Standard Ball Valves: Controlling flow On or Off
Hayward’s standard ball valves are available in PVC, CPVC, GFPP and PVDF materials. There are two distinct types of ball valves body styles, standard and true union.
Standard body ball valves (series QVC and QV) have threaded or socket connections and are not serviceable; when the seals wear-out the entire valve has to be replaced. Series QVC and QV are the least expensive style and generally used for non-demanding applications.
True union body ball valves (series QTA, TBB and TBH) have bodies that can be separated from the connections. This enables servicing (adjustment or replacement) of the valve's seats and seals without disassembly of the pipeline. Series QTA, TBB and TBH valves offer different features. The most common "industrial" version is the TBH series because they can be actuated, are rated for higher pressures and have all of the other available features.
The summary comparison chart will assist you with selecting the appropriate ball valve for your application. The cost factor can be interpreted as the TBH series costing about 15 times more than the QVC series.
While the Chinese origin helps keep the cost minimized, large orders sometimes have long lead times; the TBH series is made in the USA and almost any size order is typically shipped within 2-3 days.
All of Hayward’s ball valves have o-ring seals and there are two choices for material of construction, either FPM or EPDM. Additional information about the valve body and o-ring materials is hyperlinked in the chart.
How to select a ball valve for your application?
Select the most compatible materials of construction for the valve body and o-ring seals.
- Determine the desired connection type (only the TBH series include flanged connections)
- Review the features important to you; each series (and picture) in the chart is hyperlinked to its respective PDF datasheet, providing additional information about the design such as pressure and temperature limitations. (TBH series is only linked up to the 2" size)
- Download Hayward’s complete Engineering Product Guide for additional selection criteria, such as flow coefficient values, water hammer calculations and other technical formulas.
Use the navigation menu above to compare pricing, note the part number and call, email or fax your order!
Additional Resources (PDF files)
Threaded connections are NPT (American Standard) tapered pipe threads and it is suggested that a non-petroleum based sealant such as PTFE (Teflon™) plumbers tape is applied to your inlet/outlet pipe connections.
Flanged connections conform to ANSI 150# dimensions and a 1/8” thick full face gasket having a durometer rating between 50 and 70 is required for proper sealing. The bolts, nuts and washers should be properly lubricated and unless otherwise specified, Hayward’s typical scope of supply is only the valve (gaskets, bolts, nuts, washers and PTFE tape supplied by others).