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Leser Product Information
Type 431/433
Safety Relief Valve
Type 431
The type 431/433 safety relief valves are ideal relief valves for medium mass flows. Their large proportional range leads to consistent functioning and relief of pressure peaks, particularly with liquids. Both proportional and safety relief valves are characterized by particularly stable operation.
Type 433
The 431/433 spring loaded, cast construction with flanged connections for nominal pressure ratings up to PN 40 / PR #150. Three body materials: stainless steel, carbon steel and nodular cast iron.
| Technical Information | |||||||
| Type | Bonnet | Flange ANSI B 16.5 | Flange DIN 2501 | Form | Opening Characteristic | ||
| PR | NPS | PN | DN | ||||
| 431 | Open | #150 | 1/2"...6" | 16...40 | 15...150 | Angle Type | Safety Relief |
| 433 | Closed | ||||||