… Push button. PLAY. Load Holding Motion Control valve - Counterbalance valve VBSO-DE-FC2 05.42.06 - X - Y - Z. COUNTERBALANCE, STANDARD POPPET TYPE DIFFERENTIAL AREA COMMON CAVITY VBSN-20A SIZE 20 04.52.25 - X - 58 - Z. Technician B says restricted exhaust can cause the EGR valve position sensor to fail. Designation counterbalance valve, non-vented Design poppet type, free reverse flow, pilot assisted Mounting method screw-in cartridge 7/8-14 UNF-2A or M20x1.5mm Size SAE 10 / NG 8, cavity type C1025 or T-11A Weight 0.62 lbs (0.28 kg) Mounting attitude design B: unrestricted design S,C,T: hanging or horizontal mounting position #6 Spool – Motor Spool – Both Work Ports to Tank in Center Position. So gate valve is closed to discontinue the supply and repairing is carried out. 1-2 What counterbalance valves are used for. This type of valve generally has a wider range of spring adjustment than direct-acting valves and provides better repetitive accuracy. Sort By: Standard Pilot Assisted Load Control Valves. Counterbalance Valve BVD Replaces: 04.08 Series 41 Size NG20, 25 Nominal pressure 350 bar Peak pressure 420 bar for travel drives, winch drives and track drives Contents 2 Design and Safety Instructions 4 Technical Data 4 6 Dimensions, Size 20 8 Dimensions, Size 25 9 Fixing the Counterbalance Valve 10 Port Types 11 Cross-References 11 General Instructions 12 . These are also called as sluice valves. This paper presents the structure and working principle of counterbalance valve used in some hydraulic cranes. Globe valves; These are used in household plumbing. www.gtu-mcq.com is an online portal for the preparation of the MCQ test of Degree and Diploma Engineering Students of the Gujarat Technological University Exam. Pressure adjustment from 1000 to 5000 PSI. Standard poppet type differential area × Counterbalance valves Standard poppet type differential area . A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.. It is actuated by downstream pressure and tends to close as this pressure reaches the valve setting. STUDY. Ideally the inherent valve characteristic should be chosen to give an installed characteristic as close as possible to linear (see inherent vs installed characteristic). Hydraulics & Fluid Machineries MCQ Question with Answer For starting an axial flow pump, its delivery valve should be. Hydraulic Valves & Accessories This page is part of a complete catalog which contains technical and safety data that must be reviewed when selecting a product Each valve is capable of 350 bar (5075 psi) and now available in pre-engineered dual counterbalance HICs. Counterbalance Valves. 3 Tips for operating and maintaining (See Pro course) 5. 1 mark is awarded for each correct answer and 0.25 mark will be deducted for each wrong answer. For other valve types, such as globe, the characteristic can be changed to suit the application. Counterbalance Valve Poppet Type, Direct-Acting Cartridge – 350 bar SBVE-R1 and SBVE-R1/2 Up to 100 l/min Up to 350 bar HYDAC counterbalance valves are direct-acting poppet valves with integrated check valve which enable smooth action in consumers if there are retracting and extending loads. Type 4: Counterbalance Valve External Pilot-Internal Drain Operations Graphic Symbols Descriptions Used to prevent gravitatio- nal falls by generating a pressure on the actuator return side. If primary pressure exceeds the pressure setting, fluid is released to keep the pressure constant. Counterbalance valve, classified by type, is an internally-externally piloted valve because both the pilot pressure and the load pressure tend to open the valve. Also note that counterbalance valves are restrictive type devices and as such are not ideal for low pres-sure applications, such as those below 750 psi. Gate valves; The valve which is used to regulate the water supply or flow in the mains is known as gate valves. Parker counterbalance valves are screw-in type cartridge valves that control the pressure at an actuator controlling its motion. Type VODL/CC counterbalance valves • Double acting • Relief compensated Technical specifications and diagrams are measured with mineral oil of 46 cSt viscosity at 40°C (104°F) temperature. Key Concepts: Terms in this set (36) Technician A says that a low-restriction exhaust system could prevent a back-pressure type vacuum-controlled EGR valve from opening correctly. This course is designed to familiarize participants with the functions performed by various types of valves used in hydraulic systems. We have already discussed the important types of hydraulic valves. • A pressure-reducing valve uses a spring-loaded spool to control the downstream pressure. Created by. Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. VOSLP 38 VOSLP 12 VOSLP 34 VOSLP 100 Nominal flow 35 l/min (9.2 US gpm) 70 l/min (18.5 US gpm) 100 l/min (26.4 US gpm) 180 l/min (47.6 US gpm) Max. The piston type valve consists of a main valve, which uses a piston shaped closing device (or obturator), and an external pilot valve. In load-holding applications, it can be used as a hose-break valve. either type relief valve. #8 Spool – Tandem Spool. Spell. Question 9: In a 5/2 way single solenoids valve what is the actuation mechanism of the position of the valve which is other than solenoid actuated? The check valve allows free flow from the directional valve (port 2) to the load (port 1) while a direct-acting, pilot-assisted relief valve controls flow from port 1 to port 2. The valve body is available with different port sizes and thread types. VODL/CC 38 VODL/CC 12 VODL/CC 34 VODL/CC 100 Nominal flow 35 l/min (9.2 US gpm) 70 l/min (18.5 US gpm) 100 l/min (26.4 US gpm) 180 l/min (47.6 US gpm) Max. 4. When the pressure at 1 exceeds the pressure setting, the valve acts to restrict input flow at 2. 1-2 How counterbalance valves work. Two compressors should not be run in parallel because A. B. Counterbalance Valve Poppet Type, Direct-Acting Metric Cartridge – 420 bar RSM12121 Up to 120 l/min Up to 420 bar The counterbalance valve RSM12121 is a direct-acting poppet valve. Uses include controlling over-running loads in cylinders and motors. This is also used on cylinder control when cylinders have load holding checks or counterbalance valves. This test comprises of 50 questions on Hydraulics and Pneumatics. Sun four port counterbalance valves add a drain port (port 4) to the cartridge which makes the valve insensitive to back pressure at port 2. AT211 MCQ. Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams. Gravity. MCQ 15. Additional Technical Data. It is not efficient to run two compressors B. After completing this course, participants should be able to describe how valves control flow rate, flow direction, and pressure in a hydraulic system. Flashcards. Standard poppet type differential area ; Special cavity, Sun T-11A; Maximum operating pressure 350 bar; Maximum flow 60 l/min; Data sheets. Used to control the operating sequence of two or more actuators. 4 Design Tips, techniques and potential issues (See Pro course)CounterbalCounterbal. Learn. 3-4 Typical operating characteristic(See Pro course) 6. Az2d41a359f. A. Which of the following is Type VOSLP counterbalance valves • Single acting Technical specifications and diagrams are measured with mineral oil of 46 cSt viscosity at 40°C (104°F) temperature. Figure 9.2.4 shows a diagram of a typical piston type, pilot operated safety valve. Comatrol’s counterbalance portfolio now includes 9 cartridge valves with a flow range extending from 20 LPM (5 US gpm) to 266 LPM (70 US gal/min) at 22 bar (319 psi) pressure drop. Working • This type of valve (which is normally open) is used to maintain reduced pressures in specified locations of hydraulic systems. Also, valves provide security while handling heavy loads. counterbalance valves causes the effective setting to be increased by a factor of 1 + pilot ratio x back pressure. 3. Load Holding Motion Control valve - Counterbalance valve VBSO-DE-FC2 05.42.06 - X - Y - Z. Dual, standard configuration; Flangeable; Maximum operating pressure up to 210 bar; Maximum flow up to 140 l/min; Data sheets . 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