High pressure fluid drain systems, devices, and methods

A fluid drain system for high pressure fuel systems, the fluid drain system comprising:

• a fluid filter drain valve comprising a first body and a second body, the first body being rotatably coupled to the second body,
• wherein the first body comprises a first quick-connect fitting, and the second body is configured to be coupled to a fluid filter,
• the fluid filter drain valve further comprising a fluid flow path through the second body and the first body, wherein the fluid flow path is selectively openable or closable by rotation of the first body with respect to the second body;
• and
• a fluid drain tool configured to be removably coupleable to the fluid filter drain valve for draining fluid through the fluid flow path and into the fluid drain tool, the fluid drain tool comprising:
• a drain bowl comprising a housing that defines a collection cavity, the drain bowl further comprising a drain cap removably coupled to the housing for draining collected fluid from the collection cavity;
• a second quick-connect fitting configured for removable coupling to the first quick-connect fitting of the first body of the fluid filter drain valve;
• an elongate flexible hose comprising a lumen that fluidly couples the second quick-connect fitting to the drain bowl, such that fluid collected from the fluid filter drain valve can be transferred through the lumen of the elongate flexible hose to the collection cavity of the drain bowl;
• and
• a selectively openable bleed valve coupled to the housing of the drain bowl, the selectively openable bleed valve having a first end in fluid communication with the collection cavity of the drain bowl, and a second end in fluid communication with an atmosphere.