Product Description
Specifications
| Part number | RS4/30 | Brand | Duplomatic MS |
| Valve type | Bidirectional throttle flow control valve | Series | 30 |
| Nominal size (RS series) | 1/2" BSP | Mounting | In-line, threaded ports |
| Nominal flow rate | 50 l/min | Maximum operating pressure | 400 bar |
| Hydraulic connections | 2 × 1/2" BSP threaded ports | Flow function | Adjustable throttling in both directions |
| Adjustment | Hand knob with transverse locking grub screw | Seal material | NBR, standard version without V suffix |
| Shut-off function | Good sealing when fully closed | Catalogue mass | 0.6 kg |
| Ambient temperature | −20 to +50 °C | Fluid temperature | −20 to +80 °C |
| Viscosity range / recommended | 10–400 / 25 cSt | Fluid cleanliness | ISO 4406:1999, class 20/18/15 |
| Body length, C | 68 mm | Body section, D | 30 mm |
| Maximum overall height, E | 107 mm | Knob diameter, ØF | 80 mm |
Duplomatic RS4/30 bidirectional throttle valve
RS4/30 is a manually adjustable throttle flow control valve for in-line installation with 1/2" BSP ports. A conical throttle operating in a cylindrical seat regulates flow in both directions. The standard hand knob is included and can be locked with the transverse grub screw.
Nominal flow is 50 l/min and maximum operating pressure is 400 bar. These catalogue values are measured with mineral oil at 36 cSt and 50 °C. Flow through a throttle depends on pressure drop, opening and oil viscosity; this valve does not provide pressure-compensated flow regulation or a free-flow check-valve bypass. Fully closing the valve provides good sealing for flow shut-off.
The threaded body is supplied for direct installation in the hydraulic line. Body dimensions are C = 68 mm, D = 30 mm and E max = 107 mm; adjustment knob diameter is 80 mm. Standard NBR seals are intended for HL/HM mineral hydraulic oil; the FPM option carries the separate /V suffix.
IMPEX CONNECT supplies Duplomatic RS throttle valves for hydraulic speed and flow adjustment. Match the installation type, connection or cavity, flow requirement and pressure before ordering. The CAD view is the primary image; the supplementary photograph illustrates the corresponding series construction. Availability and delivery are confirmed on request.