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Nordstrom Multiport Plug Valves
Experience In Motion
Nordstrom Multiport Plug Valves 
Contents
Glossary of Terms Used on Valve Dimension Tables
3
Dimension Units
3
About This Catalog
3
Valve Figure Number Explanation
3
Valve Figure Number Index
4
Valve Working Pressure Index
5
Advantages of Multiport Design
6
Port and Stop Arrangements
8
Dimension Tables
10-17
Nordstrom Iron Screwed Gland-Type Multiport Plug Valves
10
Nordstrom Iron Bolted Gland-Type Multiport Plug Valves
11
Super Nordstrom Steel Multiport Plug Valves
13
Dynamic Balance Steel Multiport Plug Valves
14
Super Nordstrom Steel Multiport Plug Valves
15
Dynamic Balance Steel Multiport Plug Valves
16
Dynamic Balance Steel Multiport Plug Valves
17
Conformance to Standard Specifications
18
Sealant Fittings
18
Gearing
19
Actuators
19
Wrenches
20
Square Adapters
21
Locking Devices
21
For Wrench-Operated Valves
21
For Nordstrom Bolted Gland-Type Multiport Valves
21
For Dynamic Balance and Super Nordstrom Multiport Valves
21
Dynamic Balance Standard Design Categories
22
NACE Construction Valves for Sour Gas Applications
22
Dynamic Balance Multiport Plug Valve Metals
23
Test and Working Pressures (psig minimum)
23
Test Times
23
Operating Temperatures
24
Temperature Ratings
24
Typical Materials of Construction
25
Dynamic Balance Valve Typical Materials of Construction
26
Size 4 and Smaller Multiport Valves
26
Size 6 and Larger Multiport Valves
27 flowserve.com

Glossary of Terms Used
on Valve Dimension Tables
CWP (Cold Working Pressure) is the maximum service
pressure permitted in the ambient temperature range -20°F
to 100°F (-29°C to 38°C). CWP is expressed in psig (pounds
per square inch gage).
DN (Diameter Nominale) is an indication of nominal diameter.
Test is the Hydrostatic Shell Test Pressure. (See Test and
Working Pressures chart.)
Dimension Units
NOTE: In all dimension tables, upper dimensions and
weights are in inches and pounds. Lower dimensions and
weights are in millimeters and kilograms.
About This Catalog
Every attempt has been made to assure that the data
in this catalog is as accurate as possible. Flowserve
Nordstrom Valves reserves the right to make
product modifications that contradict the contents
of this catalog without notification to the holders of
this catalog; therefore, Flowserve Nordstrom Valves
cannot be held responsible for any data found to be
inaccurate or incomplete.
Valve Figure Number Explanation
Valve figure numbers ending in a 2, 3, 4 or 5 indi-
cate wrench-operated valves. Valve figure numbers
ending in a 2 or 4 indicate threaded ends. Valve
figure numbers ending in a 5 indicate flanged ends.
Valve figure numbers ending in a 9 indicate flanged
ends with worm gear operator. 
Nordstrom Iron Valve
Figure Number
Page
3402
10
3403
10
3412
10
3413
10
3422
10
3423
10
3464
11
3465
11
3469
12
3474
11
3475
11
3479
12
3484
11
3485
11
3489
12
Super Nordstrom Steel Valve
Figure Number
Page
3803
13
3813
13
3823
13
4802
15
4803
15
4812
15
4813
15
4822
15
4823
15
Dynamic Balance Valve
Figure Number
Page
5105
14
5109
14
5115
14
5119
14
5125
14
5129
14
5205
16
5209
16
5215
16
5219
16
5225
16
5229
16
6405
17
6415
17
6804
17
6814
17
6824
17
Valve Figure Number Index flowserve.com

