valve mast and actuator torque

  • BALON FLOATING BALL VALVE ACTUATOR TORQUE DATA

    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. 4" Bore 600 Class MAST = 16164 in.lbs.

    Service Online
  • Valve actuatorWikipedia

    A valve actuator is the mechanism for opening and closing a valve.Manually operated valves require someone in attendance to adjust them using a direct or geared mechanism attached to the valve A valve actuator is the mechanism for opening and closing a valve.Manually operated valves require someone in attendance to adjust them using a direct or geared mechanism attached to the valve stem. Power-operated actuators using gas pressure hydraulic pressure or electricity allow a valve to be adjusted remotely or allow rapid operation of large valves. Service Online
  • Valve Actuators and ControlsFlotech Inc

    Valve Actuators and Controls Electric Pneumatic and Hydraulic Valve Actuators Our valve technicians are trained in mounting repairing and servicing valve actuators from a variety of valve actuation manufacturers including QRTCO PRATT Morin Keystone Unitorq Biffi Limitorque Promation Engineering and others.

    Service Online
  • IndustrialValves

    AV sizing means obtaining and applying the valve torque on demand to derive at the appropriate actuator operating at the minimum specified air supply pressure while within the limits of the AV sizing means obtaining and applying the valve torque on demand to derive at the appropriate actuator operating at the minimum specified air supply pressure while within the limits of the Maximum Allowable Stem Torque (MAST) at maximum air supply pressure more precisely within the limits of the mounting kit and drive train components. Service Online
  • Technical Information Habonim

    Technical Information. Habonim supports engineers in their daily work by providing hydraulic and pneumatic information insights into the chemical characteristics of metals polymers and elastomers as well as dimensional tables and torque graphs. It covers vital information on ball valve performance and automation.

    Service Online
  • PBVForum Energy Technologies Inc.

    Valve Automation. Pneumatic electric and Gas over Oil Hydraulic actuators are available per customer requirements. In addition Valve controls such as limit switches solenoid valves or any other Valve Automation. Pneumatic electric and Gas over Oil Hydraulic actuators are available per customer requirements. In addition Valve controls such as limit switches solenoid valves or any other customer required control can be supplied upon request. Service Online
  • Valve Mast And Actuator Torque

    valve mast and actuator torque. This is valve manufactures responsibility to calculate and provide valve MAST during engineering stage and ensure torque delivered by actuator is always less than the valve MAST. During offer stage valve MAST furnished in performance table shall be considered as basic value.

    Service Online
  • How to Properly Size an ActuatorMRC Global

    The more pressure the more torque the actuator has the potential to output therefore a regulator and a relief valve will also reduce the probability to damage the valve stem due to the excess torque from the actuator. Properly sizing an actuator is an important step to realizing a valve

    Service Online
  • ActuatorsImtex Controls

    Market leading pneumatic hydraulic and electric actuator technology ensuring constant operational safety and reliability. The Camtorc series actuators are designed to ensure compact and safe operation of valves and dampers with a constant torque being generated throughout the entire pressure stroke of the actuator.

    Service Online
  • Section Vb2 Butterfly ValvesJohnson Controls

    Valve Product Bulletins to determine which size valves can utilize the piston actuators. The maximum valve disc rotation which can be obtained for a butterfly valve driven by a Johnson Controls piston actuator is 70°. The high pressure pneumatic rack and pinion and electric actuators can be utilized to modulate any size of VF series butterfly

    Service Online
  • Technical information Maximum Allowable Stem Torque

    • Use the valve torque graphs and verify that the MAST does not exceed the valve s maximum torque at the application maximum differential pressure. Important notes • For valves complying with API6D and SIL certified packages the valve maximum torque must not exceed 50 of the MAST figures shown in Table B.

    Service Online
  • Maximum Allowable Stem Torque (MAST) for ValveSK

    It is maximum allowable torque a stem of a quarter turn valve can be subjected to without mechanical failure. Engineering unit Nm OR lb-in. During valve operation torque delivered by actuator (Pneumatic or electric) at any stage should not exceed MAST value.

    Service Online
  • The importance of maximum allowable stem torque in valves

    Maximum allowable stem torque/thrust (MAST) is defined as the maximum torque/thrust that can be applied to the valve train without risk of damage as defined by the valve manufacturer/supplier.

    Service Online
  • Actuator MAST Automation Control Engineering Forum

    Jul 16 2019 · Having now understood MAST (Maximum allowable stem shear torque) it would seem a bad idea to have the Actuator MAST exceeding the Valve MAST as you could end up with a damaged valve. Can you explain what calculations you are making If these are spring return are they fail safe closed or fail safe open

    Service Online
  • VALVE/ ACTUATOR TORQUE SIZING ANALYSIS CHART FOR

    Above Actuator is Complete with Bracket (ISO Mounting) and high tensile Adaptor 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.

    Service Online
  • Technical Information Habonim

    Technical Information. Habonim supports engineers in their daily work by providing hydraulic and pneumatic information insights into the chemical characteristics of metals polymers and elastomers as well as dimensional tables and torque graphs. It covers vital information on ball valve performance and automation.

    Service Online
  • VALVE TORQUEIslip Flow Controls

    torque again increases but to an amount less then the valve breakaway torque.This torque is known as the valve ending 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.

