Plunger and venting options
The catalogue identifies P for a pull type plunger and V for a high venting pressure option. Include these symbols from the existing nameplate when requesting a replacement.
Yuken pilot operated relief valves
BG and BT Series relief valves
Compare sub-plate and threaded pilot-operated relief valves. Select the valve size, flow rating and pressure setting for your hydraulic circuit.
BG / BTSub-plate or threaded connection
250 Kgf/cm²Maximum operating pressure
100–400 L/min.Maximum flow varies by model
5 modelsBG-03, BG-06, BG-10, BT-04 and BT-06
Control pressure and protect the circuit
Yuken B Series pilot-operated relief valves limit excessive hydraulic pressure and maintain the circuit pressure setting. A vent circuit allows remote pressure control or unloading.
BG models use sub-plate mounting in sizes 03, 06 and 10. BT models use threaded connections in sizes 04 and 06. Check the mounting arrangement together with the flow rating before choosing a replacement.
For remote pressure control, the manufacturer refers to the YBT-01 and YBG-01 remote control relief valves. Confirm the complete circuit configuration during selection.
Compare BG and BT models
| Model | Connection | Maximum flow | Maximum operating pressure |
|---|---|---|---|
| BG-03 | Sub-plate mounting | 100 L/min. | 250 Kgf/cm² |
| BT-04 | Threaded | 200 L/min. | 250 Kgf/cm² |
| BT-06 | Threaded | 200 L/min. | 250 Kgf/cm² |
| BG-06 | Sub-plate mounting | 200 L/min. | 250 Kgf/cm² |
| BG-10 | Sub-plate mounting | 400 L/min. | 250 Kgf/cm² |
The minimum adjustable pressure depends on flow and the catalogue’s minimum adjustment pressure characteristics. Confirm the required operating point; the maximum pressure rating does not define the full usable adjustment range.
Mounting and ordering options
| BG model | Mounting interface | Catalogue sub-plates |
|---|---|---|
| BG-03 | ISO 6264 AR-06-2-A | BGM-03-3080: 3/8 BSP.F BGM-03X-3080: 1/2 BSP.F |
| BG-06 | ISO 6264 AS-08-2-A | BGM-06-3080: 3/4 BSP.F BGM-06X-3080: 1 BSP.F |
| BG-10 | ISO 6264 AT-10-2-A | BGM-10-3080: 1-1/4 BSP.F BGM-10X-3080: 1-1/2 BSP.F |
Fluid and seal selection
An F prefix identifies special seals for phosphate ester fluid. The manufacturer requires consultation before ordering this configuration. Send the fluid details with your enquiry.
Confirm the complete model code, connection dimensions and sub-plate requirement against the catalogue drawing before ordering.
Selection support
Share the pressure and flow requirements
Send the existing valve nameplate or circuit drawing so the mounting and control arrangement can be checked before quotation.
- Complete BG or BT model code and valve size
- Required pressure setting and operating flow
- Sub-plate mounting or threaded connection
- Vent circuit and remote-control requirement
- Fluid, seal option and installation drawing
- Quantity and required timing
BG and BT relief-valve catalogue
Review specifications, model designation, pressure characteristics, sub-plates and mounting dimensions.
Enquire about BG and BT relief valves
Send your model code and circuit details to Shree Hydraulics in Belagavi for product selection and quotation enquiries across India.