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MARK 3 USER INSTRUCTIONS ENGLISH 71569102 08-06
Page 17 of 68 flowserve.com
Figure 3-6: Suction pressure reference numbers
Pump size 1 750 3 500
1K 1.5x1-6 7 10
1K 3x1.5-6 10 15
1K 3x2-6 10 12
1K 2 x1.5V-6
PT
18
1K 1.5x1-8
1K 1.5x1.5US-8
7 6
1K 2x1.5V-8
PT
16
1K 3x1.5-8 4 4
1K 3x2V-7
PT
11
2K 3x2-8 10 7
2K 4x3-8 10 13
2K 2x1-10A 8 3
2K 2x1.5V-10A
2K 2x1.5US-10A
8 3
2K 3x1.5-10A 10 17
2K 3x2-10A
2K 3x2V-10
In-Line
10
11
14
9
2K 4x3-10 6 2
2K 4x3-10H 3
na
2K 6x4-10 5 8
2K 6x4-10H 10
na
2K 3x1.5-13 9 5
2K 3x2-13 5 1
2K 4x3-13/13 1
na
2K 4x3-13/12 1
na
2K 4x3-13/11 max 1 2
2K 4x3-13HH 10
na
2K 6x4-13A 1
na
2K 6x4-13A/10.25 1
?
3K 8x6-14A 2
na
3K 10x8-14
PT na
3K 6x4-16
PT na
3K 8x6-16A
PT na
3K 10x8-16 & 16H
PT na
3K 10x8-17 3
na
Recessed impellers
PT PT
Lo-Flo pumps
PT PT
Open impellers
PT PT
Notes:
1. Self-Primer and In-Line pumps not specifically listed above
are to use the standard pump ratings given.
For example: 2K 3x2V-13 and 2K 3x2US-13 pumps utilize the
standard 2K 3x2-13 ratings.
2. P-T: Only limited by Pressure-Temperature ratings.
3. Open impeller pumps including the Lo-Flo and Recessed
Impeller products are limited in suction pressure only by the
Pressure-Temperature ratings.
4. Sealmatic pump suction pressure is limited by the repeller.
Figure 3-7: Minimum continuous flow
MCF % of BEP
Pump size
3 500/2 900
r/min
1 750/1 450
r/min
1 180/960
r/min
1K3x2-6 20% 10% 10%
1K3x2-7 25% 10% 10%
2K3x2-8 20% 10% 10%
2K4x3-8 20% 10% 10%
2K3x2-10 30% 10% 10%
2K4x3-10 30% 10% 10%
2K6x4-10 40% 10% 10%
2K6x4-10H n.a. 20% 10%
2K3x1.5-13 30% 10% 10%
2K3x2-13 40% 10% 10%
2K4x3-13 40% 20% 10%
2K4x3-13HH n.a. 50% 30%
2K6x4-13 60% 40% 10%
3K8x6-14 n.a. 40% 15%
3K10x8-14 n.a. 40% 10%
3K6x4-16 n.a. 50% 10%
3K8x6-16 n.a. 50% 10%
3K10x8-16 n.a. 50% 10%
3K10x8-17 n.a. 50% 10%
All other sizes 10% 10% 10%
Figure 3-8: Minimum submergence
Figure 3-9: Minimum submergence