NLS OVERFLOW SEAT VALVE

Application

The NLS valve is an overflow pneumatically actuated single seat valve designed for the dairy and food-processing industries, beverage production, pharmaceutical and fine chemicals industries. It is widely used as a bypass valve for the positive displacement pumps, it is also used to protect the equipment in case of excessive pressure.

Operating principle

The spring pressure forces the valve to close, the pressure can be adjusted by a screw on the top of the valve.
When the configured pressure is exceeded, the valves opens.
The valve is provided with a pneumatic seat lift, it allows the CIP liquid pass through during the CIP process.

Design and features

Sanitary design according to the 3A specifications. 
360º adjustable body.
Compact design.
Pneumatic seat lift.
Pressure range: 0 - 6 bar.
Weld connections (standard).
Clamp facilitates assembly/disassembly of the internal parts.

Materials

Parts in contact with the product       AISI 316L
Other stainless steel parts                   AISI 304
Gaskets                                        EPDM according to FDA 177.2600
Internal surface finish                           Ra ≤ 0,8 µm
External surface finish                          bright polish

Options

Steam barrier (if shaft sterilisation is required).
Jacketed body.
Spring: up to10 bar.
Various operation ranges (change of spring).
Internal surface finish: Ra ≤ 0,5 µm.
Gaskets: NBR or FPM.
Connections: DIN, Clamp, SMS, RJT, FIL-IDF, etc.

 CERTIFICATE           

Data sheet	ESENFRITDERUPL
Instructions manual	ESENFRITDERUPL