Non-code Steam Service, Sentinel Relief Valves

M odel Descriptions
Model 40R: 1/2-inch or 3/4-inch male NPT inlet with top discharge to give visible warning of system overpressure.
Model 40RL: Same as Model 40R with plain lift lever.

Note: For other valves suitable for sentinel (warning) service, see Model 1 and Models 264, 265

Pressure and Temperature Limits
1 to 400 psig -60° to 850°F

Applications

• Sentinel (warning) on steam equipment. Intended as audible warning device, not for pressure relief.
• Steam turbines.

Options
No Options Available

Features and Benefits

• All parts are Stainless Steel
• Precision lapped beveled seats for optimum performance.
• Pivot between spring and disc corrects misalignment and compensates for spring side thrust.