Piper 587-961 Pressure Switch

The 587-961 is exactly as the name states, i.e. a pressure switch (M-4011-35). This switch is specifically designed during the installation of engine instrumentation lines. Not all Piper aircraft are identical so check your parts catalog to figure out if this switch is compatible. For an illustrated example of this switch, please refer to pages 163 (1g20) and 165 (1g22) of the Dakota PA-28-236 Parts Catalog.