HCV-RD-040-315-024 Pressure Reducing Valve — HCIC
HCV-RD-040-315-024 is an HCIC pressure control / reducing with a published rated flow of 40 L/min, a maximum operating pressure of 315 bar, and a Subplate / ISO 4401 interface. It carries PARKER ZDR as its cross-reference number and is used primarily for multi-pressure machine tools. Comparison figures are drawn from published technical literature and labelled with their data grade.
Cross number & interchangeability
| Product brand | HCIC |
|---|---|
| HCIC model / part number | HCV-RD-040-315-024 |
| Cross number (replaceable reference) | PARKER ZDR |
| Cross-reference manufacturer | Parker Hannifin |
| Cross-reference model | ZDR |
| Cross-reference family | ZDR |
| Relationship | Cross reference / selection alternative — interchangeability to be verified |
| Cross-reference source | S22 — https://discover.parker.com/DCV |
Product image
Technical drawings & circuit symbol
Hydraulic circuit symbol
Outline dimensional drawing
Mounting interface / cavity
At a glance — key facts
| What is this product? | HCV-RD-040-315-024 is an HCIC pressure control / reducing. |
| Which model does it cross-reference? | PARKER ZDR (Parker Hannifin ZDR) — identification only, not a certified interchange. |
| Is this an original OEM part? | No. This is an HCIC product; the referenced manufacturer name and model are used as a cross number only. |
| What is the rated flow? | 40 L/min |
| What is the maximum operating pressure? | 315 bar |
| What mounting / cavity does it use? | Subplate / ISO 4401 |
| What are the outline dimensions? | L 205 mm |
| What is it used for? | Typical applications: multi-pressure machine tools; mobile machine auxiliary functions; pilot pressure supply for proportional valve stacks. |
| Where do the comparison figures come from? | Official series catalogue / selection table - parameters are series ratings (source S22). |
Technical specifications
| Rated / nominal flow | 40 L/min |
|---|---|
| Rated flow (US) | 11 US gpm |
| Max. operating pressure | 315 bar |
| Max. operating pressure (US) | 4569 psi |
| Mounting / interface | Subplate / ISO 4401 |
| Fluid (series typical) | Hydraulic oil per DIN 51524; water glycol on request |
| Fluid temperature (series typical) | -20 to +70 C (NBR -25 to +70 C) |
| Viscosity (series typical) | 2.8 - 400 cSt; 30 - 80 cSt recommended |
| Cleanliness target (series typical) | ISO 4406 18/16/13 |
Data grade: Official series catalogue / selection table - parameters are series ratings
Dimensions & mounting data
| L | 205 mm |
|---|---|
| W | 45 mm |
| H | 70 mm |
Mounting interface — ISO 4401:2005 subplate interface
| Pattern | 4401-03-02-0-05 |
|---|---|
| Max Port Diameter Mm | 7.5 |
| Fastening | 4 x M5, 7-10 Nm |
Envelope basis: series-typical · Interface basis: standard-interface · DOC06 - ISO 4401-03 / NG06 / CETOP 3 mounting interface coordinates
Function
Reduces a higher primary pressure at the inlet to a controlled lower pressure at the outlet. The valve is normally open and closes progressively as downstream pressure reaches the setting, making it suitable for secondary circuits fed from a high-pressure main.
Key features
- Air-controlled versions for pneumatic remote setting
- Drilled-piston-orifice versions for improved stability with viscous fluid
- Normally open design for constant downstream pressure regulation
- Direct-acting and pilot-operated variants across multiple frame sizes
- Inlet pressure capability to 350 bar with reduced pressure settings to 315 bar
Typical applications
- Multi-pressure machine tools
- Mobile machine auxiliary functions
- Pilot pressure supply for proportional valve stacks
- Clamping and fixture circuits requiring lower pressure
- Brake and steering secondary circuits
Selection & commissioning notes
- Provide an external drain where the spring chamber cannot tolerate back pressure.
- Check the minimum controllable pressure and the pilot flow requirement before sizing a pilot-operated version for a low-flow circuit.
- A reducing valve regulates downstream pressure; it cannot relieve a downstream load-induced pressure rise unless it is a reducing/relieving design or a separate relief is fitted.
Request a quote — 48-hour turnaround
MOQ 1 piece (samples charged, sample fee not refunded against later orders); T/T 30% deposit + 70% before shipment; 18-month warranty; quotes within 48 hours; lead time 45-60 days for samples and 30-45 days for batch orders of 50+ pieces; standard and in-stock items ship faster. Designed to ISO 6020 / 6022 / 10100. Contact davidsong@mail.huachen.cc or +86 153 7619 8599.
Frequently asked questions
Why does my reduced pressure creep upward?
Common causes are internal leakage across the reducing spool, a blocked drain port, or a downstream load that back-feeds the circuit. Fit a reducing/relieving model or an external relief.
Can the setting be adjusted remotely?
Yes. Main-stage cartridges with an integral T-8A pilot cavity accept proportional, solenoid or air-piloted pressure controls for remote adjustment.
Is a pressure reducing valve normally open or normally closed?
Pressure reducing valves are normally open. They throttle closed as downstream pressure rises to the set value, whereas relief valves are normally closed and open as pressure rises.
Is HCV-RD-040-315-024 a genuine Parker Hannifin part?
No. HCV-RD-040-315-024 is an HCIC product. Parker Hannifin ZDR is provided only as a cross-reference number for identification. HCIC is not affiliated with, endorsed by, or an authorised distributor of Parker Hannifin. Verify all dimensions, ratings and settings before any substitution.
Can HCV-RD-040-315-024 be used in place of PARKER ZDR?
It is listed as a cross reference, not a certified drop-in replacement. Compare the cavity or mounting pattern, rated flow, maximum pressure, pilot ratio or spool function, seal material and pressure setting with the installed unit, and confirm with an HCIC engineer before ordering. Refer to the dimensions and interface drawings on this page.
Provenance & data quality
HCIC model: HCV-RD-040-315-024 · Brand: HCIC · Cross number: PARKER ZDR (Parker Hannifin ZDR, ZDR family — identification reference only)
Source ID: S22 · Source type: manufacturer · Date modified: 2026-11-13
Data grade: Official series catalogue / selection table - parameters are series ratings
Authoritative source: https://discover.parker.com/DCV