Vrx Vent Restrictor; Vent Port Adaptor; Prx Purge Restrictor - Edwards nEXT730D Instruction Manual

TAV5 vent valves have an 0.5 mm diameter orifice and are suitable for venting small
vacuum systems of < 5 litres. TAV6 vent valves have an 1.0 mm diameter orifice and are
suitable for venting bigger vacuum systems.
The vent valves are pre-wired to Vent Option 1 and that the default is set to fully vent at
50% (option 0). The solenoid valve is fitted in place of the manual valve, or alternatively
can be fitted with an adaptor (supplied with the valve) and be used with any suitable
NW10 flanged port on the vacuum system. The vent port adaptor allows the vent port or
the purge port to be used with any suitable NW10 fitting.
Table 41 TAV vent valve and vent port adaptor
Product
nEXT TAV5 kit N/C connector fitted (0.3 m)
nEXT TAV5 kit N/C bare wire (3 m)
nEXT TAV5 kit N/O connector fitted (0.3 m)
nEXT TAV5 kit N/O bare wire (3 m)
nEXT TAV6 kit N/O bare wire (3 m)

14.5 VRX vent restrictor

Use a VRX fixed orifice vent restrictor to restrict the flow of vent gas into the pump.
Table 42 VRX vent restrictor
Vent restrictor
VRX10
VRX20
VRX30
VRX50
VRX70

14.6 Vent port adaptor

The vent port adaptor has a 1/8 inch BSP male thread that can be screwed into both the
vent port and purge port, making them suitable for NW10 fittings.
Table 43 Vent port adaptor
Vent port adaptor
Vent port adaptor NW10 - 1/8
inch BSP male

14.7 PRX purge restrictor

The PRX10 is a modified DN10NW centring ring that filters the purge gas and restricts its
flow rate to the recommended flow of 25 sccm. A vent port adaptor must be fitted to
the purge port in order to connect a purge restrictor to the pump.
B8J200880_D
300812671_002_C3
B8J200880_D - Accessories
Orifice diameter (mm)
0.1
0.2
0.3
0.5
0.7
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Item Number
B8G200835
B58066040
B8G200834
B58066010
B58066020
Item number
B58066021
B58066022
B58066023
B58066024
B58066025
Item Number
B58066011
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