Repair Kits And Spare Parts - Hawido 1401 Instruction

Functional check of the one-way flow restrictor
•
Undo the locknut
•
Screw in the throttle screw, and then unscrew it as far as it goes
•
Screw in again a few turns. This process must be easy and meet little resistance
Checking the valve
•
Remove the optical position indicator or plug on the valve cover.
•
Check that the valve spindle moves easily by raising and lowering it with the threaded rod.
Special attention must be paid to this test procedure, above all with valves with modified counter
seats.
•
Assemble optical position indicator or plug.
Putting back into service
•
according to Commissioning paragraph
Functional check of the valve
Caution: In order to avoid pressure surges in the functional check described below, large flow rates must be
throttled by slowly closing the gate valve in front of the valve.
•
Slowly close the ball valve (2C); the valve must close.
•
Slowly open the ball valve (2C); the valve must open.
3.

Repair kits and spare parts

Several replacement parts are required for the 4 or 5 - year service. These can be obtained as a repair kit
for:
•
the main valve
•
the control valve
•
the control line
•
the optical position indicator
The article numbers can be found in the part lists and the lists of spare parts.
Caution:
When ordering replacement parts, always specify the valve type, serial number and year of construction!
Important:
Replacement parts made of EPDM (diaphragms, seals) and NBR (O-rings) must be stored in a dark place,
protected from UV radiation!
Shelf-life when stored in the dark:
EPDM 8 years from date of manufacture
NBR 5 years from date of manufacture
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