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

Standard design LKB is available in three versions, LKB for ISO tubes, LKB-2 for DIN tubes and LKB-F for flange connection. The valve consists of two valve body halves, valve disc, bushes for the disc stem and seal ring. LKB-F also consists of two flanges and two flange seal rings. The valve is assembled by means of screws and nuts. Two actuator sizes, ø85 mm and ø133 mm, cover all valve sizes. The actuator is available in two versions, LKLA and LKLA-T. The actuator is fitted onto the valve by means of a bracket and screws. (The actuator can also be fitted onto ball valves by means of special...

Fig. 1. Lockable Multiposition Handle with padlock. 1. Padlock 1) Capacity/Pressure drop diagrams LKB and LKB-F fully open NOTE! For the diagrams the following applies: Medium: Water (20°C). Measurement: In accordance with VDI 2173. LKB-2 and LKB-F fully open

Torque diagrams - Actuator

Valve Dimensions (mm) Fig. 1. Dimensions - valve. A3 (LKLA-T) A4 (LKLA-T) A6 (LKLA) b. LKB with welding ends. c. LKB with male part/nut and liner. 150 are with six screws. Dimensions (mm) - Valve LKB, LKB -2, LKB -F: Size NOTE! Weights are for valves with welding ends and handles.

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