399-392 Series

Ultraflo proudly offers the 399/392 Series sanitary/chemical butterfly valve. 

The 399/392 Series provides a bi-directional pressure rating of 150 psi with stainless steel disc/stems and 100 psi with encapsulated disc/stems. 

Undercut disc/stems, rated for 50 psi and requiring less operating torque, are also available. 

The 399/392 Series has been designed for applications requiring high flow, minimal product entrapment and complete protection of valve components from the line media.

Valve sizes are from 2” – 12”. 399 valves are Wafer style bodies offered in Stainless Steel, Cast Iron and Aluminum. 392 valves are Lug style bodies offered in Stainless Steel and Nodular Iron.

 Ultraflo’s resilient Seat is the heart of all 300 Series valves. 

The seat incorporates a dovetail retention system ensuring positive alignment and ease of assembly. 

The PTFE liner, as shown below, is isostatically molded to extend up through the stem hole, completely isolating the elastomer backing from the line media in the event of primary seal failure.

 All 300 Series seats include a flange seal molded into the seat face providing a positive seal with all popular flanges. 

Valves installed in dead end service (downstream flange removed) are derated to 75 psi for 2”–12” valves, 50 psi for 14”– 24” valves.