1 7712 11 – Operated by heating controller for continuous or 2-point/3-point control. Selection of linear or equal percentage characteristic graph. Two-part body of self-extinguishing plastic. Bracket of plastic and union nut of brass for valve attachment. Operating direction switchable directly on the cable, automatic adaption tot he valve stroke. Coding switch for selection oft he characteristic graph and operating time. Disengageable gearbox for positioning of the valve and manual adjustment. Installation vertical to horizontal, non-suspended.
1 7712 50, 1 7712 51 - Operated by heating controller for 2-point/3-point control. Two-part body of self-extinguishing plastic. Bracket of plastic and union nut of brass for valve attachment. Disengageable gearbox for positioning of the valve and manual adjustment. Installation vertical to horizontal, non-suspended.