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Parker Hannifin Corporation
Pneumatic Division
Richland, Michigan
www.parker.com/pneumatics
M21
M
“N” Series Valves
Internal Return - 3/8", 3/4", 1-1/4" Basic Body
Catalog 0600P-10/USA
Dimensions - Remote Operated
Key
3/8" Body 3/4" Body 1-1/4" Body
Inch mm Inch mm Inch mm
H
3.19 81 3.75 95 5.34 136
J
1.88 48 2.44 62 3.44 87
K
.50 13 .50 13 .50 13
L
.11 3 .16 4 .25 6
M
1.44 37 1.78 45 2.66 67
N
4.22 107 5.31 135 7.19 183
P
4.78 121 5.56 141 7.53 191
Q
2.31 59 3.09 78 4.56 116
Key 3/8" Valve 3/4" Valve 1-1/4" Valve Description
5 K493 002 K493 009 K493 016 Stem
6 K202 001 K202 002 K313 028
Lower Piston
Assy.
7* H145 09 H136 76 H137 28 Seal
8 H178 11 H178 13 H178 17 Washer (2)
9 H063 26 H063 32 H063 38 Stop Nut (2)
10 K092 020 K092 034 K103 061
Bottom Cap
(N.C.)
10A K103 035 K103 053 K092 046
Bottom Cap
(N.O.)
11* K183 049 K183 057 K183 058 Gasket
12 K473 014 K473 015 K473 016 Spring
14* K41RB72121 K41RB72221 K41RB72143 O-Ring
21 K123 018 K123 021 K123 024 Cover
* Parts included in seal kit
Key 3/8" Valve 3/4" Valve 1-1/4" Valve Description
1
—
1/2" Tap
K053 075
1" Tap
K053 111
Body (N.O.)
3/8" Tap
K053 022
3/4" Tap
K053 076
1-1/4" Tap
K053 112
1/2" Tap
K053 023
1" Tap
K053 220
1-1/2" Tap
K053 113
1A
—
1/2" Tap
K053 077
1" Tap
K053 114
Body (N.C.)
3/8" Tap
K053 025
3/4" Tap
K053 078
1-1/4" Tap
K053 115
1/2" Tap
K053 026
1" Tap
K053 218
1-1/2" Tap
K053 116
2 K212 001 K212 002 K313 029 Upper Piston Assy
3* H136 48 H137 28 H137 52 Seal
4* H145 10 H136 76 H137 28 Seal
EXH
NP
M
J
H
K Travel
L
H100-59
H175-12
H100-59
H175-12
1/4 NPT
1/4 NPT
G
A
F
B
E
C
D
On 2-Way Valve This
Port Is Plugged
11*
2
1
6
8
9
12
12
21
3*
4*
5
7*
14
10A
11*
2
6
8
9
21
3*
4*
5
1A
7*
10
EXH
CYL.
IN
CYL.
IN
P
L
N
Q
J
H
K Travel
G
A
F
B
E
C
D
On 2-Way Valve This
Port Is Plugged
Service Kits
Include all parts normally required for
in-service maintenance:
3/8" Basic Valve .......................K352 073
3/4" Basic Valve .......................K352 074
1-1/4" Basic Valve ....................K352 075
Normally Closed
Normally Open
Top view indicates flow through 3-Way
valve.
NOTE: For normal valve operation, override
must be in “out” position.
Exhaust
Pressure
Dimensions