Description
The Mueller Industries AP18422 is a heavy-duty Pressure Regulating Valve (PRV) engineered for demanding HVAC and plumbing system applications. With a robust 700# pressure rating and 3/4″ NPTFE (male external thread) x 3/4″ NPTFI (female internal thread) connections, this valve delivers precise, dependable downstream pressure control across a wide range of commercial and industrial installations.
Mueller Industries is a globally recognized manufacturer of copper, brass, and plastic products, trusted by HVAC professionals and plumbing contractors for consistent quality and long service life. The AP18422 is built to that same standard, offering a reliable solution wherever pressure regulation is required.
Key Features
- 700# pressure rating for high-demand applications
- 3/4″ x 3/4″ connection size for straightforward installation
- NPTFE (male) x NPTFI (female) NPT threaded ends for secure, leak-resistant connections
- Pressure regulating valve (PRV) design maintains consistent downstream pressure
- Mueller Industries quality construction for long-lasting, reliable performance
Specifications
- SKU: AP18422
- Brand: Mueller Industries
- Pressure Rating: 700#
- Inlet Connection: 3/4″ NPTFE (Male External Thread)
- Outlet Connection: 3/4″ NPTFI (Female Internal Thread)
- Valve Type: Pressure Regulating Valve (PRV)
Applications
- Commercial and industrial HVAC systems
- Plumbing pressure regulation
- Hydronic heating and cooling systems
- High-pressure fluid distribution lines







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