Fluid transfer with concurrent system movement for liquid and vacuum

A system comprised of:

• at least one sealable intermediate canister and one or more sealable portable canisters of differing volumetric size and differing partial vacuums;
• means for gravity liquid exchange between said intermediate and portable canisters;
• and
• means for vacuum equalization by a vacuum exchange between said portable canisters and said intermediate canister.

A fluid transfer method of exchanging liquid and vacuum in a closed system without exposing either liquid or vacuum to the atmosphere, said method comprising the steps of:

• containing a first vacuum and a liquid in a first sealed container;
• separately containing another liquid and second vacuum in a second sealed container;
• interconnecting the first and second sealed containers by a single liquid and vacuum conduit;
• and
• feeding liquid between the first and second containers through said conduit as the respective vacuums in said containers self-equalize.

An apparatus and system for portable transferring fluid from an external sump to an intermediate canister, and later in time from the intermediate canister to another waste receiving reservoir, said apparatus comprising;

• a pre-chargeable, sealable intermediate canister which may be evacuated to form a near absolute vacuum captured in the intermediate canister when the canister is disconnected from a vacuum source, and which canister may also be pressurized to capture and hold a positive pressure in said canister when the canister is disconnected from a pressure source;
• one or more pre-chargeable, sealable, smaller canisters which may be placed in temporary fluid and/or vacuum communication with said intermediate canister after said intermediate canister has been vacuum pre-charged;
• and
• closed system configuring means for exchanging both vacuum and fluid contents between said smaller canister and said intermediate canister.

A self-tending pressure or vacuum capture valve adapted for throughput connection to a container, which container may hold either a predetermined amount of vacuum or pressure, said valve comprising:

• a throughput path for applying either a vacuum or for closing against an applied pressure in the container;
• sealable port closure means operative for automatically capturing in said container either vacuum or pressure;
• and
• inhibiting means causing said closure means to remain dormant during evacuation of the container in a vacuum mode and yet operative, when the desired vacuum or pressure has been attained, for capture of said predetermined vacuum or pressure amount.

A self-tending valve connected to a container and having a pair of communicating ports through said valve and into said container, which container stores pressure and vacuum, said valve comprising:

• capture means operative in either a vacuum or a pressure mode for automatically capturing in said container either vacuum or a pressure amount equal to or in excess of a predetermined pressure threshold;
• means operative in conjunction with said capture means for causing said capture means to remain dormant during evacuation of the container in a vacuum mode;
• and
• said capture means responsive to said threshold means by capturing said pressure in said container when the amount of applied pressure in the container becomes equal to or higher than said predetermined threshold amount.