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"markdown": "[← Shower & tub plumbing hub](<https://mtnmanplumbing.com/services/shower-tub/?agentnet=md>) Sandy, Utah · Salt Lake Valley\n\nWall access · New fixtures · Rough-in to finish\n\n# Shower & tub replacement plumbing.\n\nNew handles, a worn valve, a new tub or a complete walk-in shower each call for different plumbing work. Here is how we plan the connections, open the right area and finish a bathroom that works as well as it looks.\n\n- [Book shower & tub service ↗](<https://mtnmanplumbing.com/book-online/?agentnet=md>)\n\n- [(385) 766-8935](<tel:+13857668935>)\n\n- [All shower & tub services](<https://mtnmanplumbing.com/services/shower-tub/?agentnet=md>)\n\n- [Valves & cartridges](<https://mtnmanplumbing.com/services/shower-tub/shower-valve-repair/?agentnet=md>)\n\n- [Spouts & diverters](<https://mtnmanplumbing.com/services/shower-tub/tub-spouts-and-diverters/?agentnet=md>)\n\n- [Drains & hidden leaks](<https://mtnmanplumbing.com/services/shower-tub/tub-shower-drains-and-leaks/?agentnet=md>)\n\n- [Replacement & remodels](<https://mtnmanplumbing.com/services/shower-tub/shower-tub-replacement/?agentnet=md>)\n\nIn this guide\n\n- [3D handle comparison ↓](<https://mtnmanplumbing.com/services/shower-tub/shower-tub-replacement/#st-valve-lab>)\n\n- [Choose the job ↓](<https://mtnmanplumbing.com/services/shower-tub/shower-tub-replacement/#st-access>)\n\n- [From two handles to one ↓](<https://mtnmanplumbing.com/services/shower-tub/shower-tub-replacement/#st-convert>)\n\n- [Changing the tub or shower base ↓](<https://mtnmanplumbing.com/services/shower-tub/shower-tub-replacement/#st-drain-plan>)\n\n- [Choose fixtures before rough-in ↓](<https://mtnmanplumbing.com/services/shower-tub/shower-tub-replacement/#st-layout>)\n\n- [From open wall to first shower ↓](<https://mtnmanplumbing.com/services/shower-tub/shower-tub-replacement/#st-stages>)\n\n- [What belongs in the quote ↓](<https://mtnmanplumbing.com/services/shower-tub/shower-tub-replacement/#st-price>)\n\nChoose the job\n\n## What are you changing?\n\nStart with the part of the bathroom you want to change. Each option shows what happens behind the finish.\n\n### New handles & finish\n\n\n\nOur work / Finished shower trim [See this job ↗](<https://mtnmanplumbing.com/sandy-shower-repair/?agentnet=md>)\n\n### Keep a sound valve. Fit compatible trim.\n\nThe handle and cover plate are the trim. Matching new trim can refresh a shower without disconnecting its pipes. We identify the valve family first because trim fits specific bodies and cartridges.\n\nIf it also drips or turns poorly, service the working parts while the trim is off.\n\n### New valve in the wall\n\n\n\nOur work / New valve and copper connections [See this job ↗](<https://mtnmanplumbing.com/sandy-shower-repair/?agentnet=md>)\n\n### Replace the body. Reconnect the pipes.\n\nA damaged body, unavailable repair parts or a control upgrade can call for a new valve. We open access, isolate the supplies and disconnect the old body. The new valve is supported at the right depth for the finished wall.\n\nThe hot and cold inlets, shower riser and tub-drop connection are checked while exposed. We plan the access patch with the valve work.\n\n### New tub or shower\n\n\n\nOur work / Connections planned before finishing [See this job ↗](<https://mtnmanplumbing.com/sandy-shower-repair/?agentnet=md>)\n\n### Plan the water and drain as one job.\n\nA new fixture can change the drain location, valve position and wall layout. Select the tub or shower base, matching drain, valve and trim before rough-in. Those choices establish where the concealed connections belong.\n\nWe inspect the existing trap and drain, plan access and coordinate setting, waterproofing and finish work with the remodel team.\n\nFrom two handles to one\n\n## A new valve. A plan for the old holes.