Mansfield Sill Cock Repair Kit 630-7755

White and tand plastic bonnet nuts black rubber seals washers o-rings round grey graphite packings stainless screw and washer with bright brass retainer cup and brass screw.

WHAT OUR CUSTOMERS SAY…

“They had my part shipped the same day. I mistakenly checked that I would pick the part up at the store and they fixed it in minutes. ”

-Michael F.

01/04/2026

$30.47

The Mansfield 630-7755 (often referred to as the Prier 630-7755) is a comprehensive service repair kit designed to fix leaks in 300, 400, and 500 Series frost-proof wall hydrants.

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.

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Mansfield Service Kit for 300/400/500 Series Hydrants

630-7755

It replaces all standard wear parts—such as seat washers, packing, and O-rings—to stop dripping or leaking from the handle area.
Works with original Mansfield wall hydrants and newer Prier Diamond 300/400 Series models manufactured from 1970 to the present.

Kit assembly image with all components.

Related Documents

300 Series Faucet Parts Breakdown

400 Series Faucet Parts Breakdown

500 Series Faucet Parts Breakdown

UPC:670210370363

Customer submitted images.

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…

“I have come here as a maintenance technician countless times. NOT ONCE did these guys fail to impress me with their knowledge. They are across town for me and I don’t complain due to their unmatched service. I can bring in a busted chewed up cartridge or part and within 10 seconds the guys are like “ yup we have one right over here” and will bring me the exact match from what I had. Simply top tier. -SNS management ”

-Isaac G.

06/15/2024