Check valves – product lines
All NEOPERL® check valve cartridges have been designed for use
with drinking water. Neoperl only uses appropriately approved and
certified materials. The product range includes numerous different
sizes (7 to 50 mm), which comply with the requirements of all
pertinent product standards (EN 13959 and ASME A112.18.3). They
have become firmly established in many different applications
worldwide thanks to their exceptional reliability and long service
life. Apart from the classical product lines, such as the DW and CV
models, Neoperl also develops innovative cartridges with additional
features, such as flow control, pressure compensation or temperature resistance.
DW/CV Line
DW 15-PR
Type of construction: closed body
Bore diameter: 10 – 20 mm
Installation: in or against the direction of flow
Type of construction: closed body
Bore diameter: 15 mm
Installation: in or against the direction of flow
Special feature: relieves any backpressure in excess of 20.5 ± 4.5
bar quickly and reliably while still complying with EN13959
Scope of application: thermostatic faucets; particularly suitable
for installations with thermal disinfection
OV Line
NV Line
Type of construction: open cage, with snap-fit tabs
Bore diameter: 10 – 50 mm
Installation: preferably against the direction of flow
Special feature: low pressure loss and low noise development
Type of construction: open cage, with snap-fit tabs
Bore diameter: 15 – 50 mm
Installation: against the direction of flow
Special feature: particularly suitable for applications where a
cross bore impedes installation (the o-ring is mounted first)
OF Line
OF / OV / NV 20-PR
Type of construction: open cage, without snap-fit tabs
Bore diameter: 7 – 20 mm
Installation: in or against the direction of flow
Special feature: low pressure loss and low noise development;
easy installation
Type of construction: open cage, without snap-fit tabs (OV and NV with)
Bore diameter: 20 mm
Installation: in or against the direction of flow
Special feature: relieves any backpressure in excess of 20.5
± 4.5 bar quickly and reliably while still complying with EN13959; very
low pressure loss
Scope of application: thermostatic faucets; particularly suitable for
installations with thermal disinfection
40 | Check valves