Permco DMD400-20-XL200 Dump Pump

How to adjust the flow when my bed is coming down?

Here is a helpful sheet to reference.

do you know what cubic inch displacement this has and do you have any literature on this? Thank you

G Series Direct Mount
CCW
3 Piece Cast Iron Design
High Pressure Shaft Seals
Factory Set 2000 PSI Relief w/ Load Check
Pressure Balanced Thrust Plates
Heavy Duty Roller Bearings
Two Or Three Line Hook Up
7/8 13 Tooth Spline Shaft
15 GPM at 1000 RPM to 37 GPM at 2400 RPM

These are all the specs we can supply.