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Delta RP50587 Single Handle Valve Cartridge

TLDR Review: Delta RP50587 Valve Cartridge

Item: Delta RP50587 Valve Cartridge
Author: ShopSavvy

By ShopSavvy Team

Published: December 30th, 2025

Pros

•Genuine Delta part ensures excellent build quality, smooth operation, and durability compared to knocff alternatives.
•Works very smoothly without stiffness, squeaking, or noise, restoring faucet functionality like new.
•Effectively stops drips and resolves issues with creaky handles, hard closing, and poor hot/cold water mixing.
•Fits perfectly as a factory replacement cartridge, guaranteeing compatibility.
•Easy and straightforward installation requiring minimal tools (just a hex key, small screwdriver, and pliers).
•Installation typically takes about 5 to 6 minutes following simple steps.
•Reliable and durable performance prevents common issues that appear after months of use.
•Buying this genuine cartridge saves time and hassle over dealing with costly or ineffective imitation parts.

Cons

•Slightly more expensive upfront compared to cheaper imitation cartridges, though worth the investment for longevity.
•Replacement requires shutting off water supply and some minor disassembly, which may be inconvenient for beginners (though clear tutorials are available).
•No special advanced features beyond standard valve cartridge functionality (purely a replacement part).

Bottom Line

If you want a no-nonsense, reliable fix for a leaky or malfunctioning single-handle Delta faucet, the RP50587 cartridge is the genuine OEM part you need. It’s a smooth operator with durable performance that pays off by avoiding frequent replacements or noisy issues common with cheaper knock-offs. Installation is quick and doable with basic tools, making it a smart choice for DIY faucet repair. If you’re looking for a hassle-free, high-quality replacement cartridge, this is it.