This document describes the features and characteristics of the Bosch Rexroth AG throttle valve and throttle check valve types MG and MK, including size, operating pressure, maximum flow, etc.
This manual describes the MG (throttle valve) and MK (throttle check valve) products from Bosch Rexroth. Both valve types are pressure‑ and viscosity‑dependent and are offered in sizes 6 – 30 mm with a maximum operating pressure of 315 bar. The document includes ordering codes, seal material options, and functional descriptions of the throttling mechanism.
Technical data such as weight, ambient temperature ranges, pressure‑fluid specifications, viscosity ranges, and unit dimensions are listed. Characteristic flow curves and dimensions for each size are provided, along with information on spare parts and recommended filter data sheets.
| Size range | 6 to 30 mm |
|---|---|
| Maximum operating pressure | 315 bar |
| Cracking pressure (type MK) | 0.5 bar |
| Maximum volume flow | See characteristic curves page 5 |
| Ambient temperature range (NBR seals) | -30 °C to +80 °C |
| Ambient temperature range (FKM seals) | -20 °C to +80 °C |
| Seal material options | NBR seals, FKM seals |
| Viscosity range | 10 to 800 mm²/s |
| Cleanliness class | Class 20/18/15 |
The maximum operating pressure is 315 bar.
Sizes 6, 8, 10, 15, 20, 25, and 30 mm are offered.
NBR seals are standard, and FKM seals are available on request.
The cracking pressure for type MK is 0.5 bar.