ball valve torque calculation actuator

Worcester Controls Actuator Sizing Manual

selecting an electric actuator for a ball valve . Actuator stall torque is the amount of torque produced by the actuator just prior to the point where the motor stalls . Select the actuator whose startup torque output exceeds the break-away torque requirements of the valve . Electric actuator torque outputs are shown on page 12 .

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BALON FLOATING BALL VALVE ACTUATOR TORQUE DATA

Balon Floating Ball Valve Torques (inch pounds) BALON FLOATING BALL VALVE ACTUATOR TORQUE DATA Note: Values are raw torque values for new valves and standard seat materials. Values contain no service factors. Customer should determine appropriate service factors. Use the 285 psi. torque value for pressure differentials of 285 psi. & below.

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Apollo Valves

Actuators & Controls. APOLLOPRESS. Automatic Control Valves. Backflow Preventers. Balancing Valves. Ball Valves. Butterfly Valves. Gates, Globes & Check. Marine. Medical Gas Valves. ... Email Support. BACKFLOW "Apollo" engineering team sponsors UNCC student project "Apollo" Valves engineers meet with th... read more. BACKFLOW "Apollo ...

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Valve torque and actuator | Perfect Valve

 · Valve torque and actuator. Valve torque refers to the valve the required twisting force when the valve is opened or closed, which is one of the main parameters for choosing the valve driving actuator. Close the valve between the opening and closing parts of the seat sealing surface to form a sealed pressure, but also to overcome the stem and ...

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Electric Valve Actuator

Electric Valve Actuator - How They Work. Electric quarter turn valve actuators are electro-mechanical devices that are used to remotely control quarter turn valves, such as ball and butterfly valves pared to their pneumatic and hydraulic counterparts, electric valve actuators provide a more energy-efficient, clean, and quiet method of valve control.

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Section Vb2: Butterfly Valves

contrast to the 70° maximum rotation of valves driven with the piston actuators. When butterfly valves with pneumatic actuators are utilized for modulating control, positioners must be provided. The reasoning for this requirement will be elaborated upon later when torque requirements are discussed. Valve Disc Material Actuator Options

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Dynamic Torque Models for Quarter Turn Air Operated Valves

Our review of the recently published ball valve model [8] for AOV/MOV predictions shows that data from an earlier scaled model test performed on a ribbed ball valve [10] were used to predict hydrodynamic torque on full spherical ball designs (Figs. 2A, 2B). It should be noted that, to save weight, the ball closure element in large ball valves is

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Ball Valve Actuator Torque Calculations

 · RE: Ball Valve Actuator Torque Calculations. atad (Aerospace) 17 Mar 03 08:21. You need to establish the manufacturer and model number of the actuator and then contact them for the torque details relative to the input pressure. Once you know the torque output of your actuator you can compare this to the torque requirement for your new valve.

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Fisher Vee-Ball V150, V200, and V300 Rotary Control Valves

Maximum Ball Rotation 90 degrees Actuator Mounting Standard actuator mounting is on the right-hand side, as viewed from the valve inlet. The standard ball design and actuator action is counter-clockwise to close (CCW) so the ball will rotate to the top of the valve body when open for a horizontal pipe run with the valve shaft positioned horizontal.

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Valve Torque Calculator by A.W. Chesterton Company

 · Valve Torque Calculator. ... This tool calculates the gland bolt torque for valves that are packed with Chesterton style 1622 Low Emission Packing or …

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Actuator Selection

acting actuators are sized based on maximum valve torque, maximum actuator torque. IV. Type of Control Due to breakaway (static) friction, a valve''s torque is highest as it starts to turn. Since a modulating application requires high torque starts and close control over the ball position, a 25% more powerful actuator

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Flow Coefficient Data

The breakaway torque values listed below do not contain any service or safety factors and are adequate for the operation of Balon ball valves equipped with standard seats and used to control clean liquid or gas at ambient temperature. The run torque is approximately 50%, or one-half, of the breakaway torque.

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Balon Trunnion Actuator Torque Data

The run torque is approximately 50%, or one-half, of the breakaway torque. The re-seat torque is approximately 75%, or three-quarters, of the breakaway torque. Corrosion, scale, build-up on the ball, or other service conditions can drastically alter torque requirements and should be given consideration when selecting actuation or automation ...

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3.2 Design Basis Valve Stem Thrust F stem

torque switch trip. In this test program, the valve actuator''s torque switch was set higher than normal, to ensure that the valve would close all the way before the torque switch tripped, so that we could obtain all the data we needed from the test. With the exception of the high torque switch setting (in this data

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The importance of maximum allowable stem torque in valves ...

 · The actuator sizing safety factor for emergency shutdown is 2. The torque values of the valve based on 250 Barg differential pressures are given in Table 1.Double Isolation and Bleed type 2 valve as per API 6D standard contains two different seats, one with Single Piston Effect (SPE) and the other one with Double Piston Effect (DPE).

