Water Pressure Regulator

Overview

The Camco 40055 Brass Water Pressure Regulator is a simple, reliable tool designed to protect your RV’s plumbing system from potentially damaging high water pressure at campgrounds or city water hookups. Built from durable brass, it helps ensure a consistent water pressure flow of approximately 40–50 PSI, safeguarding plastic lines, faucets, and fixtures inside your RV.

This model is a favorite among RVers for its ease of use — simply attach it to the campground spigot before connecting your freshwater hose, and it automatically regulates pressure without the need for manual adjustment.

Key Features

• Maintains safe water pressure (40–50 PSI) to prevent leaks or burst lines
  
• Solid brass construction for long-lasting corrosion resistance
  
• Standard ¾” garden hose threads for universal RV compatibility
  
• Simple “inline” design — no tools or adjustments required
  
• Lead-free and compliant with low-lead laws for potable water use
  

RV Use Cases

• Prevents over-pressurization damage to RV freshwater lines during campground hookup
  
• Ensures consistent flow when using city water connections or external water sources
  
• Ideal for long-term RV stays where varying water pressures are common
  

Common User Feedback

Pros:

• Durable brass build that lasts through multiple seasons
  
• Reliable performance with steady pressure output
  
• Quick and easy to install without extra fittings
  

Cons:

• Fixed (non-adjustable) pressure setting
  
• May reduce flow slightly compared to adjustable regulators
  
• Exterior brass can tarnish over time if not stored dry
  

Best Practices

1. Install at the source: Always attach the regulator directly to the campground spigot before your freshwater hose.
   
2. Inspect regularly: Check O-rings and threads for debris or wear before each trip.
   
3. Store dry: Allow to air dry before storage to prevent corrosion or mineral buildup.
   
4. Upgrade option: For variable water pressure environments, consider an adjustable model with a gauge.
   

Inspector’s Note (RV Pro Solutions Insight)

Regulating water pressure is one of the most overlooked yet critical aspects of RV ownership. Campground water pressure can fluctuate dramatically — sometimes well above safe limits for an RV’s plumbing system. While modern RVs are built to handle slightly higher pressures than older models, that doesn’t mean you should push the limits. Excessive water pressure can cause unnecessary strain on fittings, valves, and connections, leading to premature wear or even catastrophic leaks.

As an NRVIA Certified Inspector, I always emphasize water system protection as part of every inspection and owner education session. A simple brass water pressure regulator, such as the Camco model, can make all the difference. This small, affordable device helps ensure your RV receives a steady, safe water pressure — typically around 40–50 PSI — protecting against dangerous spikes that can occur at various campgrounds.

It’s one of the first accessories I recommend to new RV owners: small, affordable, and absolutely essential for long-term RV safety and peace of mind.