B & K Products 888-221RP Replacement Drain Caps

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Bright brass sthreaded caps with black rubber seals.

WHAT OUR CUSTOMERS SAY…

“Love Noel's Plumbing Supply! They are one of my favorite oddball plumbing parts purveyors. As a professional plumber, I rely on sites like Noel's to keep antique and rare fixtures alive. My customers and I are so grateful! ”

-Danielle E.

03/25/2026

$5.27

The B&K Products 888-221RP refers to a pack of multi-size brass replacement drain caps designed for use with most drainable valves, such as ball, gate, and stop valves. The pack includes three different styles of female-threaded caps and accompanying rubber gaskets to ensure a tight, water-tight seal.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

SKU: 32888 Category: Hydrant Hose Faucet Parts Tag: B & K Products

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B & K Industries Valve Drain Caps

888-221RP

These caps are used to seal the drain ports (also known as weep-holes or side overflows) on valves, which allows the non-pressurized side to drain without fully removing the cap. This is particularly useful for maintenance or winterizing plumbing systems.
3-piece pack
Made to work on valves with side overflow
Overflow hole allows non-pressurized side to drain without fully removing the cap
Ridged outer texture allows for easy operation open or close

Common questions about this product

Yes, this is the OEM recommended part.

If you’re not sure text us a picture 1-888-275-6635 or email us a picture at noelsplumbingsupply@fuse.net.

We will make sure you have the right part.

WHAT OUR CUSTOMERS SAY…

“These people were extremely helpful in taking me through replacing a 25 year old hard water frozen cartridge on my Philrich sink faucet. They were able to identify the correct part I needed from a photo I sent (I had it figured out wrong). I was pleasantly surprised they had an obscure part like this, but they also told me how to extract the old one when I couldn’t get it out. They said to unscrew it after I had concluded from YouTube the old cartridge was supposed to just slide out. It threaded out as they said and saved me buying a cartridge extractor and a hernia. The whole experience has been excellent. ”

-Pete L.

03/10/2026