Fisher LR128 Regulator

The Fisher LR128 Regulator is a pilot-operated pressure relief and back-pressure regulator engineered for demanding liquid service applications. Unlike standard pressure-reducing devices, the Fisher LR128 Regulator maintains upstream pressure or provides reliable overpressure protection, making it suitable for water, fuel oil, lubricating oil, and a wide range of process liquids. Its durable metal valve plug, pilot assembly, and internal strainer ensure stable performance even in contaminated or high-load environments.

Pilot-Operated Control for highly accurate back-pressure or relief regulation

High Pressure Capability supporting inlet pressures up to 450 psig (31 bar)

Maintaining stable back-pressure in liquid systems


Systems with contaminated or particle-rich liquids
High-reliability liquid transfer systems
The Fisher LR128 Regulator is particularly valued in facilities that require precise liquid pressure stability combined with low maintenance demands.

LR128 Standard Configuration

Optional pilots, spring ranges, corrosion-resistant trims, and multiple end connections

Competitive pricing backed by multi-source supply channels

Short lead times with guaranteed on-time delivery

One-year warranty on all products

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