A: The red cap is a shipping and installation cap used to keep dirt out during install and to be able to lift the popup afterward to install the spray head. If you plan to take the sprayer off temporarily then the cap should be used to keep the popup clear. If you are trying to block off a head using the red cap it is not designed for that. The popup will still rise, the cap will likely leak and will probably eventually blow out.
A: No, the red cap is a “flush cap” that is designed to allow water to flow through the cap to allow any debris to leave your system before installing a nozzle.
A: Not sure from the picture. Most 570 series heads are 4 inches. Search in the description of the product online. It will list the dimensions.
A: This is what is considered a 4” pop up. The body of this spray, from inlet to top of spray, is just over 6”. The stem/riser pops up just over 4”. Thank you.
A: Yes, this spray body will replace obsolete Irritrol part number HS400. The pop up spray body will require a Toro, male-threaded MPR+ nozzle or specialty nozzle to complete the installation. Thank you.
A: I have no idea. Check with Google
A: The Toro 570z can be used in place of the Irritrol. However, some people feel that the 570z is a poor choice for replacement. I have not experience with the Irritrol sprinkler.
A: Model 53742 has “X-Flow” technology. “X-Flow” uses a check valve that shuts off the head to eliminate erosion and water waste in the event that the nozzle is damaged or sheared off.