Product Description
User Manual QT50 Doc ID 1321 version 2.0 Sept. 2018
Page 29 of 62
Mounting
The actuators provide fastening holes of different dimension to facilitate
mounting on different types of valves, see details in Figure 15: QT50 Valve
flange fastening holes on pages 32.
Information when an actuator/valve adaption is needed.
Note! Due to interference between holes for F04 and F05, the F04 flange has been
adjusted 45 degrees compared to F05 and F07. Please consider this when
planning, or plan for adapters to offset 45 degrees.
Note! It is important to verify the stem orientation before ordering. Changing the
orientation on the product after delivery are a delicate process not recommended
for non-Eltorque personnel. Figure 13 shows the difference between the two.
When the actuator and the valve do not have a natural match, it is necessary to
use an adapter. There are various adapters available, but the two most common
ones are the square reducer and the flange + stem adapter. For the QT50, the
majority of valves require an adapter plate. The required plate can be found in
table 10 below.
When buying actuator and valves together from Eltorque, this is handled by our
project personnel. If you order just the actuator take care to verify the critical
dimensions and whether the valve has parallel or standard configuration. Square
reducers might be necessary. The type of reducer to be used depends on the
valve type, please contact your Eltorque representative or Eltorque support for
further details.
Table 10 Adapter plate and screws
Valve stem height Adapter article
number
Typical length
of screws (1)
Flange
supported by
adapter
< 12mm NA 20-25mm F04/F05/F07
>12-15mm 55227 25-30mm F04/F05/F07
>15-19mm 55228 25-35mm F04/F05/F07
>19-25mm 55229 30-40mm F04/F05/F07
>25-30mm 55230 35-45mm F04/F05/F07
>30-34mm 55224 40-50mm F07
(1) Screw lengths must be confirmed by using correct valve flange height,
adapter thickness, washer and hole depth (figure 15).
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