Flow Control Valve – Mark 708 Series
- The LowFlow Mark 708 Series control valve was developed to provide accurate control for high pressure fractional flow applications.
- Pneumatic and electrically actuated control valves designed to enhance performance to ensure precision control.
- Cv’s ranging from 1e-5 to 4.0 (9e-5 to 3,4 Kv) in line sizes 1/4″ through 1″ (DN8 through DN20)
- Quick change option for applications requiring frequent trim changes without disturbing the actuator setting.
Key features
- Bolted body connection – for ease of maintenance
- Quick change trim – eliminates stroke adjustment when changing trim
- Guided trim – extended orifice and plug guiding are standard
- Rolling diaphragm – ensures that the effective diaphragm area remains relatively constant, regardless of stem position. This increases accuracy of the actuator when positioning the valve by ensuring a linear response to input signal changes.
- Spring-loaded TFE/Chevron packing – the spring-loaded packing maintains a proper compression, while minimizing excessive friction. This alleviates the need for most field adjusting. The TFE packing is suitable for temperatures to 450°F (232°C), while braided or Graphite/Grafoil may be used for higher temperature requirements.
- Threaded bonnet for quick disassembly
- Secondary stem connection eliminates stroke adjustment when changing trim
- Flow control valve has an optional side mounted or top mounted positioner
Application areas
- Hydrogen fuel cell test systems
Contact us
- LowFlow is your partner for flow control valves. Contact us – we are looking forward to discussing your requirements.
