Adjustment range of the nitrogen seal valve
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Hello everyone, our unit uses self-acting pressure equalizing control valves of the ZZDG20 series. The pressure set point for these valves is 1.75 Kpa, with a regulation range of 0.5–4.5 Kpa. Could you please explain what this regulation range means?
The self-acting control valve has its own pressure adjustment range, allowing the pressure to be adjusted on-site to the desired level. It’s not that it can only maintain one pressure value from the factory
Swagelok has nitrogen seal valves; you can consult their technical staff.
It can adjust automatically within this range; it cannot adjust automatically once this range is exceeded
Based on the selection and calculation results, the adjustable range for the set point of the self-acting control valve is 0.5–4.5 Kpa; the user-defined pressure set point of 1.75 Kpa is sufficient.