These versatile 1" (2.5 cm) valves include key standard features such as flow control, manual internal and external bleed that are popular with agriculture and greenhouse growers. The valves' wide flow ranges make them a good fit for a host of drip irrigation applications. Constructed of heavy-duty, corrosion and UV resistant PVC with stainless steel spring and hardware and a double beaded SANOPRENE™ diaphragm to provide a leak-proof seal. These economical valves have a good reputation and a five year warranty making them an easy choice for agriculture and greenhouse growers.