Applications :
The Dresser 1700 series Maxiflow safety valves are used extensively in sub-critical, drum type boilers and super-critical, once-through boilers. Inlet pressure ratings from ASME 600 class thru ASME 4500 class.
1700 Maxiflow™ Safety Valve
- Design in accordance with ASME B 16.34 – shuttle type
- DN from ¾ ” to 16”
- Class from ASME 150# to ASME 2500#
- Metal to metal seat / Soft seat only for S4300
- Balanced bellows as an option
- Connections: Flanged (RF flange, class from 150# to 2500# according to ASME – ISO – GOST) and screwed (S4300)
Description
Benefits:
The Dresser Consolidated 1700 series Maxiflow safety valves are field-proven and are designed to provide optimum boiler overpressure protection. Increases plant efficiency by reducing steam losses via improved seat tightness and rapid opening to full lift with rapid closing as vessel pressure is reduced.
Features:
• Side rod construction provides extreme temperature compensation for thermal expansion of the body for a more consistent spring load – improved seat tightness
• Thermodisc thin flexible design for repeatable seat tightness
• Cover plate provides faster full lift by rapid venting
