V20NF 1D7T 138C4H 22T

The V20NF 1D7T 138C4H 22T pump belongs to the Square Vane Pumps series manufactured by Vickers and supplies fixed-displacement flow for hydraulic automation loops. Its displacement is 22.8 cm³ per revolution (1.39 in³/rev), so each shaft turn delivers a defined volume that simplifies actuator speed calculations. A rated capacity of 7 US gpm at 1200 rpm and 100 psi provides the basic flow reference for circuit sizing. The unit tolerates a maximum operating pressure of 172 bar (2500 psi), allowing use in medium-pressure mobile and industrial systems. A 2-bolt flange, code 1, secures the housing to standard drive pads, while the 1-5/16-12 UN straight-thread inlet, code D, accepts O-ring fittings that prevent aeration on the suction side.

Discharge plumbing is handled by a 3/4-16 UNF outlet on the flow-control cover, code T, giving an easy connection point for pressure lines. Because the outlet sits in line with the inlet at position C, hoses can follow a simple axial path that saves space inside compact machines. A built-in No. 4 flow-control orifice restricts bypass to 15 L/min (4 US gpm), trimming transient spikes after sudden load changes. Over-pressure protection is provided by an internal relief valve preset to 140 bar (2000 psi) under code H, so no separate safety valve is required. These characteristics let the pump integrate quickly into automated circuits that demand stable flow, straightforward mounting, and self-contained pressure control.