\n\n\n\nOur work / Two-handle shower in Midvale [See this job ↗](<https://mtnmanplumbing.com/midvale-shower-repair/?agentnet=md>)\n\nThe old hot and cold bodies come out, and both supplies connect to the new mixing valve. We position the control, secure its body and reconnect the shower riser and tub drop. The finished wall sets the installation depth so the trim and handle fit correctly.\n\nA remodel plate can cover the old handle openings and access cut when its size and shape suit the wall. Retiling gives more freedom to move the control and restore the surface. Access from the room behind the shower can reduce the tile work.\n\n### Choosing the new controls\n\nA pressure-balanced valve helps steady the mix when supply pressure changes. A thermostatic valve responds to mixed-water temperature; some systems add a separate volume control. We select the valve and matching trim together, then set and measure the outlet temperature at completion.\n\nRead more: [Delta: MultiChoice controls and compatibility ↗](<https://www.deltafaucet.com/design-innovation/innovations/shower/multichoice-universal-valve>) · [Moen: PosiTemp temperature limit stop ↗](<https://solutions.moen.com/Article_Library/How_to_Adjust_the_PosiTemp_Temperature_Limit_Stop>)\n\nInside the shower valve / Explore in 3D\n\n## Same shower. Different controls.\n\nChoose the handles that look familiar. Open the cutaway, turn the hardware and select a part to learn its job.\n\nMoen 2520 / PosiTemp\n\nLoading the valve assembly…\n\nDrag to turn · Select a named part below [Moen 2520 manufacturer CAD](<https://shop.moen.com/products/2520>) · Multi-handle teaching models\n\n### Single handleOne mixing cartridge\n\nSingle handle\n\n### One handle brings the supplies together.\n\nMatch the new trim to the valve behind the wall. The model shows the cartridge, retaining parts and body that determine compatibility.\n\n#### Planning the change\n\nChanging to another valve system involves the body and pipe connections behind the finish.\n\n[See the parts from our repairs →](<https://mtnmanplumbing.com/services/shower-tub/shower-valve-repair/#st-parts>)\n\n### Cartridge & seals\n\n**Cartridge & seals**\n\nThe 1222 cartridge contains the shutoff, mixing and pressure-balancing components. Its oval side seals separate the supply passages.\n\n### Brass valve body\n\n**Brass valve body**\n\nThe body connects to the four pipes and holds the cartridge. This model uses the geometry published by Moen for its 2520 valve.\n\n### Retaining clip\n\n**Retaining clip**\n\nThe U-shaped clip locks the cartridge into the valve body against water pressure. It lifts out for cartridge service.\n\n### Handle stem\n\n**Handle stem**\n\nThe handle attaches to this brass shaft. Turning it operates the cartridge.\n\n### Water connections\n\n**Water connections**\n\nHot and cold enter opposite sides. The upper outlet serves the shower; the lower outlet serves the tub spout.\n\n### Two handlesSeparate hot and cold\n\nTwo handles\n\n### Each handle controls its own supply.\n\nA two-handle valve leaves two openings in the wall. Plan how the new control and wall finish will fit those openings.\n\n#### Planning the change\n\nInclude access to both supply connections and the outlet when pricing a conversion.\n\n[See the parts from our repairs →](<https://mtnmanplumbing.com/services/shower-tub/shower-valve-repair/#st-parts>)\n\n### Hot stem & valve\n\n**Hot stem & valve**\n\nTurning the handle moves a rubber washer toward or away from the seat inside the body. A flattened washer or a pitted seat can let the spout keep dripping after the handle is closed.\n\n### Cold stem & valve\n\n**Cold stem & valve**\n\nThe cold side has a second stem and washer. Water leaking around a handle comes from the stem seal or packing; a worn shutoff washer lets water through to the outlet.