Keep your Solo sprayer operating like new. Genuine Solo replacement parts. Fully assembled. Fits all Solo manual sprayers EXCEPT 400-1G, 405-B, 405-N, and one-hand sprayers. Easy to install and operate. Positive lock-on / lock-off feature for safety, comfort, and convenience. With the addition of the 4074654 hose barb, 49C9450 O-ring and 4074337 screw cap, this fully assembled shut-off valve will fit most brands of sprayers.