---
product_id: 383296925
title: "4 inch Thermostatic RV Shower Faucet Valve"
brand: "missmin"
price: "550.80 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Missmin"
url: https://www.desertcart.tn/products/383296925-4-inch-thermostatic-rv-shower-faucet-valve
store_origin: TN
region: Tunisia
---

# 4-inch centers for RV compatibility Precise thermostatic control Durable solid brass build 4 inch Thermostatic RV Shower Faucet Valve

**Brand:** missmin
**Price:** 550.80 DT
**Availability:** ✅ In Stock

## Summary

> 🌟 Upgrade your shower game with precision and style—because comfort is non-negotiable!

## Quick Answers

- **What is this?** 4 inch Thermostatic RV Shower Faucet Valve by missmin
- **How much does it cost?** 550.80 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/383296925-4-inch-thermostatic-rv-shower-faucet-valve)

## Best For

- missmin enthusiasts

## Why This Product

- Trusted missmin brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Heavy-duty solid brass construction guarantees long-lasting performance and reliability on the road or at home.
- • **RV-Ready Design:** Specifically engineered 4-inch centers fit most RV and motorhome shower setups seamlessly.
- • **Scald-Free Comfort:** Enjoy perfectly balanced water temperature every time—no sudden heat spikes.
- • **Sleek Chrome Finish:** Modern polished chrome elevates your bathroom or RV interior with a stylish, contemporary look.
- • **Effortless Operation:** Smooth ceramic disc cartridge ensures lifetime durability and easy water flow control without fiddling.

## Overview

This 4-inch thermostatic RV shower faucet valve delivers consistent water temperature by automatically balancing hot and cold water pressures, preventing scalding. Crafted from solid brass with a polished chrome finish, it fits most RV and motorhome shower setups, featuring a durable ceramic disc cartridge for smooth, maintenance-free operation.

## Description

thermostatic bathtub faucet provides a constant water temp out on its output to prevent accidental scalding. It automatically balance the cold and hot water pressure to maintain water temperature stable in a quick time, eliminating the need for manual adjustment Specifications: Main Material: Copper Finish: Chrome Feature: Intelligent Thermostat Package Included: 1 x Thermostatic tur faucet 2 x rubber washers 2 x brass adapters 2 x chromed escutcheons

Review: Regulates water temperature very well, at first.... - (Read to the bottom, as I've revised the review with instructions on how to clean the valve) I just installed this valve in my Winnebago Fuse motor home. The installation was fairly easy, but keeping everything lined up with the offset nipples, as the connections are tightened took a couple tries. Otherwise, no issues. Once the temperature is set (I just used the default 100 deg F setting) it regulates well. Shutting off the shower head and then turning it back on, only the water in the hose cooled down, then it comes out at the setpoint temperature. It's so much easier and more conservative on water use than trying to re-adjust the two knobs on the previous valve set. However.... So after using it on a short trip, the RV sat for two weeks. When we tried using it, very hot water came out, and the valve had to be set to full cold to get a reasonable, but still very hot, temperature. I noticed that the temperature knob felt far stiffer than previously, so maybe the hard water had reacted with the grease in the valve. I've never seen that happen with silicone grease when used on my own plumbing work. Anyhow, the instructions said something about cleaning the internal parts, so I proceeded to remove the handle and the cartridge. It is held in with a set screw on the bottom of the valve. Once out, there is no way to further disassemble the valve and clean or re-lube it.There was no trace of debris on the screens or in the valve housing. I ran water backwards through the cartridge, and rotated the temperature knob back and forth while flushing. Reassembling it into the housing with silicone grease on the o-rings went fairly well. There are a number of small spacer washers and the temp knob stop piece to get back into the correct spots and properly aligned. I tested it and it still runs extremely hot in the 100 deg F position and only at full cold does the temperature get to a reasonable temperature. I'm going to try to contact the vendor about this, and in the meantime, order another valve. I would REALLY like to get it working again, and hopefully it will stay working. Update, I looked online for posts and videos about thermostatic valves. It turns out that the parts are closely fitted, and scale can prevent the proper regulation of temperature. Ignore the instructions that come with the valve as far as removal of the cartridge, as you'll end up dissembling things you don't need to. Here's how to fix the problem I had: Make sure the water is OFF, open the left handle and any shutoffs on the showerhead to relieve the pressure. Use a 3mm hex key wrench (allen wrench) and find the small opening on the bottom of the right end of the valve. Insert the wrench and carefully remove the setscrew. Wiggle and pull gently, and the cartridge will come out along with the handle. Rinse the cartridge and then place it, handle end up into a descaler solution. I used "Eliminate" as it is non-acidic and won't damage the metal parts. Hold the body and turn the knob back and forth several times while it soaks. I let it soak overnight, then rinsed the valve. Next soak in distilled water for a few minutes to remove any mineral traces from the previous rinse. Hold the valve at both ends and shake it end to end. If you can hear a light clicking sound, then you have freed up the internals. Once it is dry, it should still click when shaken end to end. Now lightly coat the o-rings with some silicone grease, push it back into the valve body, being careful to line up the setscrew with the hole. Push a bit and it should pop back in. Re-install the setscrew,but just snug it. The valve should work again. I keep the cartridge from the second valve in my RV as a backup. When the valve works properly it is GREAT! I wish the vendor had accurate instructions on how to disassemble and properly clean the valve. I did put it back to five stars.
Review: Love this faucet - This faucet eliminates the challenges of adjusting water temp when taking a "navy shower" to conserve water. It keeps water temp consistent (once hot water has reached the faucet of course) and comfortable. Have had one of these in service for a couple years trouble free. Product is well made, all metal, with a decent quality stainless exterior. It water spots but wipes up to shiny easily. Installation was as expected of any faucet, but note you must be able to access supply lines behind the shower stall. This faucet reduced water use per shower because we no longer need to adjust temp each time water is turned off. Highly recommended for RV or boat.

