Edwards nXDS Series, Instruction Manual, Page: 23 / 32

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Exhaust nozzle
A735-01-840 Issue B
6 Exhaust nozzle
6.1 Description
The exhaust nozzle ( Figure 1 , item 5) can be used to connect the pump exhaust using a plastic hose in place of a steel
bellows. The Nozzle will accept a 12 to 15 mm plastic hose.
6.2 Technical data
Figure 6 - Nozzle and dimensions
6.3 Installation
6.3.1 Install the exhaust nozzle
Ensure the pump is switched off before fitting.
1. Using a 30 mm AF spanner (not supplied), remove the NW25 exhaust port from the pump (retain for future use).
2. Using a new O-ring provided, manually screw in the plastic exhaust nozzle until resistance can be felt. Tighten
the nozzle to 5 Nm using a 36 mm AF spanner (not supplied).
3. Push on the plastic hose, use a retaining clip to prevent the hose from becoming unattached from the nozzle.
CAUTION
This exhaust nozzle is not intended to withstand positive pressures. Ensure that any system valves are correctly
scheduled to avoid pumping to a closed exhaust line. If using a plastic hose, avoid sharp bends which may kink
the hose and restrict the exhaust line. Edwards recommends using reinforced plastic hose. Refer to the
installation section of the nXDS pump instruction manual.
Table 10 - Nozzle technical data
Nozzle thread 3/4” BSP
Nozzle tube ∅ 15 mm
Table 11 - Exhaust nozzle - checklist of components (A505-09-000)
Qty Description Check (

)
1 Nozzle
1 O-ring