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Ball Valve Actuator Torque Calculations - Valve ...

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.


SD Series Floating Ball Valve - Emerson

SD Series Floating Ball Valve PRESSURE CLASS SEAT TORQUE VALUES (BTO) N-m (lb-in) NPS 1/2" 3/4" 1" 1-1/2" 2" 3" 4" 6" 8" 150 ... 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: ... 3.2.1 Maximum pull force required at the handwheel ...


Breakaway Torque Calculation For Ball Valve

Breakaway Torque Calculation For Ball File Type PDF Breakaway Torque Calculation For Ball Valve Breakaway torque can refer to the force needed to turn a faster like a nut. The amount of breakaway torque needed to move something is determined in part by static friction.


Valve torque requirements - Torque is more than meets the eye

When considering the torque values to operate the valve, one must consider: How much torque is required to fully open and fully close the valve. If the valve gets stuck in mid function of opening or closing the valve a safety factor must also be considered sizing the actuator.


Gate valve torque, torque calculation data - TFW VALVE

Gate valve torque, torque calculation data. Views: 523 Author:hong Publish Time: Origin: TFW VALVE. When the opening of the gate valve is above 10%, the axial force of the gate valve, that is, the operating torque of the gate valve does not change much. When the opening of the gate valve is less than 10%, the pressure difference ...


Breakaway Torque Calculation For Ball Valve

Stall converter vs torque converter The ball valve contains a spherical plug that controls the flow of fluid through the valve body. Ball and Cage valves are close to linear in terms of % of flow or C V to % of stem or ball rotation. The 3 basic types of ball valve are …


5308-5309 Ball Valve Manual - Central States Industrial

As the amount of pressure in a ball valve increases, so does the amount of torque required to open and close it. Use the charts below to determine the type of actuator, if any, that is required for your application. PTFE Seat Material Reinforced PTFE Seat Material


Actuator Selection - Flowserve

alignment may increase required torque. Because of the nature of synthetic seal materials used in ball valves, the torque values are not constant. Conditions such as pressure, temperature, type of fluid, amount and kind of suspended material in the fluid, and frequency of operation all …


Technical Manual

(DN 500) or smaller, the maximum torque required to operate the valve will be seating/unseating torque. However, dynamic torque should be considered particularly in: • Control applications using larger valves (24˝ [DN600] and above) where the disc is maintained in the open position


Structural Analysis & Design of a New Type of Ultra-low ...

2. A new type of structural design of the ultra-low temperature floating ball valve Given that there are disadvantages for the current common floating ball valve structure, a new type of ultra-low temperature floating ball valve is conceived, so that it can not only meet the required sealing performance, but also realize the online maintenance function, reducing the processing difficulty and ...


HANDWHEEL OPERATORS AND TORQUE - Valtorc International

Torque is expressed as force x distance to distinguish it from Energy which has the same units but is expressed as distance x force. (Example): 100 lbft Torque. 100 ftlb Energy. Valve Handwheel Torque and Rim Pull: Valves are often operated by turning a Handwheel. Operating torque is applied by pulling on the Handwheel Rim. That's called, Rim ...


CONCEPTUAL DESIGN AND ANALYSIS OF HIGH PRESSURE …

other factors. The design calculation is done for sealing cup, ball, connection adaptor, valve housing and operating lever. The maximum stress and deflection is calculated for different sealing cup materials under high pressure. The torque required to operate the …


Ball Valve Seat Selection Guide - Triad Process

Depending on the valve and trim we can achieve temperatures in excess of 1000°F for metal seated ball valves. Tri-fill™ (T) Triad's high performance seat. Offers better creep resistance, lower coefficient of friction than that of PTFE, ideal for semi-conductor, hi-purity service.


Actuator sizing calculation for Gate & Globe Valves

Actuator Sizing Calculation for Gate & Globe Valves GSL-Actuator-Sizing-Calculation R1 - AS Information required Examples 1 Bore diameter at seat (use actual diameter if known) 12 inch 3 inch 3 inch 2 Differential pressure, using 30psi minimum, and line psi if higher 200 psi 2250 psi 2250 psi 3 Type of valve and service Wedge gate, oil Globe ...


Determining Required Valve Pressure Ratings-download-file

Ball valves are operated by a quarter turn motion. The seats are pretensioned and exert a certain force upon the ball. The required torque is therefore the same regardless of the differential pressure up to a certain value (which usually is quite high). When this value is exceeded, the torque increases in proportion to the differential pressure.


