Are the 28-PFV-xx Series PVC Float Valves Sch. 40 or Sch. 80?

Are the 28-PFV-xx Series PVC Float Valves Sch. 40 or Sch. 80?

The answer is neither!

The terms Schedule 40 and Schedule 80 apply to pipes made from steel, stainless steel, red brass, and PVC. They also apply to PVC fittings.

PVC valves are not rated by the Schedule 40 or 80 pressure-temperature charts, but rather by the pressure & temperature rating published on the valve’s data sheet. Therefore the 28-PFV-xx series PVC float valves are neither schedule 40 or 80.

The 28-PFV-xx series PVC float valves are rated for:

■ Max Pressure Rating: 100 PSI

■ Working Temperature Rating: 140°F (60°C)

PVC products are significantly impacted by temperature, so the applicable correction factor must be applied.

Temperature Correction Factor for PVC Valves

As temperature increases, working pressure decreases. The optimal working pressure for PVC valves is 150 PSI @ 73°F (22°C).If the temperature increases above 73°F (22°C), use the PVC correction factor to determine the new working pressure. Multiply the maximum working pressure by the correction factor to get the new operating pressure.

CAUTION: Some manufacturers misrepresent valves (ball valves, for example) as being schedule 40 or 80 causing confusion. Refer to the link below for more information:

https://support.boshart.com/do-the-terms-schedule-40-and-schedule-80-apply-to-pvc-ball-valves