GoLocalProv
Aug 27, 202313 best hair oils for healthy, hydrated hair
Aug 18, 2023How to Replace a Shower Valve in 6 Steps
Aug 06, 2023FFKM Sealing Ring Market 2023: Current Trends, Demand Analysis, Detailed Study, Production Growth and Regional Overview till 2029
Aug 28, 2023Gasket and Seals Market Overview, Top Companies, Region, Application and Forecast by 2032
Aug 23, 2023Plast
2-Port vs. 3-Port Relief Valves. (Image source: Plast-O-Matic Valves, Inc.)
3-port designs, on the other hand, are generally limited to #1 and #2.
2-port relief valves require a piping tee for by-pass and relief applications, but not for backpressure or anti-siphon applications. Unlike three-port style valves which are placed directly in-line and cause a drop in both pressure and flow, a valve "teed" off the line usually offers the best system design and ease of maintenance.
In most relief and by-pass applications, 3-port valves do not perform as well as 2-port valves installed on a tee. No 3-port relief valve is suitable for use as a backpressure regulator or anti-siphon valve, and no 3-port relief valve will deliver the flow and performance of a Plast-O-Matic 2-port relief valve.
The illustration above shows the essential differences between 2-port and 3-port relief valves; note the advantage of piping convenience in the 3-port installation compared to the advantage of unhindered flow in the main pipeline shown in the 2-port installation.
Advantages of a 2-Port Design:
Advantages of a 3-Port Design:
Plast-O-Matic offers the highest capacity backpressure/relief valve for both applications; Series RVDT 2-way and Series TRVDT 3-way. Because of the advantages of the 2-way valve, most sizes in PVC are available off-the-shelf. The TRVDT is available on special order. In addition to these high performance models, they offer economical options in our Basiks price/performance line.
Source: Plast-O-Matic Valves, Inc.
Advantages of a 2-Port Design:Advantages of a 3-Port Design: