Prime Spray Valve Assembly Replacement Kit 0512250

Prime Spray Valve Assembly Replacement Kit 0512250

  • $49.97
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Part #: 512-250, 0512250, 512250 or 0516761

This is a very common part to repair on a sprayer. Just through normal wear and tear, the prime switch will feel lose. Despite which position the switch is, the pump itself will be stuck in either "Prime" or "Spray" mode. Thankfully this kit fits 90% of Wagner Pumps and Non-commercial Titan pumps. And it's easy to replaces and much cheaper than a new sprayer!

This newer 90 degree prime spray valve kit replaces the older "Set Screw" style prime/spray assemblies. And that's a good thing! The older set screw knobs tended to strip. These newer 90 degree ones almost never accidentally come off because of the retaining clip as shown in the image.
Easy part to put on, takes us about 2 minutes, a first timer would take about 5 mins, but the included instructions are very clear and helpful. Main thing is to look at the instructions and put the parts on in the order the instructions show before you put them retaining clips on. (The retaining clips hold very well and are hard to pull off, so get it right before you slip the retaining ring (rings) on.) TIP: A small socket works well to press on the retaining clip. 

Includes all the little parts as shown in the color picture at top of page including:

  • 1 Seat
  • 1 Stem/Ball Assembly
  • 1 Spring
  • 1 Star Washer
  • 1 Hex Nut
  • 1 Cam
  • 1 Knob
  • 2 Retaing Clips 
    (you only need to install one)

Fits about 90% of all Wagner pumps and many smaller Titan Pumps!
Including (but not limited to) 404+, 833, 834, 844, 505, 3566, 847, 4785, 9140, 9150, 9170, 9190, 1700, 1900, 9210, 9250, EP2105, EP2205, 965, 945, and more.

Only pumps we know it does not fit is the older HP/ST (1250 and Super Stinger) style diaphragm pumps, and the big commercial piston pumps that use the dump valves like Ep2510,2400,2300 etc.

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Customer Reviews

Based on 5 reviews
Chris LaBonte
Parts purchase

Parts for fine.

Alan Faas
Good product

Good service

TR Bocchi

Replacement primer part was unsatisfactory. The knob will not stay on with the Chinese clip

Jesus Diaz
Spray painter prime valve

I will have to just stay neutral as the valve did not solve the priming issue on my sprayer.

Douglas Robinson
Primer Spray Valve

Was highly impressed with the service and speed of delivery. Thoroughly recommend 😎

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