Brochure
Catalog OEM-1, Couplings / Page 9
Assembly Instructions
Step 1
After tubing or hose has been con-
nected to adapters** (1) and (12), install
adapter O-rings (2) and (11)* on adapt-
ers. Be sure O-rings are not twisted.
Step 2
Generously lubricate adapter O-rings (2)
and (11) with the system lubricant to pre-
vent them from scufng and tearing when
coupling body is threaded on adapter.
Step 3
Adapter to S2 male coupling half con-
nection.
A. Lubricate poppet face with system lubri-
cant. Insert poppet valve assembly (3) into
body (4). Tighten body (4) on adapter (1).
B. After body and adapter make metal-to-
metal contact, torque to the value shown
in the “Torque Values” table.
Step 4
Adapter to S5 female coupling half con-
nection.
A. Lubricate O-ring (9) liberally with system
lubricant. Insert valve and sleeve assem-
bly (10) into body (8). Tighten body (8) on
adapter (12).
B. After body and adapter make metal-to-
metal contact, torque to the value shown
in the “Torque Values” table.
Step 5
Coupling connection.
A. Generously lubricate the gasket seal (5)
on the 5400-S2 male coupling half with
the system lubricant.
B. Thread the union nut (8) onto the S2 male
coupling half. Tighten union nut to torque
values shown in the “Torque Values”
table.
IMPORTANT - DO NOT
rotate the S5 female
coupling half body during connection.
C. After the coupling halves are seated, keep
the bodies of the S2 male coupling half (4)
and that of the S5 female coupling half (8)
from rotating and tighten the union nut to
the torque values shown in the “Torque
Values” table.
IMPORTANT - DO NOT
rotate the S2 or S5
coupling half body during connection.
Bulkhead Mounting — S2 Half
Install lock washer (6) on S2 half, insert
S2 male coupling half through bulkhead,
and tighten jam-nut (7) so that lock-
washer teeth are fully compressed.
Note: Lock washer (6) must be between
hex of S2 male half and bulkhead.
IMPORTANT - Generous lubrication is
required for all gaskets and O-rings.
Lubrication should match system oil and
be compatible with refrigerant system.
* Specify O.D. Tubing size of adapter required in
16th of an inch.
Example: -4 coupling with 3/8” O.D. tubing =
6/16 or -6. Part number is then 202208-6-4B.
** Contact Parker Sales for alternative adapter
sizes or connections.
Jam Nut
Lock Washer
Adapter SAE 37° (JIC)
Adapter — Braze
Accessories
O-Ring
Required
T1 Thread
T2 Thread
Coupling
Size
Jam Nut
A B T Thread
-4 0.25 3/4 5/8-18 UNF-2B
-8 0.25 1 3/16 1-20 UNEF-2B
-12 0.31 1 9/16 1 7/16-16 UN-2B
-16 0.31 2 1 3/4-16 UN-2B
Coupling
Size
Lock Washer
T ID OD
-4 0.045 0.645 1.052
-8 0.063 1.020 1.625
-12 0.055 1.520 2.500
-16 0.055 1.770 2.625
Coupling
Size
Part Numbers
Thread
Size
T1
Thread
Size
T2
Tube
O.D.
Size
Inches
O-Ring Brass Steel
-4 22546-12 202220-6-4B 202220-6-4S 1/2-20 UNF
9/16-18 UNF
3/8
-8 RA0486-17 202220-6-8S 7/8-20 UNEF
9/16-18 UNF
3/8
-8 RA0486-17 202220-8-8S 7/8-20 UNEF
3/4-16 UNF
1/2
-12 22546-23 202220-10-12S 1 1/4-18 UNEF
7/8-14 UNF
5/8
-12 22546-23 202220-12-12S 1 1/4-18 UNEF
1 1/16-12 UN
3/4
-16 22546-28 202220-16-16S 1 19/32-20 UNS
1 5/16-12 UN
1
Coupling
Size
Part Numbers
Thread Size
T1
Tube O.D.
Size - Inches
O-Ring Brass
-4 22546-12 202208-4-4B 1/2-20 UNF 1/4
-4 22546-12 202208-5-4B 1/2-20 UNF 5/16
-4 22546-12 202208-6-4B 1/2-20 UNF 3/8
-8 RA0486-17 202208-6-8B 7/8-20 UNEF 3/8
-8 RA0486-17 202208-8-8B 7/8-20 UNEF 1/2
-12 22546-23 202208-10-12B 1 1/4-18 UNEF 5/8
-12 22546-23 202208-12-12B 1 1/4-18 UNEF 3/4
-12 22546-23 202208-14-12B 1 1/4-18 UNEF 7/8
-16 RA0486-28 202208-14-16B 1 19/32-20 UNS 7/8
-16 22546-28 202208-16-16B 1 19/32-20 UNS 1
-16 22546-28 202208-18-16B 1 19/32-20 UNS 1 1/8
-16 22546-28 202208-22-16B 1 19/32-20 UNS 1 3/8
O-Ring
Required
T1
Thread
A
B
Hex Stock
T
OD
ID
T