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Type series booklet 8505.13/3--10 MA series manual actuators Hypocycloïdal gear train kinematics Output torques up to 250 Nm This document defines the MA series manual actuators designed for the operation of ¼ turn valves by mounting plate ISO 5211. Applications: Building, General circuits for Industry. General features The range ofMA seriesmanual actuators developed andmanufactured by KSB--AMRI covers output torque values up to 250 Nm. The MA series actuators, with hypocycloïdal gear train kinematics, have been specially designed for the operation of centred disc butterfly valves mainly used in the H.V.A.C industry. Mounting plate according to ISO 5211 standard. Equipped with an interchangeable insert, they can be easily fitted on different valve shaft end (square end, flat end, key,..). These actuators are supplied with a handwheel and a visual pointer. Factory lubricated, they do not need any maintenance. Protection : They are hose and fine dust proof (protection degree: IP 65). External coating : Polyurethane paint (colour black RAL 9011, 80 © thickness). Working temperature range : From --20°C to +80° C. Production range Maximum Maximum Number Maximal allowable dimensions for the shaft Type output input of turn ISO 5211 Driving Driving Driving torque torque Handwheel mounting plate* hauteur by square by Flat by key (Nm) (Nm) MA 12 125 23 8 F04, F05 25 17 17 18 MA 25 250 40 8 F07, F10 30 22 22 28 * Direct adaptation onto identical mounting plate. Adaptation by intermediate flange onto different plate (different size or shape).

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MA series manual actuators 2 MA 12 actuator Construction Item Designation Materials 103 Gear casing Zinc--Aluminium alloy 165 Bonnet Zinc--Aluminium alloy 412.1 O--ring Nitrile 412.2 O--ring Nitrile 412.3 O--ring Nitrile 626 Transparent cap Polycarbonate 629 Pointer Polypropylene 87 -- 12 Satellite gear Steel 881 Eccentric shaft Phosphated steel 88 -- 3 Leading unit Zinc--Aluminium alloy 900 Self cutting screw Zinc coated steel 901 Hexagon head screw Zinc coated steel 920 Hexagon nut Zinc coated steel 961 Handwheel Zinc--Aluminium alloy 970 Identity plate Adhesive polyester coated Overall...

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MA series manual actuators 3 MA 25 actuator Construction Item Designation Materials 103 Gear casing Zinc--aluminium alloy 165 Bonnet Zinc--aluminium alloy 412.1 O--ring Nitrile 412.2 O--ring Nitrile 412.3 O--ring Nitrile 412.4 O--ring Nitrile 554.1 Plain washer Zinc coated steel 554.2 Spring washer Zinc coated steel 59--40 Chuck Zinc alloy 626 Transparent cap Polycarbonate 629 Pointer Polypropylene 87 -- 12 Satellite gear Steel 881 Eccentric shaft Treated steel 88 -- 3 Leading unit Zinc--aluminium alloy and steel 900 Self cutting screw Zinc coated steel 916 Plug Nitrile 932.1 Spring...

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KSB S.A.S. 4, allée des Barbanniers . 92635 Gennevilliers Cedex (France) Tel.: +33 1 41 47 75 00 . Fax: +33 1 41 47 75 10 . www.ksb.com MA series manual actuators Options . Locking by chain The MA series actuators can be supplied with a locking by chain (padlock not supplied by AMRI). . Limit switch indication The MA series actuators can be equipped with an electric limit switchbox. This switchbox is fitted between the valve mounting plate and the actuator and can house upto two switches (one switch on open position, one switch on closed position or one switch on open and closed positions)....

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