Overview
The Balston 41-070 is a differential pressure indicator designed for monitoring filter condition in compressed air systems. This indicator is used to monitor the pressure drop across filters or other components in a compressed air system, with sensitivity in the range of 0 to 5 psi differential. The 41-070 is a proven accessory for Balston filter assemblies and other pneumatic filter housings operating up to 250 PSIG.
Key Features
- 0–5 PSID (pounds per square inch differential) sensing range
- Rated for system pressures up to 250 PSIG (17 BAR)
- Direct visual indication of filter element saturation
- Compact, easy-to-read design
- Compatible with Balston filter series and standard NPT ports
Technical Specifications
The Balston 41-070 offers straightforward, reliable pressure drop monitoring with minimal installation complexity:
- Differential Range: 0–5 PSID
- System Pressure Rating: 250 PSIG (17.2 BAR)
- Connection: NPT threaded ports (standard pneumatic)
- Indication Method: Visual / mechanical indicator
- Material: Durable industrial-grade construction
Typical Applications
- Compressed air filter condition monitoring
- Pneumatic system maintenance and troubleshooting
- Indicating when filter elements require replacement
- Industrial plant air systems, tool air lines, and process air circuits
- Balston A-series, 2000-series, and equivalent filter assemblies
Compatibility & Replacements
Compatible With
- Balston A15/80 series filter assemblies
- Balston 2000-series pneumatic filters
- Balston 2100-series and 2200-series compressed air filters
- Any filter housing with standard 1/4″ or 3/8″ NPT differential pressure ports
- Parker Hannifin pneumatic filter systems
Replaces / Drop-In Replacement For
- Original equipment differential pressure indicators on Balston filter bowls
- Previous-generation mechanical DPI units in 250 PSIG systems
- Verify compatibility with your specific filter assembly before ordering
Works With
- Standard compressed air filtration systems (no software integration)
- Industrial pneumatic networks operating 0–250 PSIG
- Plant maintenance and condition-monitoring routines



