Fluid end using cartridge check valve and wedge retention system

1 . An arrangement, comprising:

a block configured with at least one vertical bore;

a component stack, the component stack having:

at least a first check valve and a second check valve inserted into the at least one vertical bore;

a cross piece positioned in the at least one vertical bore positioned between the first check valve and the second check valve, wherein the cross-piece is removeable from above the vertical bore and through the at least one vertical bore;

a lower seal positioned at one end of the at least one vertical bore and an upper seal positioned at another end of the at least one vertical bore; and

at least one piston configured to reciprocate within the block; and

a wedge retaining system configured to interface with the block and secured to the block with a bolted connection; and

wherein a bottom of the wedge retaining system is configured to interface with the upper seal, wherein the wedge retaining system is in a form of an inclined plane that is attached to the block through a mechanical attachment, wherein the mechanical attachment comprises the bolted connection; and

wherein the wedge retention system is removably horizontally.

2 . The arrangement according to claim 1 , wherein the piston is configured to reciprocate in an axis different than the at least one vertical bore.

3 . The arrangement according to claim 1 , wherein at least one of the first check valve and the second check valve is a cartridge design.

4 . The arrangement according to claim 3 , wherein at least one of the first and second check valve is configured with a hemispherical end.

5 . The arrangement according to claim 1 , wherein the vertical bore is cylindrical.

6 . The arrangement according to claim 1 , where the second check valve is landed on a ledge at a bottom of the vertical bore.

7 . An arrangement, comprising:

a block configured with at least one vertical bore and at least one horizontal bore;

a component stack, the component stack having:

at least a first check valve and a second check valve inserted into the at least one vertical bore;

a cross piece positioned in the at least one vertical bore positioned between the first check valve and the second check valve, wherein the cross piece is removable through the at least one vertical bore and in a direction perpendicular to the horizontal bore;

a lower seal positioned at one end of the at least one vertical bore and an upper seal positioned at another end of the at least one vertical bore; and

at least one piston configured to reciprocate within the block; and

a wedge retaining system configured to interface with the block and

wherein a bottom of the wedge retaining system is configured to interface with the upper seal and wherein at least one of the first check valve and the second check valve comprise an outer body defining an inner volume;

wherein the wedge retention system compress the component stack to seat the lower seal and upper seal and form metal-to-metal contact among all components of the component stack;

an outlet configured to interface with at least a portion of the outer body and downstream from the outer body wherein at least one of the upper seal or the lower seal is configured to interface with the outlet;

a guide stem;

a center core configured within the inner volume of the outer body;

a spring configured to interface with a channel in the center core; and

a valve end with a channel configured to accept a portion of the spring;

wherein upon a predefined pressure and pressures greater than the predefined pressure, the center core is configured to move within the outer body creating a fluid pathway and wherein the guide stem is configured to extend from the valve end to the center core.

8 . The arrangement according to claim 7 , wherein the wedge retaining system is configured with a bolted connection to connect the wedge retaining system to the block.

9 . The arrangement according to claim 7 , wherein the piston is configured to reciprocate in an axis different than the at least one vertical bore.

10 . The arrangement according to claim 7 , wherein at least one of the first check valve and the second check valve is a cartridge design.

11 . The arrangement according to claim 10 , wherein at least one of the first and second check valve is configured with a hemispherical end.

12 . The arrangement according to claim 7 , wherein the vertical bore is cylindrical.

13 . The arrangement according to claim 7 , wherein the second check valve is landed on a ledge at a bottom of the vertical bore.

14 . A cartridge check valve, comprising:

an outer body defining an inner volume;

a fluid outlet configured to interface with at least a portion of the outer body, wherein the fluid outlet is downstream of the outer body;

a seal positioned at least partially around the fluid outlet;

a guide stem;

a center core configured within the inner volume of the outer body, wherein the center core houses a bearing which is positioned at a midpoint of the guide stem;

a spring configured to interface with the center core, wherein the spring is directly connected to a valve end and the bearing is positioned inside the spring; and

the valve end configured to interface with the spring; wherein upon a predefined pressure and pressures greater than the predefined pressure, the center core is configured to move within the outer body creating a fluid pathway and wherein the guide stem is configured to extend from the valve end to the center core, the spring further configured to directly interface with a channel in the valve end.

15 . The cartridge check valve according to claim 14 , wherein the cartridge check valve further comprises a second bearing is positioned on a side opposite of the center core from the bearing.

16 . The cartridge check valve according to claim 14 , wherein the cartridge check valve is made of carbon steel.

17 . The cartridge check valve according to claim 14 , wherein the valve end is configured in a hemispherical shape.