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Manual M49 Quarter-turn Valves: Head Loss, Torque, and ...

calculations, added equations for eccentricity torque, added metric units and equiva - lents, consolidated the nomenclature, and corrected some errors. This third edition man-ual broadens the application of these methods to include other quarter-turn valves such as ball, plug, and rotary cone valves.

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3.3 Design Basis Valve Stem Torque converted to linear ...

3.3 Design Basis Valve Stem Torque . For rotatingstem valves (ball, plug, - and butterfly), the torque needed to operate the valve is a summation of two loads: • stem torque, that is, the reaction torque in Loads not dependent on pressure or flow such as bearing loads and packing loads. • …

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Developing a Better Understanding of Actuator Torque

 · When the torque is insufficient to facilitate the climb, the gear ratio can be altered to increase the available torque. Similarly, an actuator motor converts the latent force available to the actuator into actuator torque. Before choosing a valve actuator, users must know the actuator torque for the options being considered.

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How To Size Pneumatic Actuators

When sizing an actuator, first consider your valve''s torque requirements. This includes: Break torque, or opening torque, refers to the force required to start moving a closed valve.; Running torque, or mid-stroke torque, is the force required to maintain movement of the valve between the open and closed positions.; Seating torque, also called closing torque, is the force required to seat a ...

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Valve Torques And Actuator Torque Determination …

actuator selection. The following pages contain valve torque graphs and tables for the various Sharpe® Valve models, along with Media and Service Factors which MUST be considered. Ball Valve Torques: The torque values listed in the following graphs and tables …

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DIMENSIONING ACTUATORS FOR TRUNNION BALL VALVES

2.2. Drive torque calculation for the fire-safe triunnion ball valve,,Fire - safe" ball valves are characterized by the existence of additional seals, such as metal - metal (figure 3). For the determination of drive torque, it takes into account the particular case when the friction and pressure needed to ensure the seal are higher.

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Technical information Valve torques

The torque required to operate a ball valve is a function of friction between the valve''s metal parts and its soft sealing materials. The friction points in a floating ball valve are the stem and the ball/seat. Stem torque When tightening the stem nut to compress the stem sealing, the friction between the stem assembly parts is increased, which

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Actuator selection and sizing for valves | SpringerLink

 · This paper presents a case study of breakaway torque (break to open) calculation and actuator sizing for a full-bore ball valve in pressure Class 300 equal to 50 barg nominal pressure and 22Cr duplex body material. The valve is fail close with an emergency shut down function, and a pneumatic actuator was selected for the valve.

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SVF Valve Torque Tables

 · SVF Flow Controls Performance Engineered. World Headquarters. 5595 Fresca Drive. La Palma CA 90623. Call us Toll Free. 800.783.7836. Email …

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Valve and Actuator Estimating Tool

Honeywell Valve and Actuator Estimating Tool 5 PRODUCT WORKSHEETS In addition to the SELECTIONS worksheet, there is a dedicated worksheet for each Valve family and one for Direct Coupled Actuators. Your product selections will be made from these worksheets. Ball Valves & Actuators DCA Actuators Flanged Globe Valves & Actuators

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VALVE TORQUE

Due to the variable operating torque of a ball valve when scotch yoke type or spring return actuators are used IFC recommends factoring the breakaway torque by 0.7 for the running torque and 0.8 for the valve ending torque. SELECTION OF ACTUATOR CONSTANT TORQUE ACTUATORS (i.e. Double Acting Pneumatic and Electric)

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ACTUATOR SIZING FLOATING BALL VALVES

For the torque value required to turn a floating ball valve through its 90° travel, consider torque requirements at these five basic positions: BTO – break open torque: the torque required to unseat the closed valve. of the stated torque RTO – opening torque: the torque needed to move the valve to the fully open position. Average 70% ...

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Ball Valves with Air Torque Actuators

Supplied Assembled Including Ball Valve, Drive Dog and Air Torque Actuator. Spring Return Pneumatic Actuator. High Precision Stainless Steel Laser Cut Bracket. Extended Cycle Testing to Ensure Longevity. Fail Close Standard Configuration. Fail Open Setup also Available. Standard Threads Options NPT & SAE . Sizes Available from 1/4" to 1"

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SD Series Floating Ball Valve

3.0 Calculation of final valve torque (FBTO) for selection of gearbox or actuator 3.1 Calculated final valve torque (FBTO) based on temperature and seat material: SEAT MATERIAL AT VARIOUS TEMPERATURE FINAL VALVE TORQUE (FBTO) "MODIFIED PTFE / RTFE" / Devlon from (-) 29 °C to high temperature as per PT rating chart = BTO (Refer to Table A)

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VALVE/ ACTUATOR TORQUE SIZING ANALYSIS CHART FOR …

VALVE/ ACTUATOR TORQUE SIZING ANALYSIS CHART FOR TRUNNION BALL VALVES PISTON STYLE SCOTCH YOKE ACTUATOR SIZING CALCULATIONS SHEET LARGER ACTUATORS 2500Nm TO 17000Nm SPRING RETURN (SET SPRING TO CLOSE) *1 PTFE/RPTFE seats can require more torque to unseat after a period of time due to its fluidity & memory.

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