\n\n### Connected valve body\n\n**Connected valve body**\n\nThe hot and cold valves feed a shared passage in this brass body. The body stays connected to the pipes when the removable stems and seats are serviced from the front.\n\n### Handles & flanges\n\n**Handles & flanges**\n\nThe cross handles turn the stems, and the chrome flanges cover the wall openings. Handle splines, stem length and flange threads determine which replacement trim fits.\n\n### Mixed-water outlets\n\n**Mixed-water outlets**\n\nMixed water leaves the center of the body. Pulling up the tub-spout diverter blocks the spout opening so water travels up the shower pipe. Wear at that diverter can leave the spout running during a shower.\n\n### Three handlesHot / diverter / cold\n\nThree handles\n\n### The middle handle chooses the outlet.\n\nThree handles mean three existing wall openings. A conversion needs a plan for the new valve, outlets and finish repair.\n\n#### Planning the change\n\nChoose the finished layout before the wall is opened so the plumbing and surface work agree.\n\n[See the parts from our repairs →](<https://mtnmanplumbing.com/services/shower-tub/shower-valve-repair/#st-parts>)\n\n### Hot stem & valve\n\n**Hot stem & valve**\n\nThe hot stem carries a rubber washer that closes against a seat in the body. A damaged seat can quickly chew up a new washer, so both surfaces matter in a drip repair.\n\n### Cold stem & valve\n\n**Cold stem & valve**\n\nThe cold stem controls the second supply. Its washer stops flow to the outlets; its stem seal keeps water from escaping around the handle. The leak location helps identify which part needs attention.\n\n### Center diverter\n\n**Center diverter**\n\nThe center stem switches the mixed water between the tub and shower passages. Worn diverter seals can let both outlets run together even when the hot and cold valves are working properly.\n\n### Three handles & flanges\n\n**Three handles & flanges**\n\nThe center handle operates the diverter; the outer handles control the supplies. Matching trim depends on the stem and flange connections behind these handles.\n\n### Tub & shower branches\n\n**Tub & shower branches**\n\nThe upper connection feeds the showerhead and the lower connection feeds the tub spout. The center diverter chooses the path; the two outer handles shut the water off.\n\n### Two modern controls can work differently.\n\nModern showers can have separate temperature and volume controls, or a second handle for a handshower. Those belong to a mixing/transfer system. The older two-handle example here has one hot valve and one cold valve.\n\nRead more: [Moen: shower valve controls and handle motion ↗](<https://solutions.moen.com/Article_Library/A_Comparison_of_M-Core%2C_PosiTemp_and_Moentrol_Valves%3F>) · [Pfister: multi-handle valves, stems and diverters ↗](<https://www.pfisterfaucets.com/parts-support/troubleshooting/product/pfister-g01-3190-3-handle-tub-shower-trim-with-valve>) · [Delta: MultiChoice controls and compatibility ↗](<https://www.deltafaucet.com/design-innovation/innovations/shower/multichoice-universal-valve>)\n\nChanging the tub or shower base\n\n## The drain decides a lot of the work.\n\n**Replacing a bathtub**\n\nThe drain position, overflow height and tub shape determine the waste-and-overflow assembly. We connect it to the trap, support the tub and test the drain and overflow while the joints remain accessible.\n\n**Tub to walk-in shower**\n\nThe tub waste assembly gives way to a shower drain and trap connection. We check the existing drain size, trap, vent and proposed flow, then choose the connection for the selected base or waterproofing system.\n\n**Basement bathroom**\n\nMoving a trap or buried drain can mean opening concrete. We establish the pipe route and elevation before choosing a drain location. Underground connections are tested and inspected before the slab is restored.