HydraFlex Injectors not holding up

[GoBuckeyes]

"Chem-Flex Injectors are the most chemical resistant injector on the market. These long lasting injectors are manufactured using Kynar Venturi inserts, stainless steel connections, a Hastelloy spring, a Teflon check ball, and an exclusive XFC o-ring material."

I'd like to know how they make the "most chemical resistant" claim?! I've had at least a half a dozen injectors fail with various presoaks, acid and alkaline. I have one that needs to be changed tomorrow that is less than 4 months old! They all fail the same way, they start leaking between the plastic and the SS threads. Time to call Hydra-Flex and see what they say. Anyone else having troubles?

 

[Ric]

Yes, let us know what you find out.

"Chem-Flex Injectors are the most chemical resistant injector on the market. These long lasting injectors are manufactured using Kynar Venturi inserts, stainless steel connections, a Hastelloy spring, a Teflon check ball, and an exclusive XFC o-ring material."

I'd like to know how they make the "most chemical resistant" claim?! I've had at least a half a dozen injectors fail with various presoaks, acid and alkaline. I have one that needs to be changed tomorrow that is less than 4 months old! They all fail the same way, they start leaking between the plastic and the SS threads. Time to call Hydra-Flex and see what they say. Anyone else having troubles?

 

[GoBuckeyes]

Well, I'm still working on getting some more feed back from Hydra-Flex. I did learn that Chem-Flex injectors carry a one year warranty; I was unaware of that. I wanted to read the terms of the warranty but couldn't even find the word 'warranty' mentioned on their website or product literature. It's possible that I missed it, but I doubt it. Apparently under that warranty you may not use any sodium hydroxide, potassium hydroxide, phosphoric acid, sulfuric acid or the obvious hydroflouric acid based cleaners. Dawn dish soap is acceptable, Dawn ultra concentrated is not.

Anyone who has had a Chem-Flex fail, how has it done so? Most of mine have developed a leak on the input side of the injector. The side of the plastic ring develops a small crack about a 1/16th on an inch perpendicular to the stainless steel threads and will leak when pressure is applied. My latest failure was a bit different. It did not leak under pressure, however, when pressure was removed from the input side of the injector the back pressure would make it leak on the discharge side where the stainless meets the plastic ring. For the record, my water temp is well below their 175°F and my input pressure is only 160psi.

 

[kdotproctor]

This is exactly what ours is doing.

 

[GoBuckeyes]

I have found that the Chemflex are not suited for Alkaline. You'll get decent life out of the for waxes and acids. We have mostly switched to Dema Rocket Injectors.

 

[Roz]

I have found that the Chemflex are not suited for Alkaline. You'll get decent life out of the for waxes and acids. We have mostly switched to Dema Rocket Injectors.

Same here, chem-flex do not last for hi or lo PH. Switching our WW equipment to Dema as they go bad.

 

[Greg Pack]

My injectors are holding up ok. Four year old auto and I don't think I've replaced one yet. However, it is a friction unit so the diluted products are relatively mild in comparison to touch free strengths. The concentrate does have various acids(no hf) and hydroxides in there.