Prier

Prier 630-7500 Vacuum Breaker Service Parts Kit - 2 Pack

$15.99

57+ bought in the past month

About this item

  • For use with model No. 578 series wall hydrants
  • Vacuum breaker service parts kit
  • Heavy duty ABS plastic for durability
  • Precisely cast to fit perfectly
  • Contains plunger assembly, bonnet and cap
$15.99

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Product details
Size1/2 inch
MaterialAcrylonitrile Butadiene Styrene, Plastic
BrandPrier
ColorSilver, White
Item dimensions L x W x H1 x 2 x 1 inches
Connector TypeCap
Exterior FinishABS
Thread TypeNPT
Item Weight0.05 Pounds
Number of Pieces2

Product videos

Product video 1

Customer reviews

4.6413 ratings
  1. 588%
  2. 413%
  3. 30%
  4. 20%
  5. 10%

Customers say

Customers find the vacuum breaker kit easy to install and appreciate that it works well with Nibco 90 connections.

★★★★★

So easy to install! Works great.

Justin NMarch 19, 2025✓ Verified purchase

I had left my hose connected to the hose-bib (sillcock) in a freeze and it broke the old back-flow preventer. So I removed the entire assembly from the house before I realized that you could just replace the little plastic back-flow preventer! Extra work , but I was happy to find this replacement part which took all of 2 minutes to install and it works fine. I even bought a 2 pack so when I do the same thing again in a few years I'll already have a replacement waiting! :-) Read more

★★★★★

Absolutely fits a Nibco 90 - installed and confirmed

MisterYMarch 16, 2026✓ Verified purchase

This part absolutely works as a replacement for Nibco 90 anti-siphon valve. I replaced an original Nibco 90 valve. You do NOT need the rubber washer/o-ring like the original had, and this does not come with one. In fact, if do you put a rubber o-ring on it, you may have a small pressure leak through the inside plunger washer seal. To avoid cross-threading, push this in firmly first and make sure it is seated properly before you start turning it (you may feel a slight "snap" when it's fully seated before you tighten it). Finger tighten first until it's all the way in--do NOT use a plier until the final 1/16th of a turn. If you can't start to thread it and tighten it all the way using only your fingers, STOP, back out, check and clean out the threads in the faucet to remove any bits of calcification or debris, and try again. Test the valve for good seal before you snap on the cap by opening the faucet. The inside plunger will pop up and create a tight seal. You might get a drop or two of water come out the top before the plunger washer seals the hole, but you should not see any water come out after it's been fully pressurized. Read more

★★★★★

Exact replacement for Prier hose bibb

M. CharlesMay 11, 2024✓ Verified purchase

This was a perfect fit replacement for a Prier hose Bibb (spigot) installed around 1992. Saved me 50 bucks and trying to solder on a new one. Read more

★★★★☆

Works great

lauraMay 27, 2024✓ Verified purchase

Deliver fast and fit perfect Read more

★★★★★

These fixed our hydrant after we left a hose connected in the winter

CustomerMarch 26, 2025✓ Verified purchase

This was a simple fix, and makes me grateful I bought USA made hydrants with repair part availability. I’ll gladly continue buying Prier hydrants for the homes we build Read more

★★★★★

Resolved Leaking

Mick A.August 3, 2025✓ Verified purchase

This kit fixed a leaking faucet. A little disappointed life expectancy for an expensive bib faucet from Prier, because it started leaking after one year. Read more

★★★★★

10 stars! Works!

Reviews by ILoveAmazon15May 10, 2024✓ Verified purchase

So happy and this was such an easy fix, just pop the top off the anti-siphon valve get some pliers to unscrew the old piece and then pop this one on and bam you’ll be done in literally two minutes, this is also in case one of the plastic pieces in the first one lol good luck and thank you so much for the YouTube video that sent me to this Read more

★★★★★

Good quality parts replacement

Pete CampanellaApril 24, 2024✓ Verified purchase

This part fixed my leak! The part I ran to get at the big box store did not, was of much less quality than the Prior replacement. Thank goodness for Amazon & Prior! I wasted time, money and frustration using the orange big box store cheapest part they could find to maximize their profit. A 3-minute Amazon search, a few days for delivery and under a minute - problem solved! Read more

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