Flowserve NAF-Setball ball sector valve - Manual (Page 2)

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4. Installation
Before installing the valve, ensure that the pipework is
free from impurities, that the pipe ends between which
the valve is to be installed are parallel and are correctly
aligned, and that the distance between the pipe ends
corresponds to the valve length, including gaskets. The
valve must not be used for drawing together or aligning
incorrectly run pipes as this will cause needless loads
on the valve and pipe which may lead to severe damages
during operation. See Fig. 3.
Wrong installation Correct installation
Fig. 3. Ensure that the pipe ends align and have the
correct distance
NAF-Setball valves should be installed in the direction
of flow which is shown by an arrow on the valve body.
We also recommend that the valve is mounted with
the stem pointing vertically upwards when the valve is
installed in a horizontal run of pipe.
The pipes should be supported on each side of the
valve in order to relieve the valve from loads and avoid
vibrations.
Locate the valve so that it will be easily accessible for
inspection and service, particularly if the valve is equipped
with a pneumatic actuator and valve positioner.
5. Flange Gaskets
Gaskets with sizes according to ANSI B16.5, Table E1
Figure E2, SS 359 or DIN 2690 are recommended.
6. Starting up
Before starting up, flush the pipework - with all valves
in the open position - so that any impurities that may
damage the sealing surfaces of the valve and impede its
operation will be flushed away.
7. List of Materials and Spare Parts
Item Qty Part Material Sealing type
1 1 Body EN1.4408/CF8M
2 1 Ball sector EN1.4408/CF8M hard
chrome plated
01, 02, 05, 06, 07
2 1 Ball sector EN1.4408/CF8M 11, 12, 15, 16, 17
3 1 Key Steel
4 1 Stem, lower EN1.4460
5 1 Gland cover EN1.4408/CF8M 01, 02, 05, 06, 11,
12, 15, 16
6 1 Bottom cover EN1.4408/CF8M
7 1 Gasket Graphite
8 1 Locking segment EN1.4436
9 1 Bearing seat EN1.4460
10 1 Compr ring EN1.4436
11 1 Seat ring Alloy 6 01, 02, 05, 06, 07,
0A, 0B
12A 1 Seat seal PTFE 01, 05, 07, 11, 15,
17, 1A, 1B
12B 1 Seat seal EPDM 02, 12
12C 1 Seat seal FPM 06, 16
13A 1 O-ring EPDM 01, 02, 11, 12
13B 1 O-ring FPM 05, 06, 15, 16
14 1 Backing ring PTFE 01, 02, 05, 06, 11,
12, 15, 16
15A 1 O-ring EPDM 01, 02, 11, 12
15B 1 O-ring FPM 05, 06, 15, 16
16 1 Gland cover EN1.4408/CF8M 07, 17,
17 2 Bolt A4 07, 17, 0A, 0B,
1A, 1B
18 2 Nut A4 07, 17, 0A, 0B,
1A, 1B
19A 1 Boxpacking
Zebra-CL™
V-ring PTFE 0A, 1A
19B 1 Boxpacking
Safeguard
V-ring PTFE
liveloaded
0B, 1B
19C 1 Boxpacking Graphite 07, 17
20 4 Bolt A4
21 2 Bolt A4 01, 02, 05, 06, 11,
12, 15, 16
22 1 Stem, upper EN1.4460
23 1 Indicating pin SS
24 1 Cup spring EN1.4310 0B, 1B
26 1 Washer A4
27 1 Thread insert Stainless
28 1 Bolt A4
29 1 Seat ring / Back-up
ring
PTFE/SS 11, 12, 15, 16, 17
30 1 Stem bearing Metaloplast
31 1 Stem bearing Metaloplast
32 1 Washer A4
33 1 Cylindrical pin EN1.4460
34 1 Washer Metaloplast
35 1 Keyway ring Stainless