Tag: 3-port valve

Plast-O-Matic Valves Inc. has recently released new 2-port and 3-port relief valves. The differences between a 2-Port Relief Valve and a 3-Port Relief Valve are as follows:Advantages of a 2-Port Design- 2-port relief valve can also be used as a backpressure regulator and an anti-siphon valve; 3-port cannot.- Choice of in-line or angle pattern increases versatility in piping design.- Flow capacity is better; 2-port valves provide less restriction and less deadleg.Advantages of a 3-Port Design- Smaller “footprint” in a system.- No need for additional piping tee.- Easy replacement in existing systems using 3-port valve.In most relief and by-pass applications, 3-port valves do not perform as well as 2-port valves installed on a tee.