    Service Online
  • The importance of maximum allowable stem torque in valves

    The important point is that the actuator maximum output torque/thrust based on the maximum supply voltage or operating pressure generated by the actuator should not exceed the valve MAST at any

    Author Karan SotoodehService Online
  • Size Matters Control Valve Sizing 101Industrial Automation

    Size Matters Control Valve Sizing 101. The torque output of most rotary actuators changes with the angle of opening. At the same time the valve s torque requirement depends both on the opening angle and the throttling pressure drop at that particular angle. To ensure adequate spare torque to guarantee smooth accurate control a

    Service Online
  • Valve/Actuator Stall TestValve engineeringEng-Tips

    Aug 25 2010 · The ball valve is a 24"x20" reduced bore 1500# Class Super Duplex Valve (Body and Ball). The estimated maximum actuator torque is 56 413 Nm. So the question is is anyone The ball valve is a 24"x20" reduced bore 1500# Class Super Duplex Valve (Body and Ball). The estimated maximum actuator torque is 56 413 Nm. So the question is is anyone familliar with stall tests (specifically on valves this size) and if so are there any testing standards and/or guidelines our vendor can follow so to not damage the ball Service Online
  • Valve Stem Material Selection for Offshore Actuated Valves

    Apr 20 2020 · In this situation a pneumatic actuated butterfly valve had a MAST (Maximum Allowable Stem Torque) problem. In fact MAST should be higher than the actuator torque. However in this case an 8" Class 150 (Pressure Nominal 20Barg) Carbon steel body valve was receiving a maximum torque value of 1193 ft/lb (1618 N.m) from the actuator.

    Service Online
  • The importance of maximum allowable stem torque in valves

    The important point is that the actuator maximum output torque/thrust based on the maximum supply voltage or operating pressure generated by the actuator should not exceed the valve MAST at The important point is that the actuator maximum output torque/thrust based on the maximum supply voltage or operating pressure generated by the actuator should not exceed the valve MAST at any point of travel. The actuator is a component or machine installed on the valve that is responsible for moving (e.g. opening or closing) the valve. Service Online
  • Ball Valve Torque Calculation Sciencing

    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. The rotation of the 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. The rotation of the ball requires a certain turning moment or torque which depends upon factors such as pressure drop and fluid flow velocity. Service Online
  • Technical information Maximum Allowable Stem Torque

    • Use the valve torque graphs and verify that the MAST does not exceed the valve s maximum torque at the application maximum differential pressure. Important notes • For valves complying with API6D and SIL certified packages the valve maximum torque must not exceed 50 of the MAST figures shown in Table B.

    Service Online
  • ACTUATOR SIZING FLOATING BALL VALVES

    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 BTObreak open torque the torque required to unseat the closed valve. 100 of the stated torque RTOopening torque the torque needed to move the valve to

    Service Online
  • BALON FLOATING BALL VALVE ACTUATOR TORQUE DATA

    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 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. 4" Bore 600 Class MAST = 16164 in.lbs. Service Online
  • Sizing of Rack Pinion actuatorsEmerson

    Sizing of Rack Pinion actuators Sizing is the selection procedure to select the right size of actuator on a valve with a given torque characteristic. This data sheet gives brief samples on how to size actuators and which data is needed. Torque characteristics of valves EL-O-Matic F-Series actuators are commonly used to operate

    Service Online
  • KTM PNEUMATIC ACTUATORS AK SERIES (FOR SMALL AND

    KTM PNEUMATIC ACTUATORS AK SERIES (FOR SMALL AND MIDDLE SIZED VALVES) OUTPUT TORQUE TABLE Body High-strength ductile iron construction for longer life and prevention of deformation due to torque forces Top cover Die-cast aluminium with a visual travel indicator marked at 15˚ increments Stem The shaft rotating part is hard chrome

    Service Online
  • Ball Valve Torques and Actuator Selection Information

    the valve torque is at maximum and actuator torque is at minimum. The 0.70 factor reflects the maximum valve torque expected other than breakaway and considers that the maximum output torque of the spring return rack and pinion actuator is at the start of the stroke. This would not apply to a scotch yoke or crank arm actuator because the torque

    Service Online
  • Technical information Maximum Allowable Stem Torque

    • Use the valve torque graphs and verify that the MAST does not exceed the valve s maximum torque at the application maximum differential pressure. Important notes • For valves complying with • Use the valve torque graphs and verify that the MAST does not exceed the valve s maximum torque at the application maximum differential pressure. Important notes • For valves complying with API6D and SIL certified packages the valve maximum torque must not exceed 50 of the MASTService Online
  • 3.2 Design Basis Valve Stem Thrust F stem

    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 plot torque switch trip occurs at a higher

    Service Online
  • Maximum Allowable Stem Torque (MAST) for ValveSK

    It is maximum allowable torque a stem of a quarter turn valve can be subjected to without mechanical failure. Engineering unit Nm OR lb-in. During valve operation torque delivered by actuator It is maximum allowable torque a stem of a quarter turn valve can be subjected to without mechanical failure. Engineering unit Nm OR lb-in. During valve operation torque delivered by actuator (Pneumatic or electric) at any stage should not exceed MAST value. Service Online
  • Valve Torques And Actuator Torque Determination

    Valve Torques And Actuator Torque Determination Information . EB-2001 Rev. D 8/16 P a g e 2 of 43 It is the responsibility of the customer to determine the suitability of Sharpe ® Valves

    Service Online
  • Worcester Controls Actuator Sizing Manual

    definition . Actuator startup torque is the amount of torque initially pro-duced by an actuator when starting from rest . Use startup torque when selecting an electric actuator for a ball valve . definition . Actuator startup torque is the amount of torque initially pro-duced by an actuator when starting from rest . Use startup torque when 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 . Service Online
  • Flow Coefficient DataCv Ratings of Full Bore Valve

    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.

    Service Online
  • Worcester Controls Actuator Sizing Manual

    definition . Actuator startup torque is the amount of torque initially pro-duced by an actuator when starting from rest . Use startup torque when 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 .

    Service Online