Combined valve type throttle pipe device

摘要: The utility model provides a combined valve type throttle pipe device which comprises lifting crow seat, main spray passage, first manual second liquid operated passage and sensor flange, wherein the is arranged in middle of seat; are on one side passage; other flange upper end pressure connected with remote control box. characterized that through valve; third box valve. has advantages risk obviously reduced, vibration at work product weight lightened, volume reduced.