Valve Working Pressure Index
Pressure Rating
Type of Operation
Nominal Size
Page
Nordstrom Valves Iron
200 CWP (13.8 bar)
Wrench
121/2 (DN 2565)
10
Wrench
36 (DN 80150)
11
Worm Gear
612 (DN 150300)
12
400 CWP (27.6 bar)
Wrench
1/221/2 (DN 1565)
10
Super Nordstrom Valves Steel
ANSI Class 150 (PN 20)
Wrench
11/2 & 2 (DN 40 & 50)
13
ANSI Class 300 (PN 50)
Wrench
1/22 (DN 1550)
15
Dynamic Balance Valves Steel
ANSI Class 150 (PN 20)
Wrench
3 & 4 (DN 80 & 100)
14
ANSI Class 150 (PN 20)
Worm Gear
610 (DN 150250)
14
ANSI Class 300 (PN 50)
Wrench
3 & 4 (DN 80 & 100)
16
ANSI Class 300 (PN 50)
Worm Gear
610 (DN 150250)
16
ANSI Class 600 (PN 100)
Wrench
24 (DN 50100)
17
ANSI Class 1500 (PN 250)
Wrench
1 & 2 (DN 25 & 50)
17
c
WARNING: Numerous products described in this catalog and manufactured before January 1, 1986
were equipped with packings and/or gaskets that contained asbestos. When servicing, disassembling or
disposing of these products, avoid breathing the asbestos fibers or dust. 
Flowserve Nordstrom multiport valves incorporate
the established principles of Nordstrom design and
quality and are particularly efficient, compared to non-
lubricated multiport valves, because of the provision of
sealant grooves to prevent leakage between ports.
Use of multiport valves is advantageous in many
installations, providing simplification of piping and
convenience in operation. One 3-way or 4-way
Nordstrom multiport valve may be used in place of two,
three or four straightway valves, and in most cases will
also eliminate other fittings such as tees and elbows.
A further advantage in the use of multiport valves is
that, where necessary, ports and stops can be arranged
to permit the required operating connections, at the
same time making it impossible for the valve to be
turned to positions that would produce undesirable
results, such as waste, overpressure on equipment,
wrong mixtures, etc.
Advantages of Multiport Design
Regular Multiport Valves
Nordstrom 3-way, 2-port; 3-way, 3-port; and 4-way
multiport valves have ports arranged so that when
the plug is turned from one position to another, the
channels previously in connection will be entirely
closed before new channels begin to openthereby
preventing mixture of fluids or loss of pressure.
-Way, -Port
L
R
C

-Way, -Port
L
R
C

-Way
L
R
SUPPLY
EXHAUST flowserve.com

Positive and Negative Shutoff
Multiport valves are built to the same standards of quality
and strength as the corresponding straightway valves.
However, multiport valves can be expected to provide
shutoff against full rated working pressure only in the
positive direction (i.e., with the line pressure acting to hold
the plug against the body port or ports, which are to be
isolated from the higher pressure, as illustrated by Figures 1
and 2). In Figure 1, the flow is from the right-hand to center
connection, and the left-hand connection is closed. In
Figure 2 the flow is from the left-hand to right-hand connec-
tion, or vice versa, and the center connection is closed. In
both cases the pressure inside of the valve is trying to get
out and tends to force the plug against the port that is to
be cut off, which, together with the sealant provided by the
Nordstrom sealant system, effects a shutoff at this point.
NOTE: Refer to MSS SP-61 Pressure Testing of Steel
Valves for allowable leakage rates for multiport valves.
Multiport valves are not expected to shut off high
differential pressures when the line pressure is in
a negative direction, as illustrated in Figures 3 and
4. In these examples, the pressure is from the left-
hand and center connections, respectively, and in
both cases, pressure is trying to get into the valve.
Under these conditions the pressure can force the
plug away from the inlet port, bypass the plug and
escape at the connections, which are supposed to
be isolated from the higher pressure.
The 4-way valves are intended to be used for direc-
tional control only, and cannot be expected to hold
high differential pressure without some leakage.

Positive Shutoff
Figure 1
Figure 2
C
R
L
C
R
L
Pressure
NOTE: When multiport valves are used in vacuum service,
the positive and negative effects are reversed.
Negative Shutoff
Figure 3
Figure 4
C
R
Pressure
C
R
L
Pressure 
Port and Stop Arrangements
When ordering multiport valves, specify the size, figure number and the port and stop arrangement.
L
R
C
L
R
C
Position 1
Position 2
Arrangement 1: 3-way, 2-port,
90° Turn Two Positions
L
R
SUPPLY
EXHAUST
L
R
SUPPLY
EXHAUST
Position 1
Position 2
Arrangement 2: 4-way, 4-port,
90° Turn Two Positions
L
R
C
Position 1
Position 2
Arrangement 3: 3-way, 3-port,
90° Turn Two Positions
L
R
C
L
R
C
L
R
C
Position 1
Position 2
Arrangement 4: 3-way, 3-port,
90° Turn Two Positions
L
R
C
L
R
C
L
R
C
Position 1
Position 2
Arrangement 6: 3-way, 3-port,
90° Turn Two Positions
L
R
C
Position 1
Position 2
Arrangement 5: 3-way, 3-port,
90° Turn Two Positions
L
R
C
L
R
C
L
R
C
Position 1
Position 2
Position 3
Arrangement 7: 3-way, 3-port,
180° Turn Three Positions
L
R
C
L
R
C
L
R
C
Position 1
Position 2
Position 3
Arrangement 8: 3-way, 3-port,
180° Turn Three Positions