Identify Camco RV Water Pressure Regulators by Model & Gauge
When an RV is connected to campground water, a pressure regulator helps keep supply pressure within the plumbing system's limits. Camco's brass regulator range includes a fixed-output model, a preset model with a gauge and an adjustable model with a gauge. The original manufacturer number determines which features are present.
Which regulator design do you have?
40055 · Basic fixed regulator
Brass construction with standard garden-hose connection ends. The manufacturer sells this as a preset pressure regulator without a gauge or adjustment control.
40064 · Fixed regulator with gauge
Includes an attached pressure gauge while retaining a preset regulating function. A gauge does not mean the pressure setpoint is adjustable.
40058 · Adjustable regulator with gauge
The adjustable brass design has a pressure gauge for monitoring while following the manufacturer’s adjustment procedure. This differs from the two preset units.
Confirm the RV plumbing limit
The correct setting is determined by the RV plumbing manufacturer, hose connections and any other components in the water line—not merely by the regulator’s highest possible setting.
Camco regulator model comparison
| Camco MPN | Configuration | Gauge | Pressure setting | Connection type |
|---|---|---|---|---|
| 40055 | Preset brass | No gauge | Fixed regulated output | Garden-hose ends |
| 40064 | Preset brass with gauge | Integrated gauge | Fixed regulated output | Garden-hose ends |
| 40058 | Adjustable brass with gauge | Integrated gauge | User-adjustable | Garden-hose ends |
Important distinction: The 40064 has a gauge but is not the adjustable model. Only the listed 40058 is the adjustable brass regulator in this comparison. A pressure gauge does not replace correct installation or safe plumbing limits.
Before reusing a regulator
- Read the Camco MPN on the regulator or its original packaging. A gauge-equipped unit may still have a fixed regulated output.
- Inspect the female hose washer, threads, regulator body and any gauge lens for damage or leaks.
- Confirm the hose and inlet thread configuration against the exact product and the RV’s freshwater inlet. Do not force mismatched fittings.
- If using the 40058 adjustable version, follow Camco’s setting and monitoring procedure and stay within the RV manufacturer’s permissible supply pressure.
- Do not assume the regulator contains a backflow check valve. Examine the individual product listing for included parts and condition. UsedRVParts viewing and pickup in Kelowna are by appointment.
Matching Camco pressure regulators
Review the individual UsedRVParts listings for the exact regulator, item condition and supplied parts.
Camco 40058
Adjustable brass with gauge · Integrated gauge
Adjust pressure following the Camco instructions
Other freshwater troubleshooting
For regulators with different fittings and preset ratings, see Valterra RV regulator identification. For poor flow after connecting a hose, review RV low-water-flow checks.
Recently viewed
New & Updated RV Parts Inventory — Check Back Often
We’re always adding new and used RV parts to our inventory, so be sure to check back regularly.
If you don’t see the part you need today, we may still have it in stock—our internal database includes thousands of new RV parts that are not yet listed online.
Text or email us with the product number or model, and we’ll check availability for you right away.
Our Products