ERHARD NON SLAM, Руководство по эксплуатации

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Operating Instructions for ERHARD NON SLAM Nozzle Check Valve
2.1 Maintenance
ERHARD NON SLAM Nozzle Check Valves are maintenance-free.
Recommended intervals for inspection and maintenance:
Continuous 2 x per year Yearly
ERHARD NON SLAM Nozzle Check
Valve installed in plants
•
performance test (Open – Closed)
•
tightness test
•
head loss measurement
♦
♦
♦
Other checks
•
external leakage
•
damages
•
contamination / ease of operation
•
noise
♦
♦
♦
♦
2.2 Spare parts
When spare parts are required, it is necessary to specifiy the serial number of the valve.
The serial number is specified on the name plate (fig. 1.8). All data required for
selecting the appropriate spare parts are assigned to the serial number.
For 2 and 5 years‘operation wearing parts are not necessary.
The following spare parts for the ERHARD NON SLAM Nozzle Check Valve are defined
as wearing parts:
ERHARD NON SLAM Nozzle Check Valves DN 80 – 300:
1. Completely mounted unit (if necessary):
rubber-coated valve disc (1) with
guiding stem (2) and washer (5).
2. Spring (3)
(if necessary)
3. Bush (4) 2 pieces
Fig. 2.1
BA43E000
Juli 2009
Rev.9
ERHARD GmbH & Co. KG
x
D-89502 Heidenheim
x
Postfach 1280
Telefon: (07321) 320-0 (07321) 320 491 E-Mail: info @ erhard.de
Internet: http://www.erhard.de
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