filter pup joint screen in stock

The Hunting Downhole Filter is a simple tool that is run above any debris intolerant tool to ensure full operability. This is particularly useful when cleanliness of circulating fluid is poor, unknown or whilst recirculating the same fluid.

I purchased this filter to be installed before the washing machine to filter the calcium particles in our water system. First time I installed the filter, I did not pay any attention to the built qualities of the filter. When I installed it, it seemed everything were working good without leaks. However, over the night, the filter housing leaked water from the o-ring in the clear filter housing. The other fittings on the filter were leak free. The clear filter housing was hand tightened, but it should not have leaked water. our water pressure is at about 70 PSI.

When I disassembled the filter down and investigated the parts, I found lots of burrs (flaw in the mold caused access plastic to squeeze out through the mold joints) at the mold joints on the black plastic housing. These burrs were at the housing rim and the sides of the housing. See attached photos before clean up. The clear filter cup was perfect with no issues, but the black O-ring was damaged by the burrs scrapping the rubber seal surface when the filter housing was assembled. Also, the surface on the rim which was to be sealed against the O-ring was rough, so creating a good seal was questionable.

I thought about returning the filter for a better made filter. This led me to research the website and looking at these specific locations on the filters for any issues from the pictures on the websites. After reviewing many different brands and models of the same $10 to $20 price range, I did not see any differences, unless I pay more money for it.

So, I decided to correct the problem myself by shaving the burrs off from the joints. I took a utility knife blade and carefully scraped the burrs off. After that, I used extra fine sandpaper to sand down the joints. I also sanded the rim surface with same sandpaper just to get rid of the roughness. See the pictures showing after sanding. Now I have this filter back in service. It has been two days without any leaks. I guess the damage on the o-ring was not serious enough that it sealed the filter housing okay.

However, there is another flaw I found as I was assembling the filter back together. The filter screens the filter comes with is shorter than the space the screen fits between upper housing and the clear filter cup. if you do not install it just right, you end up getting a gap at the bottom of the cup such small particles will escape the filter screen. For this reason, I recommend you installing the filter screen in the upper black housing barely fitting over the inner tube first. And then, put the clear cup carefully over the screen until the bottom edge of screen makes a positive contact with the bottom of the cup before screwing the upper housing and the cup together to finish the assembly. Do not over tighten the filter housing and the cup. After all they are plastic.

Flow iron pup joints from Cameron deliver maximum total life cycle cost savings, even in the oil and gas industry’s most demanding applications. For all of your flow iron requirements, from high-stage-count hydraulic fracturing to cementing, well testing, and even abrasive flowback, you can count on Cameron for high reliability and low cost.

These pre-assembled kits bring together both a filter and a pressure regulator, providing you with a complete assembly. The kits use a 150 mesh stainless steel filter screen, a flush cap and a pressure regulator to maintain a consistent 25 or 40 PSI at flows between 0.5 – 15 GPM. Available in either a ¾” or 1” inlet, both models have a ¾” outlet, ready to be used in all drip irrigation projects.

The filters are available in various sizes including ¾”, 1” and 1½”.  The smaller filters have a 150 mesh stainless steel filter screen and a flush cap for easy maintenance.  The 1½" filter has a durable 120 mesh nylon filter screen and an easy to use flush valve.