VACCO ∆TEL Differential Pressure Indicator
VACCO Industries
A differential pressure indicator that provides visual or remote warning when a filter element is nearing the end of its service life, designed for reliability and high G-load transients.
Technical specifications
- Material
- Aluminum (std), Corrosion Resistant Steel (optional)
- Seals (Electrometric)
- Buna “N” (std), Viton (std), EPR (std), Others Upon Request
- Operating Pressure
- 5,000 psig
- Proof Pressure
- 7,000 psig
- Burst Pressure
- 12,500 psig
- Surge Control
- Optional
- Indicating Pressures
- 15 ± 2.5 psid, 25 ± 3.0 psid, 35 ± 5.0 psid, 50 ± 8.0 psid, 70 ± 10 psid, 100± 15 psid, 120 ± 20 psid, Others Upon Request
- Thermal Lockout
- 350 ± 150 °F, 560 ± 240 °F, 1000 ± 150 °F
- Shock Levels
- Excelling 50G along the longitudinal axis
- Standard
- Per MIL-F-8815
About
The VACCO ∆TEL Differential Pressure Indicator is designed to provide an indication or warning that a filter element is nearing the end of its service life. As the filter element loads with contaminant and flow remains consistent, the upstream pressure increases, creating a differential pressure across the element. Once a predetermined differential pressure is reached, the ∆TEL registers by extending a red button for visual indication. The VACCO design is also configurable to support remote signaling through an electrical interface. This indicator offers improved reliability, serviceability, and integrity by minimizing weight (low mass density). It is capable of reliable operation during high “G” load transients and can withstand shock levels exceeding 50G along the longitudinal axis. The design incorporates a pick-a-part configuration for easy disassembly/assembly without staking or crimping. The ∆TEL indicator meets or exceeds the applicable portions of MIL-F-8815. Indication is achieved by upstream pressure overcoming a spring-biased piston, which carries a pole magnet through a ring magnet, producing a toggle action for positive indication. The red indicator button remains actuated until manually reset. The ∆TEL design isolates the fluid area from the indicating portion via a machined barrier, eliminating potential leakage paths as there are no seals. It is also available with an optional thermal lockout feature to prevent indication during cold starts and an optional surge control to prevent indication during pressure transients. Standard material is Aluminum, with optional Corrosion Resistant Steel. Standard seals are Buna “N”, Viton, and EPR, with others available upon request.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.