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The KBCG3L250DZM13APE7H110P15T12 proportional pressure relief valve is produced by Vickers for the Proportional Valves series. It modulates hydraulic line pressure in automation systems to prevent overload while maintaining commanded pressure levels. The unit is built in a single-stage configuration, so pressure adjustment occurs in one throttling section. A subplate mounting footprint conforming to ISO 4401-03 (NFPA D03, CETOP 3) fits standard manifolds and reduces plumbing. Electrical control is provided through a 7-pin PE7 connector that receives a ±10 V command signal, and the internal circuits operate from a 24 V DC supply. On-board electronics translate the analog reference into proportional solenoid current, eliminating external amplifiers and simplifying cabinet wiring.
The valve tolerates system pressures up to 350 bar but limits the controlled outlet to 250 bar to protect downstream components. Flow capacity reaches 5 L/min, with a rated flow of 1 L/min giving best linear response to the command. The tank port is rated for 210 bar, allowing operation with elevated return pressures. Required fluid cleanliness is 17/15/12 according to ISO 4406, preventing wear and sticking. The design operates between −20 °C and 70 °C, covering typical mobile and industrial temperature ranges. These limits ensure stable proportional relief performance across its specified pressure, flow, and environmental conditions.
Command Input
±10 V
Electrical Connection
7-Pin Connector With Plug (PE7)
Fluid Cleanliness
17/15/12 (ISO 4406)
Interface
ISO 4401-03 (NFPA D03, CETOP 3)
Max Controlled Pressure
250 bar
Maximum Flow
5 L/min
Maximum Pressure
350 bar
On-board Electronics
Yes
Rated Flow
1 L/min
Stage
Single Stage
Supply Voltage
24 V DC
Tank Port Rating
210 bar
Valve Mount Type
Subplate
Valve Type
Proportional Pressure Relief
Working Temp Max
70 °C
Working Temp Min
-20 °C
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