Easy-control valve

4) A shortened switching angle ball valve, comprising:

• a valve body having a fixed, slightly tapered cylindrical socket wall in the conduction path region with the cylindrical axis not parallel and preferably perpendicular to the valve conduction direction, so that the said socket wall could block the valve conduction should the wall stayed solid, and having grid pattern with slots on the tapered cylindrical wall running far from perpendicular to the cylindrical axis, usually parallel to the cylindrical axis should the cylindrical wall is not tapered;
• a conforming tapered cylindrical plug, having an identical grid pattern, tightly fit and slide-able co-axially with respect to the socket wall when the plug rotates;
• and
• an adjustable spring, explicit or implicit, loading on top of the plug, pressing the plug tightly into the conforming tapered cylindrical socket wall.

6) A time delayed recovery, automatic circuit breaker, comprising:

• an electrical insulating mounting base within a thermal insulation shell;
• a bimetallic strip contact switch, having one end tied to an external lead fixed on one end of the mounting base and the other end touching the contact pad deposited on the other end of the mounting base, configured such that, at ambient temperatures, the strip is having certain moderate pressure firmly pushing against the contact pad and tripping off the contact pad when enough radiations from both or either of the following resisters are received;
• a low value series resister, connected between the contact pad and another external lead, arranged side by side with the said bimetallic strip, having resistance value low enough not to adversely affect the function of the device to be protected but high enough to generate the required heat;
• and
• a high value parallel resister, connected between the two external leads, having resistance value above mega ohms so that the maintaining current is negligible for the system to bear while making up the required thermal budget balance in case of thermal insulation deficiency.
• Either the low value resister may include values near zero (simple lead) or the high value resister may include values near infinite (open circuit), but not both reaching the extremes in a same case.

7) A gate type Easy-Control Valve, comprising:

• a shortened switching length gate valve claimed in claim (3);
• driven by
• two solenoids, positioned in top and bottom sides of the valve hub, one for opening and the other for closing the subject valve, wherein their mounting plates also serve as the ultimate seal for the valve;
• and each solenoid is protected by
• a time delayed recovery automatic circuit breaker claimed in claim (6) so that the solenoids can be much reduced in size as for a true low duty time impulse type.

8) A ball type Easy-Control Valve, comprising:

• a shortened switching angle ball valve claimed in claim (4);
• driven by
• two solenoids, positioned in opposite sides of the switching arm, one for opening and the other for closing the subject valve;
• and each solenoid is protected by
• a time delayed recovery automatic circuit breaker claimed in claim (6) so that the solenoids can be much reduced in size as for a true low duty time impulse type.