\n\n**Upstairs bathroom**\n\nThe drain has to fit between the floor framing. We plan its route with the fixture footprint and use access from below when needed. Structural changes are coordinated before cutting joists.\n\n### Match the drain to the waterproofing\n\nA tiled shower needs a compatible drain connection to its waterproofing. A clamping drain works with a liner; a bonding-flange drain joins a surface membrane. Curbless showers also need floor height and drainage slope worked out before the base is built.\n\nRead more: [Oatey: bathtub waste and overflow connections ↗](<https://www.oatey.com/resources/project-guides/how-install-bathtub-drain>) · [Schluter: shower waterproofing and drain assemblies ↗](<https://www.schluter.com/schluter-us/en_US/article-tiled-shower-waterproofing>)\n\n[Explore tub drains, overflows & hidden leaks →](<https://mtnmanplumbing.com/services/shower-tub/tub-shower-drains-and-leaks/?agentnet=md>)\n\nChoose fixtures before rough-in\n\n## Build around how you use it.\n\n### Head + handshower\n\nChoose whether they run separately or together. That sets the transfer-valve configuration and water demand. Put the controls where you can reach them before stepping into the spray.\n\n### A deeper soaking tub\n\nUsable fill volume and filler flow affect fill time and hot-water demand. Confirm the drain position and the filler reach before the pipes go in.\n\n### Deck or floor-mounted filler\n\nA Roman-tub faucet mounts on a deck; a freestanding filler anchors to a floor rough-in. Connection, support and access for future service are part of the installation.\n\n[Check the hot-water side of the plan →](<https://mtnmanplumbing.com/water-heater-repair/?agentnet=md>)\n\nFrom open wall to first shower\n\n## How the work comes together.\n\n1. ### Choose & expose\n\n Confirm fixture models, control locations, drain position and finished wall thickness. Isolate the water, remove the old plumbing and inspect the exposed pipes.\n2. ### Rough in & test\n\n Install and secure the concealed valve, supplies and waste connections. Coordinate tub/base setting with the drain hookup. Test the pipes and complete required inspections before closing the wall or slab.\n3. ### Finish & run\n\n After waterproofing and finishes are ready, install the handles, plates, spout and head. Set the temperature limit, check each outlet and run the drain. For tubs, test the overflow and watch the waste connections while a full tub empties.\n\n[See the full plumbing remodel guide →](<https://mtnmanplumbing.com/services/plumbing-remodel/?agentnet=md>)\n\nWhat belongs in the quote\n\n## Plumbing, access and putting it back.\n\nThe price follows the work: replacing a valve in its current location, relocating pipes, opening concrete or fitting a new drain take different amounts of labor. Worn piping uncovered during access can add another repair.\n\nWe spell out the plumbing work, fixture supply and access openings, then agree on who handles demolition, waterproofing, tile and wall repair. Share fixture model numbers before ordering so we can check the connections and explain the complete job.\n\nUseful answers\n\n## Common questions.\n\n### Can an old two-handle shower become a single-handle shower?\n\nYes, with a suitable new valve and a plan for connecting the supplies and covering or repairing the old openings. A remodel plate can sometimes cover the work; a full bathroom remodel may incorporate it into new wall finishes.\n\n[Link to this answer](<https://mtnmanplumbing.com/services/shower-tub/shower-tub-replacement/#answer-can-an-old-two-handle-shower-become-a-single-handle-shower>)\n\n### Should the valve be replaced while the wall is already open?\n\nThat is a useful time to evaluate its condition, parts availability and whether it provides the controls you want. Open access also lets us check the surrounding pipe connections and supports.