Regulators
Pressure Tech Hydraulic / Water-Glycol Regulators – HYD691, LF690, LF691, LGC690, MF414
Regulators
Pressure Tech Hydraulic / Water-Glycol Regulators – HYD691, LF690, LF691, LGC690, MF414
These piston-sensed regulators are designed for liquid service, specifically hydraulic fluids and water-glycol systems. With ceramic seating and segregated captured venting, these regulators are built to withstand cavitation, erosion, and wear in demanding hydraulic applications.
Why it matters
Hydraulic and water-glycol systems operate under tough conditions that can quickly damage standard regulators. These specialised models extend service life, provide positive shut-off, and maintain stable control, reducing downtime and maintenance costs in critical operations.

Product features
- Piston-sensed designs for durability in liquid service
- Ceramic seating to resist cavitation and provide positive shut-off
- Segregated captured vent to protect the loading mechanism
- Balanced main valve options for improved control accuracy
- Designed for long service life in hydraulic and water-glycol applications
Models
- HYD691: piston-sensed regulator designed for water-glycol and other hydraulic services with ceramic seating datasheet
- LF690: piston-sensed low-flow regulator with ceramic seating, engineered for hydraulic service datasheet
- LF691: piston-sensed low-flow regulator with ceramic seating and plug design for pressures above 690 bar (10,000 psi) datasheet
- LGC690: piston-sensed regulator for hydraulic control systems, designed with ceramic seating for cavitation resistance datasheet
- MF414: piston-sensed medium-flow regulator with ceramic seating, designed for water-based hydraulic applications datasheet
Need help specifying the right regulators?
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