# Valve-Ruler > Business tool for selecting and connecting valves and actuators. (iPhone/iPad app by Danfoss A/S.) - Source: https://appshunter.io/ios/app/valve-ruler/id966127722 (this page in markdown: same URL + `.md`) - Developer: [Danfoss A/S](https://appshunter.io/developer/423984644) - Category: Business, Productivity - Price: Free - Age rating: 4+ - Requires: iOS 6.0 · 17 MB - Languages: American English, German (Germany) - Released: 2015-02-25 - Data updated: 2026-06-09 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/valve-ruler/id966127722/reviews.md ## What is Valve? Valve ruler is a selection tool, which helps you choose the right combination. Valve ruler app is a selection tool, which will help you choose and connect the right valve and actuator for your application. You can input or calculate KV, select application type, valve connection, ports and PN for your application or simply just browse all and find the best solution for you. After you have selected your combination you can save it in the app or send it via email. Features: - Calculates KV - Shows range of valves - Shows range of actuators for selected valve - Share combination - Save combination Valve ruler enables you to calculate your KV by entering your flow (Q) and your inlet and outlet pressure. After selecting the application type you are searching for and valve connection, you can also choose between 2 or 3 ports and select your PN. If you don’t have this data, you just click browse and valve ruler will give you all the options available. After finding the right valve, you can select the actuator which combines with selected valve the actuator’s version. When your selection is completed, you can either save it or share it via email. When browsing, you can move the ruler right or left, to find the right KVs and DN for your valve and also always calculate your KV by clicking on pencil in the top. Or delete it without returning to selection screen, by clicking on x on the top. In settings, you can change your language, update the app, see instructions or view saved. ## Key features - Calculates KV values - Displays valve and actuator ranges - Saves selected combinations - Shares combinations via email - Browse all available options ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/valve-ruler/id966127722/reviews.md ### 1/5 — Doesn’t work *2026-01-13, version 1.1.2* Clearly this app, that was last updated 10yrs ago has issues. Maybe incompatible with recent iOS. Either way, why is Danfoss still listing it on their Website! ### 1/5 — Doesn’t work *2025-10-02* The application does not run in an iPhone 16. Stay on the application description with no button to change image ### 1/5 — Useless… *2025-09-10, version 1.1.2* Does nothing on an iPhone & locks up your iPad. Don’t bother. ### 1/5 — Does not do anything *2024-06-03, version 1.1.2* App just opens and tells me what it is meant to do but does no more ?? ## Frequently asked questions about Valve ### How does Valve-Ruler calculate KV? Valve-Ruler calculates KV by allowing you to input your flow (Q) and your inlet and outlet pressure. This feature helps determine the appropriate valve size for your application. ### Can I save my valve and actuator selections in Valve-Ruler? Yes, after selecting your desired valve and actuator combination, you can save it directly within the app for future reference. ### What information can I share from Valve-Ruler? You can share your selected valve and actuator combinations via email. This is useful for documentation or collaborating with colleagues. ### Does Valve-Ruler support offline use? The provided description does not specify offline functionality. However, its core features involve calculations and selection, which may require an internet connection for certain data or updates. ### What devices is Valve-Ruler compatible with? Valve-Ruler is available for iPhone, iPad, and iPod. It is designed for iOS devices. ### How often is Valve-Ruler updated? The app was last updated on December 2, 2015, with version 1.1.2. Further update frequency information is not available in the provided data. ### Is Valve-Ruler suitable for beginners? The app offers a 'browse' option for users who may not have all the specific data, suggesting it can accommodate varying levels of user expertise. It also includes instructions in its settings. ### What is the age rating for Valve-Ruler? Valve-Ruler has an age rating of 4+. This indicates it is suitable for a wide audience, though its practical use is intended for professionals. ## Version history (last 2 releases) ### 1.1.2 — 2015-12-02 This app has been updated by Apple to display the Apple Watch app icon. iOS9 support ### 1.0 — 2015-02-25 No release notes. ## Apps similar to Valve | App | Rating | Price | Category | | --- | --- | --- | --- | | [Refrigeration Toolkit](https://appshunter.io/ios/app/refrigeration-toolkit/id1483010728) | 4.8 (69) | Free | Business | | [PFM1000](https://appshunter.io/ios/app/pfm1000/id1445659388) | — | Free | Business | ## More apps by Danfoss A/S - [Installer App](https://appshunter.io/ios/app/installer-app/id423984641) - [Ref Tools](https://appshunter.io/ios/app/ref-tools/id472312541) - [ECL Comfort 310 Portal](https://appshunter.io/ios/app/ecl-comfort-310-portal/id486704541) - [Danfoss Troubleshooter](https://appshunter.io/ios/app/danfoss-troubleshooter/id499840638) - [KoolCode](https://appshunter.io/ios/app/koolcode/id563222728) - [Danfoss Spare Parts](https://appshunter.io/ios/app/danfoss-spare-parts/id584338203) All apps by Danfoss A/S: https://appshunter.io/developer/423984644 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-09.*