\n\n[Link to this answer](<https://mtnmanplumbing.com/services/shower-tub/shower-tub-replacement/#answer-should-the-valve-be-replaced-while-the-wall-is-already-open>)\n\n### Can I buy the tub and trim before the plumber visits?\n\nShare the model numbers first. Drain location, tub support, filler connections and valve compatibility can affect the installation. Reviewing them early helps avoid a fixture that needs unexpected piping or finish changes.\n\n[Link to this answer](<https://mtnmanplumbing.com/services/shower-tub/shower-tub-replacement/#answer-can-i-buy-the-tub-and-trim-before-the-plumber-visits>)\n\n- [Valves & cartridges →](<https://mtnmanplumbing.com/services/shower-tub/shower-valve-repair/?agentnet=md>)\n\n- [Spouts & diverters →](<https://mtnmanplumbing.com/services/shower-tub/tub-spouts-and-diverters/?agentnet=md>)\n\n- [Drains & hidden leaks →](<https://mtnmanplumbing.com/services/shower-tub/tub-shower-drains-and-leaks/?agentnet=md>)\n\n### Sources & public guide record\n\nMaintained by Mountain Man Plumbing · Utah Master Plumber, Lic. \\#12992295-5501.\n\n- [Moen: PosiTemp temperature limit stop ↗](<https://solutions.moen.com/Article_Library/How_to_Adjust_the_PosiTemp_Temperature_Limit_Stop>)\n- [Delta: MultiChoice controls and compatibility ↗](<https://www.deltafaucet.com/design-innovation/innovations/shower/multichoice-universal-valve>)\n- [Oatey: bathtub waste and overflow connections ↗](<https://www.oatey.com/resources/project-guides/how-install-bathtub-drain>)\n- [Schluter: shower waterproofing and drain assemblies ↗](<https://www.schluter.com/schluter-us/en_US/article-tiled-shower-waterproofing>)\n- [Moen: shower valve controls and handle motion ↗](<https://solutions.moen.com/Article_Library/A_Comparison_of_M-Core%2C_PosiTemp_and_Moentrol_Valves%3F>)\n- [Pfister: multi-handle valves, stems and diverters ↗](<https://www.pfisterfaucets.com/parts-support/troubleshooting/product/pfister-g01-3190-3-handle-tub-shower-trim-with-valve>)\n- [Moen 2520: original CAD and valve specifications ↗](<https://shop.moen.com/products/2520>)\n\nVersion 2026.09.10.1 · References checked 2026-09-10.\n\n- [Public record · JSON](<https://mtnmanplumbing.com/pb/facts/shower-tub/guide.json>)\n\n- [Read as Markdown](<https://mtnmanplumbing.com/services/shower-tub/shower-tub-replacement/?agentnet=md>)\n\n## Let’s get it working.\n\nTell us what the shower or tub is doing. We’ll help you work through the next step.\n\n[Book shower & tub service ↗](<https://mtnmanplumbing.com/book-online/?agentnet=md>)\n\nFrom our local guides\n\n## Older homes. New plumbing projects.\n\nOur county-record analysis shows when the neighborhoods were built. The repair guides explain the fixtures, pipes and remodel work.\n\n- [**Salt Lake City: older homes, condos and remodels ↗**](<https://mtnmanplumbing.com/salt-lake-city-plumber/#slc-home>)\n- [**Holladay: the 1950s and ’60s building years ↗**](<https://mtnmanplumbing.com/holladay-plumber/#hd-homes>)\n- [**Kearns: the city’s big building waves ↗**](<https://mtnmanplumbing.com/kearns/#kn-homes>)\n\n- [Find plumbing help in your city ↗](<https://mtnmanplumbing.com/locations-we-serve/?agentnet=md>)\n\n- [Explore this topic across our service area ↗](<https://mtnmanplumbing.com/locations-we-serve/#man-topic-homes>)\n\nConnected in your home\n\n## Keep following the plumbing.\n\n- [01 **Shower & tub plumbing →** Compare repair, replacement and the parts already in the wall.](<https://mtnmanplumbing.com/services/shower-tub/?agentnet=md>)\n- [02 **Plumbing remodels & rough-in →** Coordinate the underground, rough-in and finish stages.](<https://mtnmanplumbing.com/services/plumbing-remodel/?agentnet=md>)\n- [03 **Water heater repair & learning hub →** Consider hot-water demand when adding shower outlets or a larger tub.](<https://mtnmanplumbing.com/water-heater-repair/?agentnet=md>)",
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