Product Data Sheet
Edition 2
May 2009
Non-Return Valve - NRV
Each measurement line can be fitted with a
non-return valve to avoid backflow from tanks
due to mounting position of the cabinet, or if the
instrument air is lost. Thus the non-return valve
prevents liquid from the tank to enter the measuring lines.
The non-return valve is available in three mounting options and two different materials, see table
for details.
Mounting options:
• Internal (Female thread)
• External (Male thread)
• Flange (DIN and JIS)
Material:
• Stainless steel
• Aluminium (anodised black)
The non-return valve is to be installed with the
housing in a vertical position.
The non-return valve uses British Standard Pipe
thread (BSP) for interconnecting and sealing
pipes.
The NRV can be used on all LevelDatic products.
LevelDatic
www.EmersonProcess.com/mtm
LevelDatic
Product Data Sheet
Edition 2
May 2009
Technical Specification:
Type
External thread
Internal thread
Flange
Body Material
ANSI 316 or Aluminum
ANSI 316 or Aluminum
ANSI 316L
Tank connection 1)
BSP 3/4 (Male)
BSP 3/4 (Female)
DN40, PN10 (DIN 2501)
JIS 5K-25A
JIS 10K-80A
(JIS B 2238)
Other connections on request
Pipe connection
BSP 1/4
BSP 1/4
BSP 1/4
Float material
Polypropylene
Polypropylene
Polypropylene
Seal meterial
Viton
Viton
Viton
Dimension
Ø58 x 145 mm
Ø58 x 120 mm
Ø58 x 110 mm + flange
Overpressure
10 bar
10 bar
10 bar
Operating temperature
- 25…+ 100 °C
- 25…+ 100 °C
- 25…+ 100 °C
Storage temperature
- 25…+ 100 °C
- 25…+ 100 °C
- 25…+ 100 °C
1)
Model code: NRV - Material - Type E.g. NRV-S-O
Material: S - Stainless steel, A - Aluminum
Type: I - Internal thread, O - External thread, F - Flange, F90 - Flange with 90° bend
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guarantees, expressed or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of our products at any time without notice. Emerson
Process Management accepts no responsibility for any errors that may appear in this publication.
This product is developed and managed by:
Emerson Process Management
Marine Tank Management
SF-Control OY
Valimotie 13B
FI-00380 Helsinki, Finland
T +358 9 756 234 10
F +358 9 757 2778
© 2009 SF-Control Oy
For global contacts:
www.EmersonProcess.com/mtm