LKB Automatic or Manual Butterfly Valve0 pages

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ky Manual or Automatic - it’s your Choice
LKB Automatic or Manual Butterfly Valve
Concept
LKB is a sanitary automatically or manually operated butterfly valve for
use in stainless steel pipe systems.
Working principle
LKB is either remote-controlled by means of an actuator or manually
operated by means of a handle.
The actuator is made in three standard versions, normally closed (NC),
normally open (NO) and air/air activated (A/A).
The actuator is designed so that an axial movement of a piston is
transformed into a 90° rotation of a shaft. The torque of the actuator is
increased when the valve disc contacts the seal ring of the butterfly
valve.
The handle for manual operation mechanically locks the valve in its
open or closed position. The handles for the valve sizes DN125 and
DN150, which are designed for locking in two intermediate positions,
enable adjusting of the valve, so that the flow rate can be regulated.

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TECHNICAL DATA

PHYSICAL DATA

Valve
Max. product pressure: . . . . . . . . . . 1000 kPa (10 bar).
Min. product pressure: . . . . . . . . . . Full vacuum.
Temperature range: . . . . . . . . . . . . . -10°C to +95°C.
max. temperature if valve
operates

Valve
Product wetted steel parts:
Other steel parts: . . . . . .
Rubber grades: . . . . . . .
Bushes for valve disc: . . .
Finish: . . . . . . . . . . . . .

Actuator
Max. air pressure: . . . . . . . . . . . . .
Min. air pressure, NC and NO: . . . .
Temperature range: . . . . . . . . . . . .
Air consumption (litres free air) - ø85
mm: . . . . . . . . . . . . . . . . . . . . .
Air consumption (litres free air) - ø133
mm: . . . . . . . . . . . . . . . . . . . . .
Weight: . . . . . . . . . . . . . . . . . . .

Actuator
Actuator body: . . . . . . . . . . . 1.4307 (304L).
Piston: . . . . . . . . . . . . . . . . Light alloy (for ø85 mm: Bronze).
Air/air version.
Seals: . . . . . . . . . . . . . . . . . Nitrile (NBR).

. 700 kPa (7 bar).
. 400 kPa (4 bar).
. -25°C to +90°C.
. 0.24 x p (bar).
. 0.95 x p (bar).
. - ø85 mm: 3 kg.
- ø133 mm: 12 kg.

O C T O B E R 2008

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. 1.4307 (304L) or 1.4404 (316L).
. 1.4307 (304L).
. Q, EPDM, FPM, HNBR or PFA.
. PVDF.
. Semi-bright.