## Features

- 【CONSTANT WATER TEMPERATURE】the most amazing shower upgrade. With this thermostatic bathtub faucet, no scald, no hard-to-adjust water temperature, enjoy taking a comfortable shower more than ever before. it's the ideal thermostat for every kind of user, from children to seniors
- 【4 INCH CENTERS TUB MOUNT】Can be used on most RV, motorhome. An easy replacement for a standard 2-handle RV shower faucet
- 【EASY OPERATION】simply rotate the water flow control without manual adjustment on temperature, and the Flow Control Cartridge uses ceramic discs which normally last indefinitely unless
- 【POLISHED CHROME】 It's sleek, modern and contemporary, It is a perfect choice for every bathroom and every situation, whether a renovation or new build, behind or in front of the wall, a single private residence or extensive commercial project
- 【HEAVY DUTY & SOLID BRASS】Mainly made of quality brass material, sturdy and longevity

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B098NGP43C |
| Best Sellers Rank | #174,696 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #676 in Bathtub & Shower Trim Systems |
| Brand | MISSMIN |
| Brand Name | MISSMIN |
| Customer Reviews | 4.2 out of 5 stars 389 Reviews |
| Exterior Finish | Brass , Chrome |
| Included Components | Handle |
| Inlet Connection Size | 0.38 inches |
| Inlet Connection Type | National Pipe Tapered |
| Item Weight | 1.24 kg |
| Manufacturer | The Chi's |
| Manufacturer Part Number | a4fe4c4b-1948-47e8-84a1-e74665e8dc2d |
| Material | Brass , Copper |
| Material Type | Brass, Copper |
| Model Number | a4fe4c4b-1948-47e8-84a1-e74665e8dc2d |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 6 |
| Number of Ports | 2 |
| Outlet Connection Size | 0.38 inches |
| Outlet Connection Type | NPT |
| Size | 4 inches |
| Thread Size | 0.375 inches |
| Thread Type | NPT |
| Unit Count | 1 Count |
| Valve Type | Thermostatic Valve |

## Product Details

- **Brand:** MISSMIN
- **Exterior Finish:** Brass, Chrome
- **Inlet Connection Size:** 0.38 inches
- **Inlet Connection Type:** National Pipe Tapered
- **Material:** Brass, Copper
- **Number of Packs:** 1
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.38 inches
- **Outlet Connection Type:** NPT
- **Unit Count:** 1 Count

## Images

![4 inch Thermostatic RV Shower Faucet Valve - Image 1](https://m.media-amazon.com/images/I/51a0iAY2lmL.jpg)

## Questions & Answers

**Q: Does this have an increased water flow compared to the RV faucet?**
A: I would say it's about the same, or would have been, but I removed the throttling valve that was installed right at the shower head.  You don't need it since you can throttle the flow down or turn it off completely with this faucet valve.  And it holds the temperature nearly constant when you do. That removed some pressure drop and seems to have increased the pressure at the shower head slightly.  This is a great valve -- we really like it.

**Q: What are the dimensions of the valve?**
A: overall lenght :  8-1/4 inch (from left to right) , 

hole distance(with a pair of Adjustable Swing Arms):  3-3/8 inch ~ 4-1/2 inch

**Q: @seller - what is the lead content?**
A: I don't know what the lead content is, With the faucet being European and the low price I would expect it to be yellow brass, high lead content.

