Plug Valve

1 . A plug valve, comprising:

a valve body having a first end defining a set of holes and a first port and a second port;

an actuator having a portion defining a set of holes;

an adapter having an actuator end, a valve body end and a stem chamber extending through said adapter, the valve body end attached to the first end of the valve body by a member extending through a set of holes defined on a portion of said valve body end corresponding to a set of holes of the valve body, said actuator end of said adapter attached to said actuator by a member extending through a set of holes of a portion of the actuator end of the adapter into the corresponding receiving set of holes in the actuator; and

a valve stem rotatably positioned in said stem chamber, said valve stem having a valve end for attaching a valve member having a communication hole for communicating with said first port and said second port.

2 . The plug valve according to claim 1 , wherein said set of holes of the adapter are spaced radially on the portion of the actuator end of said adapter conforming to a standard protocol.

3 . The plug valve according to claim 2 , wherein said standard protocol is the ISO standard spacing protocol for valve actuators.

4 . The plug valve according to claim 3 , wherein said portion of the adapter defines an additional set of holes for attaching an actuator, wherein a different spacing of the additional set of holes conforms to ISO standard spacing protocol.

5 . The plug valve according to claim 1 , wherein said portion of said actuator end of said adapter containing said set of holes is a flange.

6 . The plug valve according to claim 1 , wherein the valve end is a plug.

7 . The plug valve according to claim 1 , wherein said portion of said valve body end of said adapter containing the set of holes is a flange.

8 . The plug valve according to claim 1 , wherein said valve body end of the adapter defines a valve body cover.

9 . The plug valve according to claim 1 , wherein the adapter defines a bleedway extending through said adapter into said stem chamber.

10 . The plug valve according to claim 1 , wherein the bleedway is in communication with a seal surrounding the stem chamber.

11 . An actuator adapter, comprising:

a body having an actuator end and a valve body end; and

said body having a stem chamber extending therethrough, said valve body end of body defining a valve body cover and having a portion defining a set of holes for attaching said body to a valve body, said actuator end of body having a portion defining a set of holes for attaching the adapter to an actuator.

12 . The actuator adapter according to claim 11 , wherein said set of holes of the adapter are spaced radially on the portion of the actuator end of said adapter conforming to a standard spacing protocol.

13 . The actuator adapter according to claim 12 , wherein said standard protocol is the ISO standard spacing protocol for valve actuators.

14 . The actuator adapter according to claim 12 , wherein said portion of the actuator end of said body having said set of holes is a flange.

15 . The actuator adapter according to claim 12 , wherein said portion of the actuator end defines an additional set of holes for attaching an actuator, wherein a different spacing of the additional set of holes conforms to ISO standard spacing protocol.

16 . The actuator adapter according to claim 11 , wherein said portion of the valve body end of said body is a flange.

17 . The actuator adapter according to claim 11 , wherein the body has a bleedway extending through said body into said stem chamber.

18 . A method for assembling a valve plug, comprising:

providing a valve body having an upper end defining a set of holes and a valve cylinder having a first port at one end thereof and a second port on an opposite end thereof;

providing an actuator having a portion defining a set of receiving holes;

providing an adapter having an actuator end, a valve body cover end and a stem chamber extending through said adapter, said actuator end having a flanged portion defining a set of holes corresponding to said set of receiving holes of the actuator, said valve body cover end having a flanged portion defining a set of holes;

attaching said valve body cover end of the adapter to the upper end of said valve body; and

attaching said actuator end of the adapter to said actuator by extending a member through one hole of a set of holes of the adapter and then the receiving set of holes of the actuator.

19 . A method according to claim 18 , wherein said set of holes of said flanged portion of said actuator end of the adapter are conforming to ISO standard spacing.

20 . A method for detecting faulty packing in a plug valve, comprising:

providing a valve body having a first end, a second end and a set of holes defined on the first end, defining a valve cylinder having an inlet port at one end thereof and an outlet port thereon;

providing a valve stem having a valve plug on the distal end;

providing an actuator defining a set of receiving holes;

providing an adapter having an actuator end, a valve body end and a stem chamber extending through said adapter, said actuator end having a flanged portion defining a set of holes for receiving a member and defining a bleedway in an area between said actuator and valve body end;

placing said adapter over said stem valve where the valve stem contacts a seal inside said chamber of said adapter, said seal further contacts said adapter;

attaching said valve body end to the adapter;

attaching said actuator end of the adapter to said actuator by placing a member into said holes of said adapter and then into said holes of said actuator; and

penetrating, by a liquid, and passing through the bleedway.