Distributor valve

A brake distributor valve comprising:

• a body defining a brake pipe passageway configured to be in fluid communication with a brake pipe, a reservoir passageway configured to be in fluid communication with a reservoir, and a reference pressure passageway configured to be in fluid communication with a reference pressure source;
• and
• a service accelerated release valve comprising a valve member having a first position where the brake pipe passageway is isolated from the reservoir passageway and a second position where the brake pipe passageway is in fluid communication with the reservoir passageway, the valve member configured to supply pressure from the reservoir passageway to the brake pipe passageway during a brake release event, wherein the valve member is actuated between the first and second positions based on a pressure within the reference pressure passageway,
• wherein the body defines a signal passageway configured to be in fluid communication with a signal pressure source, further comprising a switching valve having a first position where the service accelerated release valve is enabled and a second position where the service accelerated release valve is disabled, the switching valve moveable between the first position and the second position in response to the signal pressure source.