Valve member assembly

1. A valve member assembly for placement in a chamber of a valve body, the chamber extending between a bottom end defining an inlet port and an open top end of the valve body, the valve member assembly comprising:

a) a housing having,

i. a cup including a cup base defining a check valve seat for the inlet port of the valve body, and cup arms extending upwardly from the cup base,

ii. a retainer including a retainer base positioned above the cup base and connected to the cup arms, and retainer arms extending upwardly from the retainer base, and

iii. a bonnet including,

a bonnet base positioned above the retainer base and connected to the retainer arms, the bonnet base defining a float valve seat, and

a dome extending from the bonnet base for extending out of the open top end of the valve body when the valve member assembly is placed in the chamber of the valve body, the dome defining at least one vent;

b) a check valve assembly including,

i. a check valve member positioned between the cup base and the retainer base and including a shaft slidably extending through an opening in the retainer base, and

ii. a check spring positioned between the retainer base and the check valve member, biasing the check valve member against the inlet valve seat, and

c) a float valve assembly including,

i. a float valve member positioned between the bonnet base and the retainer base, and

ii. a float spring positioned between the dome of the bonnet and the float valve member, biasing the float valve member away from the float valve seat, wherein the retainer further includes a spring socket extending downwardly from the retainer base and the check spring is received in the spring socket.

2. A valve including the valve member assembly of claim 1 , and further comprising:

a) a valve body including,

an open top end,

a bottom end defining an inlet port,

a chamber extending from the open top end to the bottom end and connected to the inlet port,

an outlet port connected to the chamber through a sidewall of the body;

b) the valve member assembly removably positioned within the chamber of the valve body such that the check valve seat is placed over the inlet port of the valve body and the dome of the bonnet extends out of the open top end of the valve body;

c) a collar removable attached to the open top end of the valve body above the bonnet base to secure the valve member assembly in the chamber of the valve body; and

d) a canopy removable attached to the dome of the bonnet.

3. A valve member assembly according to claim 2 , further comprising a thermal expansion relief valve operatively positioned in the float valve member for allowing fluid to exit the chamber of the valve body through the open top end of the valve body when fluid pressure within the chamber exceeds a predetermined value.

4. A valve member assembly according to claim 1 , wherein the retainer base is releasably connected to the cup arms and the bonnet base is releasably connected to the retainer arms.

5. A valve member assembly according to claim 1 , further comprising means for connecting the retainer base to the cup arms and means for connecting the bonnet base to the retainer arms.

6. A valve member assembly according to claim 1 , wherein the float valve member includes a cylindrical guide extending downward towards the opening in the retainer base for receiving the shaft of the check valve member extending through the opening of the retainer base.

7. A valve member assembly according to claim 1 , wherein the retainer further includes a bowl formed in a top surface of the retainer base for receiving the cylindrical guide of the float valve member, and wherein the opening for the shaft of the check valve member is aligned with the bowl.

8. A valve member assembly comprising:

a) a housing having,

i. a cup including,

a cup base defining a check valve seat,

a cup rim spaced from the cup base, and

cup arms connecting the cup base to the cup rim,

ii. a retainer having,

a retainer base positioned on the cup rim,

a retainer rim spaced from the retainer base, and

retainer arms connecting the retainer base to the retainer rim,

the retainer base having radially extending projections alignable with radially extending projections of the cup rim to releasably secure the retainer to the base, and

iii. a bonnet including a bonnet base positioned on the retainer rim and defining a float valve seat, the bonnet base having radially extending projections alignable with radially extending projections of the retainer rim to releasably secure the bonnet to the retainer;

b) a check valve assembly positioned within the cup of the housing and including,

i. a check valve member including a shaft slidably extending through an opening in the retainer base, and

ii. a check spring biasing the check valve member away from the retainer and against the inlet valve seat; and

c) a float valve assembly positioned between the bonnet and the retainer of the housing and including,

i. a float valve member, and

ii. a float spring biasing the float valve member away from the float valve seat.

9. A valve member assembly according to claim 8 , further comprising a thermal expansion relief valve operatively positioned in the float valve member.

10. A valve member assembly according to claim 8 , wherein:

the radially extending projections of the cup rim extend inward and the radially extending projections of the retainer base extend outward, a portion of the retainer base extends into the cup rim, and the retainer can be rotated with respect to the cup to align the projections of the retainer base and the projections of the cup rim and releasably secure the retainer to the cup; and

the radially extending projections of the retainer rim extend outward and the radially extending projections of the bonnet base extend inward, the retainer rim is received in the bonnet base, and the bonnet can be rotated with respect to the retainer to align the projections of the bonnet base and the projections of the retainer rim and releasably secure the bonnet to the retainer.

