This replacement set includes For P07018 orange nut and P07019 clear lid, specially designed for pool sand filter valve head cover. Made of premium durable plastic, it features strong resistance to sun exposure, no discoloration or brittleness for long-term outdoor use. Sturdy plastic construction prevents deformation and breakage, maintaining stable structure all the time. Leakproof design effectively avoids water leakage and pressure loss during filtering and backwashing, keeping your sand filter running steadily. Precise size ensures perfect compatibility as an ideal replacement for old or damaged parts. Tool-free and easy manual installation, convenient for daily inspection, sand replacement and valve head maintenance. Lightweight and practical, it is a must-have replacement accessory for your pool sand filter pump.