Valve Torque Calculator

Calculates the gland bolt torque for valves packed with Chesterton's packings

A.W. Chesterton Company · com.chesterton.calculators.torque

Not rated yet 1K+ downloads v1.4 12 MB Android 4.0.3+ PEGI 3 · Everyone

Download APK 12 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v1.4 (9)
Updated: Dec 21, 2025 (10 months ago)
APK size: 12 MB
Requires: Android 4.0.3+ (API 15)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Graphics: OpenGL ES 2.0+
Category: Business (app)
Listed since: May 27, 2022 (at least)
Website: positiveyes.fr
Developer contact: [email protected]

About this APK

Valve Torque Calculator is an app by A.W. Chesterton Company in the Business category, listed since at least May 2022. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

What's new in v1.4

This update brings performance improvements and security enhancements for a smoother experience.

Description

From the listing uploaded by “appupdater”.

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

Version history

3 versions are listed, going back to v1.2.

v1.4 LATEST Dec 21, 2025 12 MB TRUSTED v1.3 Jan 7, 2025 12 MB TRUSTED v1.2 Aug 9, 2024 11.5 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Dec 21, 2025.
Certificate issued to “Positiveyes” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Dec 21, 2025
Validated against Google Play Dec 21, 2025
Signed byCN=chesterton valve packing calculator, OU=Positiveyes, O=Positiveyes, L=Le Barroux, ST=France, C=FR, [email protected]
Signing certificate (SHA-1)08:95:34:BC:29:07:79:8D:AB:6C:C3:19:A1:38:3D:2E:4A:11:24:40
File MD5b49a4a2017e74d20c2ad961828ac33eb
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Required hardware & features

Basic touch input android.hardware.faketouch
Portrait screen android.hardware.screen.portrait