Product description
Function description
9
© Lutz-Jesco GmbH 2017
Subject to technical changes.
170518
BA-20710-02-V05
Chlorine control valve
C 7700
Operating instructions
4 Product description
4.1 Scope of delivery
Please compare the delivery note with the scope of delivery. The
following items are part of the scope of delivery:
n
Valve with servomotor
n
Wall panel and installation material (optional)
n
Operating instructions
The regulation valve C 7700 is often supplied as a module together with
the flow meter. The flow meter is described in a separate document.
4.2 Design
4.2.1 Structure of the device
Fig. 1: Structure of the device
Item
Description
1
Hand knob (in the picture without protective cap)
2
Servo motor
3
Input
4
Output
Table 5: General Overview
4.3 Function description
Fig. 2: Functions of the device
The servomotor with a regulation bevel of 90° moves the regulator
eccentric (5). It converts the rotation movement into the stroke movement
of the valve spindle (4). A spring (3) pushes the valve spindle onto the
eccentric.
The actual regulating element is located at the lower end of the valve
spindle. Up to 2500 g Cl
2
/h can be achieved with a slotted nozzle (7) – a
shaft with a diagonal "U" shaped slot. A control cone is used for greater
capacity (6).
Both regulating elements are shaped in such a way that the flow
cross-section changes proportionally to the angle of rotation of the
eccentric. The valves have a linear steady state characteristic.
For manual dosing, it is possible to push the valve spindle on the hand
knob (1) to the top position and lock it in place with the slide lock (2). The
dosing is then set from the manual valve of the flow meter.
The housing of the regulation valve consists of two chambers, the
eccentric chamber (A) and the valve chamber (B). The medium is only
present in the valve chamber.
1
3
2
4
1
2
3
4
5
6
7
A
B
