Modern fugitive emissions standards require a different approach to sealing valves with packed stuffing boxes. Even more than before the balance between leakage and stem friction becomes more important. For this reason it is crucial to tighten packing with a calculated force that keeps the balance between low emission levels and acceptable stem friction.

This tool calculates the gland bolt torque for valves that are packed with Chesterton style 1622 Low Emission Packing or Chesterton style 1724E Low Emission Sealing Sets. It requires the entry of the stuffing box inner and outer diameter, the stud diameter and number of studs and the entry of the lubricant used when tightening the valve. The tool works both in Inch and Metric units.

The generated torque is the torque that should be applied to the gland nuts.

The installation instructions of the packing used should always be followed in detail.

When using the torque in this tool and following the installation instructions of the packing, the leak level of the packing is guaranteed to stay below 100ppm, as measured following EPA Method 21, for duration of 5 years*.

*see the Chesterton Valve Emissions Warranty for conditions that apply

Valve Torque Calculator is a free online tool designed to assist users in calculating the appropriate torque values for tightening and loosening valves. It is commonly utilized by professionals and DIY enthusiasts alike in various industries, including plumbing, HVAC, automotive, and manufacturing.

Function

The calculator operates by taking into account several key factors that influence the torque required for a given valve application:

* Valve Size: The size of the valve, typically measured in inches or millimeters, affects the amount of torque necessary to seal the valve effectively.

* Valve Type: Different types of valves, such as gate valves, ball valves, and butterfly valves, have varying torque requirements due to their design and mechanism.

* Valve Material: The material from which the valve is constructed, such as brass, iron, or steel, can impact the torque needed for proper sealing.

* Joint Type: The type of joint between the valve and the pipe, such as threaded, flanged, or compression, also influences the torque requirements.

* Pressure Rating: The pressure rating of the valve, which indicates the maximum pressure it can withstand, affects the torque needed to ensure a leak-tight seal.

Usage

To use the Valve Torque Calculator, users simply input the relevant parameters for their specific application. The calculator then generates the recommended torque value based on the provided information. It is important to note that the calculated torque values are approximate and may vary slightly depending on factors such as the specific valve model, thread condition, and lubrication.

Benefits

Using the Valve Torque Calculator offers several benefits:

* Accuracy: The calculator provides precise torque values based on industry-standard formulas and empirical data, ensuring proper valve tightening and preventing over-tightening or under-tightening.

* Efficiency: It saves time and effort by eliminating the need for manual calculations or searching for torque values in reference tables.

* Safety: By providing accurate torque values, the calculator helps prevent valve leaks, blowouts, and other potential hazards that can arise from improper tightening.

* Compliance: The calculator can assist users in adhering to industry standards and manufacturer specifications, ensuring safe and reliable valve operation.

Availability

Valve Torque Calculator is a widely available online tool that can be accessed through various websites and platforms. It is typically free to use and requires no registration or installation. Users can easily input their parameters and obtain the calculated torque values in a matter of seconds.