| CPC E21B 43/2607 (2020.05) [F04B 23/04 (2013.01); F04B 53/16 (2013.01)] | 30 Claims |

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1. A method comprising:
(a) inserting a coupling adapter into an inlet flow bore of a flow cross junction of a manifold of a fluid system;
(b) positioning a connection device of the coupling adapter outside of the inlet flow bore, the connection device to connect to an output of a pump of the fluid system; and
(c) compressing a retainer ring within a groove of the coupling adapter, thereby to restrict an axial movement of the coupling adapter, the groove positioned external to the flow cross junction.
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