Product Description
| Manufacturer | Duplomatic MS | Model | RLM3A-A16/21N-D12K1/CK2 |
| Valve type | Electric fast/slow speed selection valve | Nominal size | NG6 / CETOP 03 |
| Mounting | Sandwich / modular, ISO 4401-03-02-0-05 | Maximum operating pressure | 250 bar |
| Flow control function | Meter-out control from actuator chamber A | Slow-flow adjustment range | 0.025-16 l/min |
| Solenoid bypass valve | Normally open (NO) | Maximum flow in free lines | 65 l/min |
| De-energized mode | Fast / bypass flow | Energized mode | Slow / regulated flow |
| Power supply | 12 V DC, ±10% | Coil connection | K1, EN 175301-803 (ex DIN 43650) |
| Coil power | 22 W | Nominal current | 1.84 A |
| Manual override | CK2 push-and-twist override | Seals | NBR |
| Ambient temperature | -20 to +50 °C | Fluid temperature | -20 to +80 °C |
| Fluid viscosity | 10-400 cSt; recommended 25 cSt | Cleanliness | ISO 4406:1999 class 20/18/15 |
| Duty cycle | 100% | Protection | IP65 with correctly installed matching connector |
| Switching time, energizing / de-energizing | 85 / 60 ms | Catalogue mass | 3.1 kg |
| Flow adjustment | Calibrated knob with locking screw | Design series | 21 |
RLM3A-A16/21N-D12K1/CK2 - Duplomatic electric fast/slow speed selection valve
RLM3A-A16/21N-D12K1/CK2 combines an RPC1 compensated flow regulator with a KT08 solenoid poppet bypass valve for switching between fast travel and an adjustable working speed. The slow-flow range is 0.025-16 l/min. The modular assembly mounts below ISO 4401-03 directional valves and operates at pressures up to 250 bar.
RLM3A regulates the outgoing flow from actuator chamber A. The selected configuration must match the actuator circuit and the directional valve above it.
The A version uses a normally open (no) solenoid bypass: without power the valve provides fast / bypass flow; when energized it provides slow / regulated flow. The 65 l/min rating refers to free lines, not the nominal slow-flow setting. Select the fast-flow operating point using the catalogue operating-limit curve.
CK2 provides push-and-twist manual operation of the solenoid bypass. To activate it, press and turn clockwise; to release it, press and turn in the opposite direction. The CK2 shape differs between NC and NO versions, and the CAD supplied for this product matches the selected version.
Electrical connection and installation
This NBR version uses a 12 V DC, 22 W coil with K1 connection. The electrical connector is ordered separately; IP65 requires a correctly connected matching connector. NBR seals are intended for mineral hydraulic oil HL/HM. Switching times are catalogue reference values measured with 36 cSt oil at 50 °C. The downloadable series 20 CAD represents the external mounting geometry; the catalogue states that overall and mounting dimensions remain unchanged for design series 20-29. Availability and delivery time are confirmed on request.