11. A valve member assembly for placement in a chamber of a valve body, the chamber extending between a bottom end defining an inlet port and an open top end of the valve body, the valve member assembly comprising:

a) a housing having,

i. a cup including a cup base defining a check valve seat for the inlet port of the valve body, and cup arms extending upwardly from the cup base,

ii. a retainer including a retainer base positioned above the cup base and connected to the cup arms, and retainer arms extending upwardly from the retainer base, and

iii. a bonnet including,

a bonnet base positioned above the retainer base and connected to the retainer arms, the bonnet base defining a float valve seat, and

a dome extending from the bonnet base for extending out of the open top end of the valve body when the valve member assembly is placed in the chamber of the valve body, the dome defining at least one vent;

b) a check valve assembly including,

i. a check valve member positioned between the cup base and the retainer base and including a shaft slidably extending through an opening in the retainer base, and

ii. a check spring positioned between the retainer base and the check valve member, biasing the check valve member against the inlet valve seat;

c) a float valve assembly including,

i. a float valve member positioned between the bonnet base and the retainer base, and

ii. a float spring positioned between the dome of the bonnet and the float valve member, biasing the float valve member away from the float valve seat;

d) a valve body including,

i) an open top end,

ii) a bottom end defining an inlet port,

iii) a chamber extending from the open top end to the bottom end and connected to the inlet port, and

iv) an outlet port connected to the chamber through a sidewall of the body;

e) the valve member assembly removably positioned within the chamber of the valve body such that the check valve seat is placed over the inlet port of the valve body and the dome of the bonnet extends out of the open top end of the valve body;

f) a collar removable attached to the open top end of the valve body above the bonnet base to secure the valve member assembly in the chamber of the valve body; and

g) a canopy removable attached to the dome of the bonnet.

12. A valve member assembly according to claim 11 , wherein the retainer base is releasably connected to the cup arms and the bonnet base is releasably connected to the retainer arms.

13. A valve member assembly according to claim 11 , further comprising means for connecting the retainer base to the cup arms and means for connecting the bonnet base to the retainer arms.

14. A valve member assembly according to claim 11 , wherein the retainer further includes a spring socket extending downwardly from the retainer base and the check spring is received in the spring socket, wherein the retainer further includes a bowl formed in a top surface of the retainer base for receiving the cylindrical guide of the float valve member, and wherein the opening for the shaft of the check valve member is aligned with the bowl.

15. A valve member assembly according to claim 11 , wherein the float valve member includes a cylindrical guide extending downward towards the opening in the retainer base for receiving the shaft of the check valve member extending through the opening of the retainer base.

16. A valve member assembly for placement in a chamber of a valve body, the chamber extending between a bottom end defining an inlet port and an open top end of the valve body, the valve member assembly comprising:

a) a housing having,

i. a cup including a cup base defining a check valve seat for the inlet port of the valve body, and cup arms extending upwardly from the cup base,

ii. a retainer including a retainer base positioned above the cup base and connected to the cup arms, and retainer arms extending upwardly from the retainer base, and

iii. a bonnet including,

a bonnet base positioned above the retainer base and connected to the retainer arms, the bonnet base defining a float valve seat, and

a dome extending from the bonnet base for extending out of the open top end of the valve body when the valve member assembly is placed in the chamber of the valve body, the dome defining at least one vent;

b) a check valve assembly including,

i. a check valve member positioned between the cup base and the retainer base and including a shaft slidably extending through an opening in the retainer base, and

ii. a check spring positioned between the retainer base and the check valve member, biasing the check valve member against the inlet valve seat, and

c) a float valve assembly including,

i. a float valve member positioned between the bonnet base and the retainer base, and

ii. a float spring positioned between the dome of the bonnet and the float valve member, biasing the float valve member away from the float valve seat, wherein the float valve member includes a cylindrical guide extending downward towards the opening in the retainer base for receiving the shaft of the check valve member extending through the opening of the retainer base.

17. A valve including the valve member assembly of claim 16 , and further comprising:

a) a valve body including,

an open top end,

a bottom end defining an inlet port,

a chamber extending from the open top end to the bottom end and connected to the inlet port,

an outlet port connected to the chamber through a sidewall of the body;

b) the valve member assembly removably positioned within the chamber of the valve body such that the check valve seat is placed over the inlet port of the valve body and the dome of the bonnet extends out of the open top end of the valve body;

c) a collar removable attached to the open top end of the valve body above the bonnet base to secure the valve member assembly in the chamber of the valve body; and

d) a canopy removable attached to the dome of the bonnet.

18. A valve member assembly according to claim 16 , wherein the retainer base is releasably connected to the cup arms and the bonnet base is releasably connected to the retainer arms.

19. A valve member assembly according to claim 16 , further comprising means for connecting the retainer base to the cup arms and means for connecting the bonnet base to the retainer arms.