Backflow Device Selector Tool

ZkDev

Contains adsIn-app purchases

About this app

Backflow Prevention Device Selector is a professional plumbing calculator and reference tool for master plumbers, backflow prevention testers, water utility inspectors, and building code officials. Select the correct ASSE-certified backflow prevention device for any application in seconds, with full hazard classification and IPC/UPC code compliance verification. Works 100% offline on the job site with zero internet dependency — designed for water safety compliance.

FEATURES
• Device Selection by Application: 16 application types including irrigation, boiler, fire protection, laboratory, fountain, carwash, potable water storage, heat exchanger, beverage dispenser, medical gas, dental office, pool/spa, lawn sprinkler, food service, industrial process, and auxiliary water supply
• 8 Backflow Device Types: Atmospheric Vacuum Breaker (AVB), Hose Vacuum Breaker (HVB), Spill-Resistant Vacuum Breaker (SVB), Double Check Valve Assembly (DCVA), Pressure Vacuum Breaker (PVB), Reduced Pressure Principle Device (RPZ), Anti-Siphon Device (AG), and Dual Check Valve
• Hazard Classification: Automatic high vs. low hazard classification for each application type to ensure correct protection level
• ASSE Standards Reference: Complete citations for ASSE 1001, 1013, 1015, 1020, 1024, 1052, 1056 standards with device specifications
• Ranked Recommendations: Devices ranked by preference and code compliance for your specific application
• Pressure and Temperature Requirements: Verify device pressure and temperature compatibility for your specific installation
• Installation Notes: Code-specific installation requirements and location constraints for each device type

HOW IT WORKS
1. Select your application type from the dropdown (irrigation, boiler, fire protection, etc.)
2. The app automatically classifies the hazard level (high or low)
3. View all compatible backflow prevention devices ranked by preference
4. See ASSE standard references and full device specifications
5. Save calculations to history, export to PDF for code inspections and permits

PERFECT FOR
• Master plumbers and journeyman plumbers performing backflow prevention installations
• Backflow prevention testers and cross-connection control specialists
• Water utility inspectors verifying compliance with code standards
• Plumbing contractors and mechanical estimators
• Building code officials and inspectors
• Plumbing apprentices learning ASSE standards and device selection

OPTIONAL PRO UPGRADE — $2.99 ONE-TIME IN-APP PURCHASE
The following features require a separate one-time in-app purchase. They are not required to use the calculator:
• Unlimited saved calculation history
• PDF export of results
• Dark theme
• Ad-free experience

STANDARDS & COMPLIANCE
ASSE 1001 Atmospheric Vacuum Breaker Standards, ASSE 1013 Hose Vacuum Breaker Standards, ASSE 1015 Spill-Resistant Vacuum Breaker Standards, ASSE 1020 Pressure Vacuum Breaker Standards, ASSE 1024 Double Check Valve Assembly Standards, ASSE 1052 Reduced Pressure Principle Device Standards, ASSE 1056 Anti-Siphon Device Standards. Also references IPC (International Plumbing Code) and UPC (Uniform Plumbing Code) cross-connection control requirements.

OFFLINE & PRIVACY
• Works 100% offline - no internet required on the job site
• No account needed - instant access without signup
• No data collection or cloud sync - all calculations stored locally on your device
• No tracking or analytics - your work stays completely private

Part of PlumbTools Suite - professional plumbing calculators and code reference tools for plumbers, pipefitters, and plumbing contractors. Reduce calculation errors, ensure code compliance, and work faster in the field with plumbing code calculators.