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© 2015 Flowrox Oy. All rights reserved.
Contents are subject to change without notice.
SKW/ SKF-2015-09-ENG
6.1.3
Lubrication
Do not use hydrocarbon based grease. Use silicone
based lubricants such as DOW# 111, DOW 4, DOW 44,
GENERAL ELECTRIC COMPOUND G661, AND RHONE -
POULENE RHODORSIL III
Flowrox gate valves have grease nipples on both sides of the valve body (Figure 12). Valves
are lubricated when assembled - therefore first lubrication should not be required unless the
valves have been in stock for a longer time. For dry material handling, lubrication might be
limited or forbidden.
Hydrocarbon based greases cannot be used to lubricate these valves as the elastomer ring
sleeves will swell and disintegrate.
Lubricate both sides of the valve approximately every 50 cycles, or after long periods of
infrequent cycling. Grease volume requirement is shown in Table 10. Please notice that even
when the lubricant is inert it may disturb a sensitive process. Acceptable lubricants include:
DOW# 111, DOW 4, DOW 44, GENERAL ELECTRIC COMPOUND G661 AND RHONE - POULENE
RHODORSIL III.
1.
Valve body
2.
Gate
3.
Tower
5.
Tower mounting bolt
6.
Tower mounting washer
7.
Secondary seal
8.
Grease nipple
Figure 12. Grease nipples on valve body.
Table 10.Volume of grease required per unit.
Valve nominal size
DN
50
DN
80
DN
100
DN
150
DN
200
DN
250
DN
300
DN
350
DN
400
DN
450
DN
500
DN
600
Lubricant per valve
(cm
3
)
35
40
60
65
105
240
480
490
550
620 1090 1470
WARNING
