Yep, always use plastic whenever possible when you’re dealing with high concentrations of bleach. Some plastics are better with SH than others (you can look up a material compatibility chart), but I’m pretty sure any of them would be better than stainless.
I just built this a week or so ago to go on tbe new trailer with a pressure Tek 5800 pump… I’m hoping to be spraying my little butt off on some roofs myself$$$$$
I was going to use a gun but everyone thats been doing this for awhile is running a ballvalve for adjustable flow. Im going to try the jrod mainly because ive never tried it. Ive never had to with rick because he has a secret 99 cent shooter tip that works just fine.
I’d go ahead and throw that ST-510 in the trash. Mine failed the first time I used it (thank god it was only water because I was testing it at home). Get a 1/2” schedule 80 PVC ball valve instead.
Plastic will fail quickly with SH . Sch80 pvc hold up decent. Poly fittings are better especially the good one that are fiber / poly blend. They do sell all fittings in kynar . But it’s all a trade off
Stainless steel especially 316 stainless “ the expensive stuff “ will last a while and take more abuse.
I use mainly sch80 pvc without many problems. I do try to replace them once a year because they will get brittle otherwise
What failed on yours . I’ve been using them for years . I usually get about 4-6 months out of mine without any rinsing. I just consider them a consumable like injectors and keep at least one extra on the truck
Mine the trigger cracked right down the center so I kept punching my hands when I used it and threaded bung on top cracked down the side where the pvc “wand” goes in which killed it for good. I honestly like the garden hose sprayer best between that trigger and the ball valve.
The spring in mine is getting weak and intermittently won’t stop. The new one is going to be in use next week. I did the ball valve before I bought the gun, I like the gun much better.