Valve Questions and Answers : Read the Top 100 Control Valves Interview Questions and Answers with … By comparing this calculated value with the Cv capacities of different valves … Define Control system. Q17. If possible a gate valve _____________ be used for throttling, Q8. Q30. What are different types of control valves? __________ valve offers much more resistance to flow than __________ valve. Today we are discussed about the” top 50 boiler information booster question answers “ these question is very helpful for those who worked in power plant as a boiler first class , boiler operator , boiler fireman , boiler operation engineering , energy manager or as a energy auditor these question answers … Mainly the check valves are self-operated and all other valve types comes under operated valves. Piston valve. Air to close 2. A control valve is also required in each automatic source of supply in accordance with Section 8.16.1.1.1.2. The commonly used control valves can be defined as follows: a. Also Read: More Control Valves Questions & Answers. Swing check valve. This test comprises of 50 questions on Hydraulics and Pneumatics. The Control Valve Handbook has been a primary reference since its first printing in 1965. Review Questions answer key Copies of the module examination (for paper-based exams) and Performance Profile Sheets Globe valve Gate or knife valve Ball valve Plug valve Butterfly valve Needle valve Pneumatic or electric valve actuator Pneumatic, analog, or smart valve positioner Example globe valves with bridgewall markings Example valves … Valves that perform duties other than the two-way isolation, control and check are called special Purpose valves. Depending on body: Depending on body there are 4 types of control valves 1. 8. To control means to regulate, to direct or to command. This interactive well control quiz contains 25 questions related to Tricky Questions and Well Control Equipment.Additionally, this content is based on both IWCF and IADC well control. Q10. Valves are classified based on end connection as: –. Show the packing material in the figure. 7. A control valve is a valve used to control fluid flow by varying the size of the flow passage as directed by a signal from a controller. The purpose of valve packing is … Butterfly valve. Q13. Check valves are divided into two types based on check mechanism as:-A. Instrumentation Interview Questions and Answers will guide us now that Instrumentation is the branch of science that deals with measurement and control. increased controlled decreased 3. Do not forget to subscribe our You tube channel also. End connection means arrangement of attachment of the valve with the equipment or the piping. CONTROL SYSTEMS Objective Questions and Answers pdf free download,mcqs,lab viva,online quiz bits test electrical engineering interview questions. Often your memory will be jogged or something within one question will provide a clue to the answer in another question. Valve technician interview questions & answers. Q16. It helps keep the process variable close to the desired point. Please! Q21. control valve is better described as "adjustable" since no movement takes place while the valve is operating. Just navigate our website www.paktechpoint.com and find more articles. B.  What is the purpose of actuator in a  control valve ? Control valves are an increasingly vital component of modern manufacturing around the world. Lift check valve. Gate valve. What are glandless piston valves?  Identify the flow characteristics (equal percentage, quick opening, linear),     1.________ quick opening _____________,     3._______ equal percentage ______________, Q18. Color of a fail closed valve in Saudi kayan, Q6. Q15. The Kv value is the metric equivalent in m3/hr with 1 bar pressure drop. Globe valves single or double seated 2. What will be the new flow rate if the flow is 20 gpm and the valve is opened 1 % ? What is normally open? control valve after receiving a signal from a controller High rangeability allows a valve to control flow from large to small flows Rangeability is affected by three factors: 1. When a liquid enters the valve and the static pressure at the vena contracta drops to, less than  the fluid vapor pressure (PV), and the valve outlet pressure is also less than the fluid vapor pressure, the condition is called. Butterfly valves 4. The valves are required so that the check valve can be isolated and serviced. Using published formulae it is possible to calculate the Cv required for an application. When the number of elements connected performs a specific function then the group of elements is said to constitute a system or interconnection of various … Q24. PLEASE SUBSCRIBE OUR PAKTECHPOINT YOUTUBE CHANNEL, Pingback: Pressure drop calculation in valve (Instrumentation & Control) - PAKTECHPOINT, Pingback: Measurement and calculation the position of control valve - PAKTECHPOINT, Pingback: VALVES EXPLANATION AND ITS TYPES - PAKTECHPOINT, Pingback: Surge and Compressor Choke in Compressor Control System - PAKTECHPOINT, Q1. With measurement and control follow this blog and receive notifications of new posts email... By System also Read: more control valves 1 of valves GATE IES. Has been a primary reference since its first printing in 1965 value is the metric equivalent m3/hr. The wear due to the arrows the consequential control of flow rate the. Varying the brightness of a music System b, IES, PSUs, NET/SET/JRF, UPSC and other exams! 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