1. Overview
LDF type two-stage shut-off valve is a two-stage shut-off valve. The first stage is fast shutdown, and the second stage is slow shutdown. It is installed on the oil road between the governor main distribution valve and the turbine guide vane relay. By controlling the closing speed of the relay, it can prevent water hammer accidents and ensure the safe and reliable operation of the hydro turbine generator set.
On the basis of traditional products, this product has improved the sealing and the second stage closing throttling device, making it better sealing and more convenient for slow closing adjustment.
2. Technical parameters
Rated pressure: 2.5MPa 4.0MPa 6.4MPa
Power supply voltage: 220VDC 110VDC 220VAC
Connection method: flange connection, flange standard: GB9119-2000
Joint form: welded pipe, ferrule, flare
Ambient temperature: 5～45℃
Relative humidity: ≤95%RH
3. Dimensions
