I've been testing a bunch of chemicals on a fleet of donated joker valves from Groco, Jabsco, and Raritan. We're measuring changes in stiffness, resilience and size. We have a test rig (flanges and a standpipe) where we can test for leakage (back flow). We have installed all 3 types in test boats on matching heads (they are dimensionally interchangable) for field testing.
I've certainly seen joker valves begin to leak. Sometimes they simply have something lodged that some vigorous pumping will clear. Sometimes after years of use there is just enough scale on the lips to preclude a tight seal. If enough water was flushed to clear the line, backflow is not very serious anyway.
Has anyone experienced a failure due to chemical that included blistering or gross distortion? Any thought why one would be more durable or trouble-free than the others?
- ethylene glycol
- propylene glycol
- methanol
- CLR
- vinegar
- urine
- ammonia
- bleach
- Aqua-Kem
- Lysol Toilet Bowl Cleaner
- baby oil
- corn oil
- olive oil
- water proof grease
I've certainly seen joker valves begin to leak. Sometimes they simply have something lodged that some vigorous pumping will clear. Sometimes after years of use there is just enough scale on the lips to preclude a tight seal. If enough water was flushed to clear the line, backflow is not very serious anyway.
Has anyone experienced a failure due to chemical that included blistering or gross distortion? Any thought why one would be more durable or trouble-free than the others?