Hello Kharizmah,
If you are experiencing flow issues, we'd be happy to send the parts needed at no cost to you. Your faucet is backed by our lifetime warranty, which protects both finish and function for as long as you own it. Please contact our consumer support team at 1-800-PFAUCET (1-800-732-8238), and reference case # 201608632800. We hope to hear from you soon.
Thank you, Pfister