**Q: Why does it cycle my on demand hot water heater in and off resulting in a cold blast about once per minute?**
A: My guess would be flow rate. I read this on another forum regarding tankless water heaters and common issues causing intermittent cold, "Low water pressure is one of the most significant reasons why the tankless water heater suddenly cold during the shower. The flow within your device is lower than the activation flow rate required, resulting in the closing down of the gas burner or it may not ignite the burner at all." 
Does it work if you turn the temp knob full hot? Or take the shower head off and run it into a bucket.  If that works, it would seem to definitely be flow rate. Most RV heads are 2gpm or less.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Regulates water temperature very well, at first....
*by G***Y on February 24, 2023*

(Read to the bottom, as I've revised the review with instructions on how to clean the valve) I just installed this valve in my Winnebago Fuse motor home. The installation was fairly easy, but keeping everything lined up with the offset nipples, as the connections are tightened took a couple tries. Otherwise, no issues. Once the temperature is set (I just used the default 100 deg F setting) it regulates well. Shutting off the shower head and then turning it back on, only the water in the hose cooled down, then it comes out at the setpoint temperature. It's so much easier and more conservative on water use than trying to re-adjust the two knobs on the previous valve set. However.... So after using it on a short trip, the RV sat for two weeks. When we tried using it, very hot water came out, and the valve had to be set to full cold to get a reasonable, but still very hot, temperature. I noticed that the temperature knob felt far stiffer than previously, so maybe the hard water had reacted with the grease in the valve. I've never seen that happen with silicone grease when used on my own plumbing work. Anyhow, the instructions said something about cleaning the internal parts, so I proceeded to remove the handle and the cartridge. It is held in with a set screw on the bottom of the valve. Once out, there is no way to further disassemble the valve and clean or re-lube it.There was no trace of debris on the screens or in the valve housing. I ran water backwards through the cartridge, and rotated the temperature knob back and forth while flushing. Reassembling it into the housing with silicone grease on the o-rings went fairly well. There are a number of small spacer washers and the temp knob stop piece to get back into the correct spots and properly aligned. I tested it and it still runs extremely hot in the 100 deg F position and only at full cold does the temperature get to a reasonable temperature. I'm going to try to contact the vendor about this, and in the meantime, order another valve. I would REALLY like to get it working again, and hopefully it will stay working. Update, I looked online for posts and videos about thermostatic valves. It turns out that the parts are closely fitted, and scale can prevent the proper regulation of temperature. Ignore the instructions that come with the valve as far as removal of the cartridge, as you'll end up dissembling things you don't need to. Here's how to fix the problem I had: Make sure the water is OFF, open the left handle and any shutoffs on the showerhead to relieve the pressure. Use a 3mm hex key wrench (allen wrench) and find the small opening on the bottom of the right end of the valve. Insert the wrench and carefully remove the setscrew. Wiggle and pull gently, and the cartridge will come out along with the handle. Rinse the cartridge and then place it, handle end up into a descaler solution. I used "Eliminate" as it is non-acidic and won't damage the metal parts. Hold the body and turn the knob back and forth several times while it soaks. I let it soak overnight, then rinsed the valve. Next soak in distilled water for a few minutes to remove any mineral traces from the previous rinse. Hold the valve at both ends and shake it end to end. If you can hear a light clicking sound, then you have freed up the internals. Once it is dry, it should still click when shaken end to end. Now lightly coat the o-rings with some silicone grease, push it back into the valve body, being careful to line up the setscrew with the hole. Push a bit and it should pop back in. Re-install the setscrew,but just snug it. The valve should work again. I keep the cartridge from the second valve in my RV as a backup. When the valve works properly it is GREAT! I wish the vendor had accurate instructions on how to disassemble and properly clean the valve. I did put it back to five stars.

### ⭐⭐⭐⭐⭐ Love this faucet
*by T***G on June 22, 2026*

This faucet eliminates the challenges of adjusting water temp when taking a "navy shower" to conserve water. It keeps water temp consistent (once hot water has reached the faucet of course) and comfortable. Have had one of these in service for a couple years trouble free. Product is well made, all metal, with a decent quality stainless exterior. It water spots but wipes up to shiny easily. Installation was as expected of any faucet, but note you must be able to access supply lines behind the shower stall. This faucet reduced water use per shower because we no longer need to adjust temp each time water is turned off. Highly recommended for RV or boat.

### ⭐⭐⭐⭐⭐ Best RV upgrade?
*by C***T on September 14, 2026*

I love this shower faucet. Of all the upgrades to my RV this one may be the best. The auto temperature is a huge feature and a game changer in the shower. Now I can turn the water off to conserve during a shower and when I turn it back on there is no temperature change. With the shower head water valves I would always get a blast of hot or cold water when turning them off and on. In addition, now if someone uses the kitchen sink while I'm in the shower, the auto temperature adjust totally saves the day. Even with the water pressure dropping it still maintains the same temperature. This would be one of the first upgrades if we ever got a different RV.

## Frequently Bought Together

- MISSMIN 4 inch Thermostatic RV Shower Faucet Valve
- MISSMIN Themostatic valve cartridge replacement,Brass construction
- KAIYING Drill-Free High Pressure Handheld Shower Head with ON/OFF Pause Switch 3 Spray Modes Water Saving Showerhead, Detachable Puppy Shower Accessories (M:Shower Head (Chrome)+Bracket+Hose)

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---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-11-10*