Models 300, 600 Air/Gas/Steam Relief Valves

ASME Section I Steam and ASME Section VIII Air/Gas/Steam

Model Descriptions

• Model 300: Cast steel, exposed spring, full nozzle with SS trim. ANSI 300# inlet flange and 150# outlet flange.
• Model 600: Cast steel, exposed spring, full nozzle with SS trim. ANSI 600# inlet flange and 150# outlet flange.

Pressure and Temperature Limits

• Models 300: 15 to 410 psig @ 800 o F, 505 psig @ 750 o F, -20 o F minimum temperature
• Models 600: 15 to 825 psig @ 800 o F, 1000 psig @750 o F, -20 o F minimum temperature

Applications

• Steam Boilers and Generators
• Pressure Reducing Stations
• Air/Gas Compressors – reciprocating or rotary.
• Pressure Vessels – including tanks, receivers, intercoolers, oil/gas separators, lines.

Options
High Temperature Alloy Spring

Features and Benefits

• Heavy duty construction of high quality cast steel with Stainless Steel full-nozzle trim for optimum performance.
• Bolted yoke design for easy maintenance.
• Steel yoke incorporates a cover-shield for guiding surfaces and provides for fully exposed spring.
• Seats lapped to optical flatness for tight shut-off
• Dual control rings offer easy adjustability for precision opening with minimum pre-open or simmer and exact blowdown control.
• Every valve 100% tested/inspected for pressure setting, blowdown and leakage.
• All adjustments are factory sealed to prevent tampering or disassembly.