Product Description
| Manufacturer | Duplomatic MS | Model / ordering code | P4D-RQM5-6/M/30N-A230K1 |
| Assembly type | Modular subplate with pressure relief and solenoid unloading | Relief valve nominal size | ND 25 |
| Maximum operating pressure | 350 bar | Pressure adjustment upper limit | 350 bar (code 6) |
| Maximum relief flow through additional P port | 250 l/min | Maximum flow to modular subplates (P1/T1) | 120 l/min |
| Minimum catalogue flow | 10 l/min | Pressure adjustment | SICBLOC push-and-turn knob (/M) |
| Solenoid supply | 230 V AC, 50 Hz / 240 V AC, 60 Hz | Electrical interface | K1, EN 175301-803 (ex DIN 43650) |
| Connector included | No; electrical connector ordered separately | Solenoid manual override | Manual override integrated in the tube |
| Pressure ports P | 3/4 inch BSP | Tank ports T | 1 inch BSP |
| Modular ports P1 / T1 | 1/2 inch | Gauge port M | 1/4 inch BSP |
| Mounting surfaces | P2D: ISO 4401-03; P4D: ISO 4401-05 | Seal material | NBR (N), mineral oil HL/HM |
| Design series | 30; overall and mounting dimensions unchanged for 30–39 | Approximate catalogue mass | 10 kg |
| Ambient temperature | -20 to +50 °C | Fluid temperature | -20 to +80 °C |
| Fluid viscosity | 10–400 cSt; recommended 25 cSt | Fluid cleanliness | ISO 4406:1999 class 20/18/15 |
P4D-RQM5-6/M/30N-A230K1 — modular pressure relief and unloading assembly
The Duplomatic P4D-RQM5-6/M/30N-A230K1 combines a pressure relief valve with an electrically operated unloading valve and a modular subplate for hydraulic valve assemblies. It provides mounting surfaces for P2D ISO 4401-03 and P4D ISO 4401-05 subplates. This NBR-sealed version has a pressure adjustment upper limit of 350 bar, 230 V AC, 50 Hz / 240 V AC, 60 Hz, and SICBLOC knob adjustment.
The assembly is rated for a maximum operating pressure of 350 bar. The selected adjustment limit is a different parameter: code 5 identifies the 250 bar version and code 6 the 350 bar version. Minimum controlled pressure depends on flow; consult the catalogue curve rather than assuming regulation down to zero pressure.
The catalogue permits up to 250 l/min through the pressure relief valve using the additional 3/4 inch BSP P port, but limits flow to the P1 port supplying P2D/P4D modular subplates to 120 l/min. The listed minimum flow is 10 l/min. The solenoid unloading function vents the total flow at a low residual pressure; this is a pressure-control assembly, not a compensated flow regulator.
Adjustment and installation
The /M SICBLOC knob is operated by pushing and turning together. This version uses the standard manual override integrated in the solenoid tube. Pressure adjustment and solenoid manual override are separate options. K1 identifies the electrical connection interface; the mating connector is not included and must be ordered separately.
Check the full order code, supply voltage and frequency, port routing and available installation space before selecting a replacement. Standard NBR seals are intended for mineral hydraulic oils HL/HM according to ISO 6743-4. The attached CAD represents the matching external configuration; pressure ranges and voltages sharing the same body and coil family have common external geometry.
IMPEX CONNECT accepts international B2B enquiries for this assembly. Availability, lead time and buyer-arranged collection are confirmed in the written quotation. Displayed prices exclude VAT.