Yes, pressure release valve seat is a Delrin washer, the rounded point of the black knobbed pressure release screw tightens into center of Delrin washer to seal. A brass fitting screws into the threaded hole, the pressure release screw threading into brass fitting. The Delrin washer pictured looks badly crushed, suspect heavy hand by owner before OP.
Design works well, just wears Delrin washer center out with required frequent pressure release valve use. Every couple of months, or so, I pressure up system with test plug and use spray bottle to check for leaks. Invariably, slow leaks found here, picked up a pack of 10mm Delrin seals on Amazon, easy to change if old seal not mashed by heavy hand when installing brass fitting. WM
This worked thanks. I got my heat gun out heated the crap out of the tip of a flat blade screwdriver and was able to screw it out. Thanks much.
Yes i remembered you had told me and this is what I tried first. That's why the hole in the pic was so mangled. I used a wood screw screwed it in several mm and pulled on it. It did not want to come out. I tried the other method and although a little more involved it worked. Once the Delrin pressure ring was slotted with the screwdriver ( let it cool down) it unscrewed fairly easily.
Should I heat up the compressor and snug down the line or would you do it cold. It's leaking at bolt that threads into the top of the head not the line. I'll take a pic. Glad that worked for you (too). I also had the threads from the air breather snap off a couple times & used the same method with a larger screwdriver.
