Multi-stage high pressure flanged pump assembly

A pump assembly for use with a pumping system, the pump assembly comprising:

• a first pump module, wherein the first pump module comprises:
• a first housing, wherein the first housing comprises a first pair of external flanges located at opposing ends of the first housing;
• a head enclosed within the first housing;
• and
• a base enclosed within the first housing;
• and
• a second pump module connected to the first pump module, wherein the second pump module comprises:
• a second housing, wherein the second housing comprises a second pair of external flanges located at opposing ends of the second housing and wherein one of the second pair of external flanges is connected to one of the first pair of external flanges;
• a head enclosed within the second housing;
• and
• a base enclosed within the second housing.

A surface pumping assembly comprising:

• an electric motor;
• a support frame;
• a pump assembly connected to the electric motor and supported by the support frame, wherein the pump assembly comprises:
• a housing, wherein the housing comprises a tubular member having an exterior, an interior, an upstream end and a downstream end, wherein the housing comprises:
• interior base threads at the upstream end;
• interior head threads at the downstream end;
• an upstream flange connected to the exterior of the upstream end;
• and
• a downstream flange connected to the exterior of the downstream end;
• a base connected to the upstream end of the housing, wherein the base further comprises:
• a base flange connected to the upstream flange;
• and
• exterior base threads in mating engagement with the interior base threads;
• and
• a head connected to the downstream end of the housing, wherein the head further comprises:
• a head flange connected to the downstream flange;
• and
• exterior head threads in mating engagement with the interior head threads.