Key facts
- Manuals
- 1
- Languages
- EN
- Last added
- 2012-01-08
Featured PRATT manuals

Pratt HP250II Butterfly Valve Product Guide
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.
Covers: Design and Construction Details · Pipe Mating Chart · Features and Benefits · E-LOK Seating System · Seat on Body Design Advantage · Suggested Specification
Latest PRATT manuals
Pratt HP250II Butterfly Valve Product Guide
Product Leaflet 12 pages · 938 KB · ENThe Pratt HP250II butterfly valve product guide provides specifications, features, dimensions, and installation options for sizes 3‑72 in.
Questions answered in PRATT manuals
What pressure rating does the HP250II butterfly valve have?
The valve is rated for working pressures up to 250 psi.
What temperature can the HP250II operate at?
It can operate at temperatures up to 150 °F.
