HDC Flow Valves: A Cost-Effective Alternative to Rexroth, Yuken, Parker & Eaton Vickers
Flow control is where circuit timing, actuator speed, and cycle repeatability get set, restrictive check valves, throttle valves, and 2-way flow controls are on almost every hydraulic manifold, and almost always sold under a legacy brand at a legacy price.
Hydrodynamics stocks the HDC flow valve range, built to the same mounting and function classes as Rexroth, Yuken, Parker, and Eaton Vickers flow valves — at a significantly lower landed cost, with local availability.
Restrictive & restrictive check valves
Function | HDC Code | Rexroth | Yuken | Parker | Eaton Vickers |
Restrictive valve / restrictive check valve | MG/MK...1XJ | MG/MK | CIT / CRT / CJ | CV / C6 | CVCS / KCG |
Restrictor valve / check restrictor valve | DV/DRV...1XJ | DV/DRV | GCT (throttle valve) | PFCS/FCS (throttle valve) | FG (throttle valve) |
Modular restrictive check valves
Function | HDC Code | Rexroth |
Modular restrictive check valve, NG6 | Z2FS6...4XJ | Z2FS6 |
Modular restrictive check valve, NG10 | Z2FS10...3XJ | Z2FS10 |
Modular restrictive check valve, NG16 | Z2FS16...3XJ | Z2FS16 |
Modular restrictive check valve, NG22 | Z2FS22...3XJ | Z2FS22 |
These stackable check valves are strongly standardised on Rexroth's modular pattern. Yuken, Parker, and Eaton Vickers all offer stack-style check valves in the same size classes, but the match is a looser functional one — confirm your stack bolt pattern before ordering.
2-way flow control valves
Function | HDC Code | Rexroth | Yuken | Parker | Eaton Vickers |
Two-way flow control valve, size 5 | 2FRM5...3XJ | 2FRM5 | FCG (2-way flow control) | PC/PFC (2-way flow control) | FG-06/10 (2-way flow control) |
Two-way flow control valve, size 6 | 2FRM6...3XJ | 2FRM6 | FCG (2-way flow control) | PC/PFC (2-way flow control) | FG-06/10 (2-way flow control) |
Two-way flow control valve | 2FRM...2XJ | 2FRM | FCG (2-way flow control) | PC/PFC (2-way flow control) | FG-06/10 (2-way flow control) |
Modular flow control valves
Function | HDC Code | Rexroth |
Modular two-way flow control valve, NG6 | Z2FRM6...2XJ | Z2FRM6 |
Modular two-way flow control valve, NG10 | Z2FRM10...2XJ | Z2FRM10 |
As with the modular check valves above, Yuken, Parker, and Eaton Vickers each have a stack-flow-control option in this size range, but it's a weaker cross-brand match than the Rexroth pattern — worth an engineering check before you spec a swap.
Balanced valve
Function | HDC Code | Rexroth | Yuken | Parker | Eaton Vickers |
Balanced valve | FD...1XJ | FD | BG (balanced piston) | R4V (balanced piston) | CG/CS/CT (balanced piston) |
A note on how to read this table
Where we've matched an HDC flow valve to a Rexroth, Yuken, Parker, or Eaton Vickers family, it means they serve the same function in the same general size class, same restrictive, throttle, or flow-control role, not that internal metering design or exact flow curves are identical. Flow valves are sensitive to exact orifice/metering characteristics, so before ordering a replacement, send us:
Rated flow range and pressure drop requirement
Cavity or manifold mounting pattern (inline, modular stack, or subplate)
Whether you need a check function combined with the restrictor
Adjustment type (knob, screw, or fixed orifice)
We'll confirm the right HDC configuration before you commit to an order.
Why source your flow valves from Hydrodynamics
Local stock on the standard restrictive check, throttle, and 2-way flow control ranges — no long OEM lead times for routine replacements.
Lower landed cost than Rexroth, Yuken, Parker, or Eaton Vickers equivalents, at industrial duty specification.
Configuration checked before dispatch — send your nameplate photo or drawing and we'll verify fit.
Get a quote or a technical cross-check: www.hydrodynamics.co.za
Rexroth, Yuken, Parker, and Eaton Vickers, and the model designations referenced above, are trademarks of their respective owners and are used here for cross-reference and compatibility purposes only. Hydrodynamics is an independent supplier of HDC hydraulic valves and is not an authorised distributor of, endorsed by, or affiliated with Rexroth, Yuken, Parker, or Eaton Vickers. Always verify exact configuration, flow rating, porting, and cavity dimensions before specifying a replacement valve.
