An RV Faucet from Phoenix is a result of over 100 years of experience of making faucets. Featured above are 4 inch lavatory faucets in a variety of designs. Some of the faucets have a Brass underbody (stems and waterways), while others have DuraPro underbodies with brass or plastic stems. DuraPro is a glass-reinforced resin that is lead-free and offers superior resistance to household chemicals commonly used on or around plumbing fixtures. DuraPro underbodies are assembled by spin-welding, which creates a single piece underbody, eliminating mechanical joints and leak points.