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Rapco Ra2h3-5 FAA Approved Vacuum Regulator

FAA-PMA approved vacuum regulator with adjustable settings and garter filter for reliable aircraft instrument pressure control.

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Overview

The Rapco Ra2h3-5 vacuum regulator is an FAA-PMA approved component designed to maintain stable vacuum pressure for aircraft gyroscopic instruments. Consistent vacuum pressure is critical for the accurate operation of attitude indicators and heading indicators, and this regulator delivers adjustable control so pilots and mechanics can dial in the precise setting their instrument panel requires. The included garter filter (RAB3-5-1) adds a layer of protection by trapping contaminants before they can reach sensitive instrument internals or degrade the regulator itself.

Installation is straightforward thanks to the standard 5/8" hose fittings on both the pump and instrument connections. As a PMA-approved part, the Ra2h3-5 can be installed in certified aircraft without the need for a field approval or supplemental type certificate, making it a practical and compliant choice for vacuum system maintenance or overhaul. Whether you are replacing a worn regulator during an annual inspection or upgrading your vacuum system's reliability, this regulator provides the precision and regulatory compliance that general aviation demands.

Key Features

FAA Approved. Used in most General Aviation applications.

Specifications

Brand
Rapco
Model
Ra2h3-5
Type
Vacuum Regulator
Approval
FAA-PMA Approved
Features
Adjustable Setting, Garter Filter (RAB3-5-1)
Hose Fitting (Pump)
5/8"
Hose Fitting (Instruments)
5/8"

Pros & Cons

👍 Pros

  • FAA-PMA approved for use in certified aircraft, ensuring regulatory compliance
  • Adjustable vacuum setting allows fine-tuning to match specific instrument requirements
  • Includes a garter filter to protect against contaminants entering the vacuum system
  • Compatible 5/8" hose fittings on both pump and instrument sides simplify installation

👎 Cons

  • Limited to 5/8" hose fitting size, which may require adapters for systems with different port sizes
  • Designed for specific vacuum pressure ranges, so it may not suit all aircraft vacuum system configurations
  • Replacement garter filters add to long-term maintenance costs

Frequently Asked Questions

The Ra2h3-5 is designed to regulate vacuum pressure for gyroscopic flight instruments such as attitude indicators and heading indicators that depend on a consistent vacuum source.
It uses 5/8" hose fittings on both the pump side and the instrument side.
The included garter filter (RAB3-5-1) helps prevent contaminants from entering the vacuum system, protecting both the regulator and connected instruments from debris-related failures.
Yes, it is FAA-PMA approved, meaning it meets FAA standards as an approved replacement part for certified aircraft vacuum systems.
Yes, the Ra2h3-5 features an adjustable setting that allows you to fine-tune the regulated vacuum pressure to match your instrument requirements.

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