370D6 Series Trunnion-Mounted Ball Valves

Our WKM valve product line offers gate valves, trunnion-mounted and floating ball valves, and butterfly valves, all built to standards for demanding applications The WKM 370D6* trunnion-mounted ball valve is recognized throughout the world for durability, reliability, and flexibility in many challenging situations Oklahoma City, Oklahoma, USA


WKM® 370D6 Ball Valve - Energy Valves

370D6 ball valves 2" FP to 16" FP are full bore, through conduit, bi-directional, anti-blowout stem, double block and bleed in closed and open position, with trunnion mounted ball for easy operation. These valves can be equipped with plastic seat inserts made of RTFE, NYLON, or PEEK as the customer requires. All the seats are self-


How to calculate the amount of contact area between the ...

Answer: Ball Valve Torque Calculation By David Dunning Standard ball valves are known as quarter-turn valves. The valve stem rotates a metal ball with a hole drilled in it through a quarter-turn, or 90 degrees, to open and close the valve. Torque The rotation of the ball requires a certain tu...


Worcester Controls Actuator Sizing Manual

Valve torque is also a function of the media flowing through the valves . Abrasive media have a tendency to increase the amount of friction between the ball and seats, whereas some light oils, which provide additional lubricity, can reduce the amount of torque required . The torque required to operate a ball valve is maximum at the begin-


Ball Valve Torque Calculation Xls

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 …


Balon Trunnion Actuator Torque Data

12 The run torque is approximately 50%, or one-half, of the breakaway torque. The re-seat …


Ball Valve - an overview | ScienceDirect Topics

Ball valves are used for both on/off and throttling service. Ball valves are similar to plug valves but use a ball-shaped seating element (Figure 4.56). They are quick-opening and require only a quarter-turn to open or close. They require manual or power operators in large sizes and at high operating pressures to overcome the operating torque.


Valve Sizing Calculations (Traditional Method)

Improper valve sizing can be both expensive and inconvenient. A valve that is too small will not pass the required flow, and the process will be starved. An oversized valve will be more expensive, and it may lead to instability and other problems. The days of selecting a …


How to calculate motor drive torque for ball screws

Drive torque is primarily influenced by the axial load on the screw and the screw's lead. F a = total axial force (N) P = lead (mm) η = efficiency of ball screw. The axial load is not only the process force (drilling, punching, etc.), but also includes the force required to move the load. Since most ball screw assemblies use profiled guide ...


Breakaway Torque Calculation For Ball Valve

breakaway torque calculation for ball valve by online. You might not require more become old to spend to go to the book creation as without difficulty as search for them. In some cases, you likewise attain not discover the broadcast breakaway torque calculation for ball valve that you are looking for. It will certainly squander the time.


motors - Torque required calculation - Engineering Stack ...

Torque required calculation. Ask Question Asked today. Active today. Viewed 1 time 0 $begingroup$ I have two motors of torque 0.19Nm. ... Torque required to launch a tennis ball. 1. off-scale torque measured - what is my torque arm? 1. How to calculate the torque created by a rotating motor? 1.


Three-way Ball Valve, horizontal version Pfeiffer Type BR ...

Dmax and required breakaway torque M ... Selecting and sizing the ball valve 1. Calculate the required nominal size. 2. Determine which flow schematic is required 3. Select valve from Tables 1 and 2 4. Select the actuator 5. Select accessories Ordering text Three-way ball valve Type BR 26l/BR 26t


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.


Actuator selection and sizing for valves | SpringerLink

The type of pneumatic actuator is scotch and yoke due to quarter turn functionality of the ball valve. The second step is to calculate the maximum torque required to open the valve at maximum pressure differential (the breakaway torque) [4, 5]. A practical way to calculate the amount of torque is to multiply the force by the lever arm.


VALVE/ ACTUATOR TORQUE SIZING ANALYSIS CHART FOR …

All Torque Values are theoretical, however where required we will torque test prior to despatch. The real valve torque value can be higher depending upon the following listed factors as these factors can drastically increase (or decrease) the torque. Please advise if any of the following factors are applicable.


Ball Screw Selection and Calculations - University of Utah

– Torque required to generate the thrust force. ME EN 7960 – Precision Machine Design – Ball Screw Calculations 4-4 Driving Torque to Obtain Thrust 2πη F l T = a T: driving torque [Nm] Fa: thrust force [N] l: screw lead [m] η: efficiency Source: THK Co., Ltd.


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


Maximum Allowable Stem Torque (MAST) - Piping Engineering

b) Ball valve with solid circular stem & rectangular cross-section at the end of stem for connection to ball-(Type B) (Valve / Actuator mounting bracket design ISO 5211 and stress calculation Not covered in this presentation). c) This guide is applicable to trunnion mounted ball valves only. d) This guide is limited to maximum allowed torque ...