Overview
The LMI Liquid Metronics 33050 anti-syphon pressure relief valve assembly is a compact, multi-function valve designed to protect metering pump systems from siphoning and excessive pressure conditions. This diaphragm-type valve is engineered for reliable operation in chemical injection, water treatment, and dosing applications where backflow prevention and pressure control are critical.
Key Features
- Diaphragm-type anti-syphon protection prevents discharge line backflow
- Integrated pressure relief function protects system from overpressure
- Priming aid and line drain features for simplified maintenance
- Ergonomic design with adjustable pressure control
- 360° swivel mounting connection for flexible installation
- Chemical-resistant hardware construction
Technical Specifications
- Part Number: 33050
- Manufacturer: LMI (Liquid Metronics, Inc.)
- Valve Type: Diaphragm-type anti-syphon/pressure relief
- Functions: Anti-syphon, pressure relief, priming, line drain
- Material: PVDF body with chemical-resistant hardware
- Mounting: 360° swivel connection for tubing systems
- Sealing Material: Polyprel® (PTFE-based elastomer)
Typical Applications
- Chemical metering and injection systems
- Water and wastewater treatment
- Chlorine and sodium hypochlorite dosing
- Industrial liquid handling with pressure control requirements
- Pool and spa chemical injection
Compatibility & Replacements
Compatible With
- LMI Series metering pumps (300, 400, 800, 900 Series)
- LMI tubing connection systems
- Standard metering pump discharge lines
- Low and no-pressure system applications
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or LMI technical support before ordering replacement units. The 33050 assembly may replace earlier-generation relief valve models on compatible pump heads—consult OEM documentation for your specific pump series.
Works With
- LMI electronic metering pump controllers
- Chemical injection system designs
- Both low and high-pressure discharge line configurations
- Standard tubing and hose connections
