The N/M shut-off seat valve is a hygienic single seat pneumatically operated valve with a wide range of applications in the food-processing, pharmaceutical and fine chemicals industries.

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N/M Shut-off Seat Valve

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Operating principle

Seat valves are automatically operated by a single-acting or a double-acting actuator. Compressed air moves the shaft to place the valve in the "open" or "closed" position. The 180º rotation of the pneumatic cylinder of the single-acting actuators allows to have a normally open or normally closed valve.

Design and features

Compact and robust design.

Normally closed valve (NC) in the standard version.

The valve can be changed to normally open (NO) by simply reversing the position of the pneumatic actuator.

Weld connections (mm or inches).

Available sizes: from DN 25/1" to DN 100/4".

Easy disassembly of internal parts by loosening the clamp fastener.

Open lantern to allow visual inspection of shaft selaing.

360º adjustable body.

Materials

Parts in contact with the product: AISI 316L

Other St.St. parts: AISI 304

Gasket: EPDM according to FDA 177.2600

Internal surface finish: Ra ≤ 0,8 µm

External surface finish: mirror polished

Options

Double-acting pneumatic actuator.

Manual actuation.

Gaskets: FPM. All of them according to FDA 177.2600.

Connections: DIN, Clamp, SMS, RJT, FIL-IDF, etc.

"Twin-Stop" actuator.

C-TOP control unit.

External position sensors.

Steam barrier (if shaft sterilisation is required).

Jacketed body.

Surface finish: Ra ≤ 0,5 µm.