Henry Pratt Company is a family-owned business established in 1946 and headquartered in Elgin, Illinois. The company is a leading global provider of high-quality flow control valves and control systems for the water, wastewater and power generation industries.
The guide describes the HP250II butterfly valve series, covering a wide size range from 3" to 72" with both flanged and mechanical‑joint ends. It details the patented E‑LOK® seating system, rubber‑seat on‑body design, and available actuation options such as manual traveling nut, electric motor, or cylinder actuators.
Technical data include pressure class M AWWA250B, working pressures up to 250 psi, temperature capability to 150 °F, and construction details like a ductile‑iron body and stainless‑steel shaft. Installation recommendations and flange dimensions are also provided.
| Working pressure | 250 psi |
|---|---|
| Maximum temperature | 150 °F |
| Size range (flanged ends) | 3" – 72" |
| Size range (mechanical joint ends) | 6" – 48" |
| Pressure class | M AWWA250B |
| Body material | Ductile iron (ASTM A536) |
| Seat type | Rubber seat (E‑LOK® design) |
| Actuation options | Manual traveling nut, electric motor, cylinder actuators |
The valve is rated for working pressures up to 250 psi.
It can operate at temperatures up to 150 °F.
The valve can be equipped with a manual traveling nut, an electric motor, or a cylinder actuator, plus a range of accessories.