As a plumber and being honest with you, you would be much better off having the complete 3 handle valve replaced with a single handle valve. I like the Delt monitor 13 series of valves and trims. Below is a link for information. You need to know some of the required plumbing or call a plumber for this project. Finding the proper stems and trim for the old valve is not easy, and for the money, the kits don't last. The other advantage to new single handle valves is the anti scalding protection of the pressure balance cartridges. https://www.familyhandyman.com/project/how-to-replace-a-two-handle-shower-valve-with-a-single-handle-unit/ Answer from Pipe-Gap-Pro on reddit.com
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Delta Faucet
deltafaucet.com › service-parts › find-parts-and-identify-product
Find Parts and Identify Your Product | Delta Faucet
Solves drips from the outlet when water is off or leaks behind the handle View Tub/Shower Cartridges ... Answer step-by-step questions to narrow down the results to your product model number resulting in a link to the product detail page containing a list of parts and a parts diagram.
Discussions

Can’t seem to find replacement parts for shower
As a plumber and being honest with you, you would be much better off having the complete 3 handle valve replaced with a single handle valve. I like the Delt monitor 13 series of valves and trims. Below is a link for information. You need to know some of the required plumbing or call a plumber for this project. Finding the proper stems and trim for the old valve is not easy, and for the money, the kits don't last. The other advantage to new single handle valves is the anti scalding protection of the pressure balance cartridges. https://www.familyhandyman.com/project/how-to-replace-a-two-handle-shower-valve-with-a-single-handle-unit/ More on reddit.com
🌐 r/askaplumber
10
1
October 28, 2023
How do I identify replacement parts for a shower valve?
While the wall is open is the time to replace the entire valve. More on reddit.com
🌐 r/askaplumber
59
12
October 6, 2025
Replace or fix shower handle
If you can figure out what brand the valves are you can find repair parts at the hardware store, and plenty of DIY videos. You might need to pull off handles and look on inside. For the chrome handle, there is likely a set screw on bottom. For the clear handle, pop off little circle lid with a small thin flathead screwdriver or similar, and there should be a screw. More on reddit.com
🌐 r/HomeImprovement
8
3
February 18, 2023
Is there a universal replacement for my early 90’s shower handle?
That is a mixit valve. You can get a replacement trim kit at either the orange or blue box store. More on reddit.com
🌐 r/askaplumber
11
2
April 3, 2024
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Infinity Drain
relyonpdi.com › 142893 › category › bathroom › bathroom-faucet-components › tubshower-faucet-parts-repair-kits
Tub/Shower Faucet Parts & Repair Kits | PDI Kitchen, Bath & Lighting
R10000 Universal Tub and Shower Valve (1) Suitable For Use With R10000+Universal+Tub+and+Shower+Valve+ R10000 Universal Tub and Shower Valve · R70400 Rough Wall-Mount Tub Filler (1) Suitable For Use With R70400+Rough+Wall-Mount+Tub+Filler+ R70400 Rough Wall-Mount Tub Filler · RP17154 Knob Handle, 1300 and 1400 Series Faucets (1) Suitable For Use With RP17154+Knob+Handle,+1300+and+1400+Series+Faucets+ RP17154 Knob Handle, 1300 and 1400 Series Faucets
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Ferguson
ferguson.com › shop › bathroom-plumbing › shower-faucet-valve-replacement
Shower Faucet & Valve Replacement - Parts & Tools | Ferguson
Replace a shower faucet and valve by shopping Ferguson.com for parts from the best brands, backed by support from the nation’s top plumbing supplier.
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DEA Bathroom Machineries
deabath.com › home › faucet parts
Faucet Parts – DEA Bathroom Machineries
(209) 728-2031 · My Account · Product has been added to your cart · Antique Plumbing Fixtures · Obsolete Plumbing Parts and Faucet Restoration · Faucet Parts · Showing 1–48 of 277 results · 1960’s Vintage Kohler Two Handle Tub Shower Rebuild Kit · $66.30 Add to cart · American ...
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Moen
shop.moen.com › collections › parts
Moen Replacement Parts and Accessories
