STMOUTUO RV Water Pressure Regulator Valve Lead-Free Brass, Pre-set 45 PSI, Adjustable with Built-In Gauge

STMOUTUO RV Water Pressure Regulator Valve is an adjustable, lead-free brass device that protects RV and trailer plumbing by reducing incoming water pressure (pre-set to 45 PSI) and includes a built-in gauge plus inlet cartridges and tape for installation.

High and fluctuating city or campground water pressure can damage hoses, fittings, and onboard plumbing. The STMOUTUO regulator is engineered to reduce and stabilize incoming pressure for RVs, campers, trailers, yards, and home irrigation setups. Built from lead-free brass and tested to low lead standards, it combines durability and safe potable-water compatibility with practical fittings and accessories to get you hooked up quickly and confidently.

How does the STMOUTUO regulator protect my RV plumbing?

The regulator lowers excessive inlet pressure that would otherwise stress pipes, seals, and appliances. With the factory preset at 45 PSI and a visible gauge, it prevents sudden spikes and maintains a consistent water flow into your system.

• Factory preset to 45 PSI for immediate protection.
• Adjustable control screw to tune pressure as needed.
• 0–160 PSI gauge shows real-time inlet pressure.
• Lead-free brass body resists corrosion for long-term reliability.

Can I adjust the pressure and how precise is the gauge?

Yes — the regulator arrives pre-set but includes an easy-turn adjusting handle so you can raise or lower output pressure. The included 0–160 PSI gauge offers clear, incremental readings so you can dial in pressure suitable for delicate fixtures or high-demand appliances.

• Turn the adjusting handle to change setpoint without extra tools.
• Wide-range gauge for accuracy across common campground pressures.
• Visual feedback lets you confirm adjustments before use.

What safety and compliance features does this valve include?

The STMOUTUO regulator meets modern low-lead requirements and has been tested to ensure lead content stays under specified limits. Its heat-cast brass construction and included inlet cartridges help keep contaminants and debris out of your RV plumbing.

• Complies with NSF/ANSI/CAN 372:2024 lead content requirements.
• Lead content tested at less than 0.13% for potable-water safety.
• Two inlet cartridges filter coarse particles during hookup.
• Heat-cast brass resists cracking and galvanic corrosion in outdoor use.

How easy is installation and what comes in the package?

Installation is straightforward: the unit uses a standard 3/4-inch hose thread that mates with typical American RV spigots and hoses. The package supplies the parts needed to reduce leaks and contamination so you can connect quickly and confidently.

• Standard 3/4-inch garden-hose-thread (GHT) fitting for plug-and-play hookup.
• Two spare inlet cartridges to trap debris and prolong regulator life.
• Roll of plumber’s tape included to ensure leak-free threads.
• Pre-calibrated unit ready to use out of the box; adjust if desired.

Who is this for? The STMOUTUO RV Water Pressure Regulator Valve is intended for RV and camper owners, trailer users, mobile-home residents, and anyone connecting to uncertain municipal or campground water sources. It also suits homeowners using yard irrigation or temporary hose connections who want a compact, durable regulator. If you need an easy-to-install, adjustable, and lead-safe solution to prevent plumbing damage and get predictable water pressure, this unit provides the core features, safety testing, and accessories to do the job reliably.