Models 910, 911, 916, 917, 920, 921, 927

ASME Section VIII, Air/Gas/Steam/Liquid, ‘UV’ national Board Certified. Also available for vacuum service.

Model Descriptions

• Model 910: CS body and bonnet with SS trim.
• Model 911: All SS construction.
• Model 916: Same as Model 910 except resilient seat/seals. Superior ‘leak-free’ performance.
• Model 917: Same as Model 911 except resilient seat/seals. Superior ‘leak-free’ performance.
• Model 920: Steel body and bonnet with screwed cap and stainless steel spring for organic fluid vaporizers (ASME Section I – ‘V’ Special Use or application). 1,400 psig maximum set pressure.
• Model 921: Steel body and bonnet with plain lift lever and stainless steel spring for forced flow steam generators (ASME Section I – ‘V’ Special Use or application). 1,400 psig maximum set pressure.
• Model 927: Steel body and bonnet with packed lift lever and SS spring for high temperature/pressure hot water boilers (ASME Section I – ‘V’ Special Use or application). 1,400 psig maximum set pressure.

Pressure and Temperature Limits
See Catalog PDF for Pressure and Temperature Limits

Applications

• Air/gas compressors, intercoolers, aftercoolers
• Liquid filled pressure vessels/systems, ASME Section VIII (UV).
• Pressure vessels – containing gas, air, liquid or steam, including tanks and receivers.
• Vacuum systems including pumps, tanks and equipment.
• Oil/gas separators.
• Overpressure relief and protection of pumps, tanks, lines and hydraulic systems.
• Bypass relief or pressure regulation.
• All stainless steel Model 911 valves may be suitable for sanitary/edible applications.

Options

• Threaded cap
• Threaded cap with gag
• Plain lever
• Plain lever with gag
• Plain lever with vibration dampener
• Packed lever
• Packed lever
• Packed lever with gag

Features and Benefits

• Available with soft seats.
• Threaded cap standard (back pressure tight). Maximum back pressure 50 psig [3.4 barg].
• Hex on valve nozzle provides for easy installation.
• Single control ring offers easy adjustment of blowdown.
• Pivoting disc design offers exceptional seat alignment.
• Guide to nozzle ratio reduces friction.
• Valve bodies are heavy duty castings.
• Full nozzle design for optimum flow performance.
• Threaded side outlet for piped off discharge to eliminate fugitive emissions.