Whether you need parts for a faucet, sink or shower, we offer a wide selection of Moen replacement parts and accessories to meet your needs.
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Amazon
amazon.com › universal-shower-handle-replacement › s
Amazon.com: Universal Shower Handle Replacement
Enhon Lever Handle Kit and Handle Screw Kit, Compatible with American Standard M962160-0020A/030126-0070A, for Single-Handle Pressure Balance Tub and Shower(Polished Chrome) · Universal Shower Trim Kit Replacement for Delta 13/14 Series, Matte Black Shower Handle & Cover Plate, Durable Metal ...
Find elsewhere
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Walmart
walmart.com › home improvement › bathroom renovation › bathroom cabinets & fixtures
Shower Handle Replacements
$5599current price $55.99Black Shower Handle Replacement for Delta BT14096 13/14 Series Single-Function Trim Kit, Pressure-Balancing Valve Trim Replacement for Delta R10000 Series Shower Valves(Cartridge Included)
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Jonesstephens
jonesstephens.com › plumbing
Tub & Shower Repair Parts
Two Handle Faucets · Shower Heads · Back · Volume Control · Stoppers & Strainers · Trim Kits · Tub Faucets & Spouts · Back · Accessories · Bathcocks · Diverter Spouts · Tub Spouts · Decorative Pipe Nipples & Sleeves · Back · Cover Tubes · Pipe Nipples · Pipe Sleeves · Drains & Accessories · Back · Bathroom Sink Drains · Back · Replacement Parts ·
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Waterworks
waterworks.com › home › parts & care › shower and faucet parts & care kits
Shower and Faucet Parts & Care | Shop Replacement Parts at Waterworks | Waterworks
Waterworks parts and care kits are designed to maintain what was carefully built. Every piece supports long-term function and consistency, ensuring showers and faucets continue to perform as intended. From faucet cartridge replacement kits to shower handle parts, seals, and diverters, each component is made to fit our systems with exacting compatibility.
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American Standard
americanstandard-us.com › home › shower system parts
Shower System Parts
Includes shower remodel, tub replacement and bath-to-shower conversions.
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Mintera
mintera.com › collections › bathroom-shower-faucet-parts
Bathroom & Shower Faucet Parts | Up to 60% Off! | Mintera
We have the shower parts and repair kits you need from your favorite brands like Delta at prices you’ll find irresistible.
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GROHE
grohe.us › home › shower system parts
Shower System Parts
Model: 26893 Rainshower Hand Shower Adaptor Elbow for Deck Mount Tub Filler Rainshower Hand Shower Adaptor Elbow for Deck Mount Tub Filler · $32.20 · Compare · Repair Parts · Model: 26385 RSH SmartControl packing disc RSH SmartControl packing ...
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Danco
danco.com › home › bathroom › tub & shower parts › shower handles
Shower Handles - Bathtub and Shower Parts by Danco
Explore our range of bathtub and shower repair parts and accessories available for purchase online or in-store. Upgrade your bathing experience with top-notch shower handles and replacement knobs designed for durability and functionality.
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Amazon
amazon.com › replacement-shower-handles › s
Amazon.com: Replacement Shower Handles
Shower Knobs 3 Piece Replacement Compatible with Price Pfister Windsor Tub and Shower Faucets,Shower Faucet Handle Replacement,3 Pieces Hot Cold and Diverter Shower Handles Replacement (Clear Acrylic) · Enhon 2 Piece Shower Knob Replacement, Hot and Cold Faucet Knobs Compatible with Price ...
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Reddit
reddit.com › r/askaplumber › how do i identify replacement parts for a shower valve?
r/askaplumber on Reddit: How do I identify replacement parts for a shower valve?
October 6, 2025 -

We are redoing our 40yo bathroom, and while I have got access to the valves I'd like to replace them.

Visible damage aside, the hot and cold are pretty hard to control, and I wanted to fix that anyway.

All the identifying information I can see are a "34D" and "21088" markings, and my preliminary Googling has not been conclusive.

Could you point me towards how to identify the parts I need?

Thanks in advance!