The Mueller Industries AJ17840 is a heavy-duty Pressure Regulating Valve (PRV) engineered for dependable downstream pressure control in HVAC, plumbing, and hydronic piping systems. Rated at 450 lb (450), this valve is built to handle demanding pressure conditions while maintaining consistent, stable outlet pressure to protect downstream equipment and piping.
Key Features
- 450 lb (450) pressure rating for high-demand applications
- 1″ NPTFE (external thread) inlet connection for secure, leak-resistant installation
- 1″ NPTFI (internal thread) outlet connection for flexible system integration
- Pressure regulating design maintains stable downstream pressure
- Compact, inline body style for straightforward installation in tight spaces
- Mueller Industries quality construction for long service life
Applications
- HVAC hydronic heating and cooling systems
- Commercial and residential plumbing pressure management
- Boiler feed and water distribution systems
- Industrial fluid handling where pressure reduction is required
Specifications
- SKU: AJ17840
- Brand: Mueller Industries
- Pressure Rating: 450
- Inlet Connection: 1″ NPTFE (External Thread)
- Outlet Connection: 1″ NPTFI (Internal Thread)
- Valve Type: Pressure Regulating Valve (PRV)








