This genuine Bosta PVC-U two-way ball valve is the OEM flow-control component specified for the Bosta Counter Current System, Type STP. Featuring dual 75 mm solvent-weld (glue socket) ends and a distinctive red lever handle, it provides reliable on\/off flow isolation in the high-flow pipework of STP counter-current installations. Its full-bore design minimises pressure drop, keeping the jet stream at full performance.<\/p>\n
This valve is designed specifically as a replacement or installation component for the Bosta Counter Current System, Type STP (including STP 2200 T, STP 3000 T and STP 4000 T variants). The 75 mm solvent-weld socket ends bond permanently to standard PVC-U pressure pipe of the same outer diameter using PVC solvent cement (sold separately). The red handle colour allows quick visual identification of this valve’s function within a multi-valve installation.<\/p>\n
Sourcing a genuine Bosta valve ensures exact dimensional compatibility with STP system pipework and matching pressure ratings. The PTFE ball seat and EPDM O-ring seals are selected to withstand pool water, chlorinated media and the continuous flow demands of a counter-current pump \u2014 off-brand substitutes may use inferior seal materials or slightly different socket tolerances that can cause leaks over time. Replacing like-for-like also preserves any installation warranty on the STP system.<\/p>\n
Installation requires cutting out the existing valve or preparing the pipe run, dry-fitting the valve to confirm alignment, then bonding with PVC-U solvent cement following the cement manufacturer’s cure time before pressurising. Allow the line to depressurise fully before removing an old valve. Professional installation by a qualified pool technician is recommended given the pipe diameter and the importance of a leak-free joint in a counter-current system.<\/p>","protected":false},"excerpt":{"rendered":"