Big Brand Water Filter USA manufactured floats are non-corrosive, heavy-duty, high-quality PVC float valves that are an excellent non-corrosive alternative for brass float valves made by Robert Manufacturing and Watts-Flippen for fluid level control. Not to be confused with a plastic float valve, these float valves are made of a high-grade NSF rated PVC. Our patented design utilizes the latest materials for increased performance, reliability and economy. Big Brand Water Filter PVC float valves are the cost-effective alternative to stainless steel and the non-corrosive alternative to brass float valve.