Overview
The Consolidated 1990-C-1-LS relief valve is an industrial-grade safety relief valve designed for direct pressure control in hydraulic, pneumatic, and fluid power systems. With a 3/4″ NPT threaded connection and steel body construction, this valve provides consistent, dependable performance in applications ranging from pump protection to system pressure regulation. Available new without factory packaging for immediate deployment.
Key Features
- 3/4″ NPT threaded ports for standard industrial piping connections
- Steel construction for corrosion resistance and durability
- Compact, proven design with field-proven reliability
- Direct-acting relief mechanism for rapid pressure response
- Low maintenance and straightforward setup
Technical Specifications
- Port Size: 3/4″ NPT (National Pipe Thread)
- Body Material: Steel
- Connection Type: Threaded
- Set Pressure: 75 PSI (configurable models available up to 300 PSI)
- Dimensions: Approximately 10.75″ L × 3″ W × 2.5″ H
- Weight: 4.9 lbs
Typical Applications
- Hydraulic system overpressure protection
- Pneumatic circuit pressure regulation
- Pump discharge protection
- Industrial machinery fluid power control
- Plant utilities and support systems
Compatibility & Replacements
Compatible With
- Standard 3/4″ NPT piping systems
- Hydraulic fluid circuits (mineral oil-based)
- Pneumatic air systems
- Industrial manifold blocks with 3/4″ ports
- Pump-motor combinations requiring overpressure protection
Replaces / Drop-In Replacement For
- Consolidated 1990C-1 series relief valves (select configurations)
- Dresser Consolidated legacy 1990-C-1 valves
- Verify exact pressure rating and port configuration with your system integrator or technical support before ordering
Works With
- Hydraulic pumps (gear, vane, piston)
- Pneumatic compressors
- Industrial control systems
- Manifold subplates with cavity provisions for 3/4″ cartridge or threaded inserts
























