A
B
C
D
E
H
W
K
J
V
G
S
T
N
P Q R
L
M
F
U
Y
X
Service Instructions
Disassembly
1. Shut off air supply and depressurize the unit.
2. Disengage the adjusting knob (A) by pulling outward. Turn adjusting
knob (A) counterclockwise until the compression is released from
the pressure control spring (V).
3. Using a small pipe wrench, turn nipple (D) counterclockwise and
remove along with coupling (C) and gauge (B). Remove elbow (E).
H3 & F7 Sandwich Regulator
V-486BP
4. Unscrew the collar (F) and remove the bonnet assembly (G).
5. Remove (3) M6 X 40MM LG. socket head cap screws (H) and (1)
M6 X 20MM LG. socket head cap screw (J). Remove regulator
and gasket (K) to interface block.
6. Unscrew poppet retainer (L). Remove and discard spring (M) and
poppet assembly (N).
7. Remove seal retainer (P) using a T15 Torx driver. Remove and
discard vee packing (Q) and backflow retainer (R).
8. Remove retaining ring (S) from regulator body using needle nosed
pliers and discard. Remove and discard vee packing (T).
9. Remove and discard diaphragm assembly (U). Remove and retain
spring (V).
10. OPTIONAL: Remove retaining ring (W) using snap ring pliers.
Use a small hex key to pry plug (X) out of regulator body. Remove
and discard o-ring (Y).
NOTE: This step need not be performed unless leakage is
detected around retaining ring.
Cleaning And Lubrication
1. Clean all parts with warm water and soap. Dry thoroughly.
2. Inspect all parts.
3. Replace damaged parts.
4. Lubricate all o-rings and vee packings with Marfak MP-2* grease
(tube in kit).
Reassembly
1. OPTIONAL: Perform only if step 10 of disassembly was performed.
Apply lubricant around top of hole in top of regulator body.
Assemble o-ring (Y) to plug (W) and insert into regulator body.
Assemble retaining ring (W) into groove in regulator body using
snap ring pliers.
2. Insert vee packing (T) into regulator body with open end of vee
facing towards interior of regulator body. Press retaining ring (S)
into regulator body using a 7/16 diameter wooden dowel.
3. Assemble vee packing (Q) and backflow retainer (R) to seal
retainer (P). Vee on vee packing (Q) and flat side of backflow
retainer (R) should face the threaded end of the seal retainer (P).
4. Assemble the seal retainer (P) to the poppet retainer (L) using a
T15 Torx driver.
5. Apply a drop of low strength thread locker to poppet retainer.
Assemble poppet assembly (N), spring (M) and poppet retainer
(L) into regulator body. Poppet retainer (L) need only be hand
tight.
6. Place gasket (K) over end of regulator body lining up long slot in
gasket with outlet in regulator body.
Long slot in Gasket / Regulator outlet
7. Using (3) M6 X 40MM LG. Socket head cap screws (H) and (1)
M6 X 20MM LG. Socket head cap screw (J) assemble regulator
body and gasket (K) to interface block. Tighten 5.1 to 5.6 Nm (45
to 50 in-lb).
8. Place spring (V) and diaphragm assembly (U) into bonnet
assembly (G).
9. Assemble bonnet assembly (G) and collar (F) to regulator body.
Tighten collar hand tight plus 1/4 turn.
10. Apply pipe sealant to male threads of elbow (E) and assemble to
regulator body. Apply pipe sealant to male threads of nipple (D)
and screw into elbow (E).
11. Reapply pressure to unit and check for audible leakage at joints
or out bleed holes.
12. Adjust outlet pressure per Outlet Pressure Adjustment procedure
at top left of this page to verify proper function.
4
* Marfak MP-2 is a registered trademark of Texaco.
Replacement Parts
Item No.
Part Number
Description
1
•
Diaphragm Assembly
2
•
Retaining Ring
3
•
Vee Packing
4
•
Poppet Assembly
5
•
Vee Packing
6
•
Backflow Retainer
7
•
Poppet Spring
8
•
Gasket
9
•
O-Ring
10
P01698
1-30 PSI Spring
P04062
1-60 PSI Spring (Blue)
P04063
2-125 PSI Spring
11
K183119
Subbase Gasket - H3
11
K183135
Subbase Gasket - F7
• Parts included in K352418 Service Kit.
Replacement Gauges
PSI
Standard
Liquid Filled
0 - 60
P530154
–
0 - 160
P77413
H03276
H3 Sandwich Flow Control w/ Electrical Plug ..................... PS4235
H3 Sandwich Flow Control w/o Electrical Plug ................... PS4242
F7 Sandwich Flow Control w/ Electrical Plug ..................... PS3735
F7 Sandwich Flow Control w/o Electrical Plug ................... PS3742
A
C
10
11
2
3
4
5 6 7
B
1
8
9
For all Installation & Service Instructions, go to www.parker.com/pneumatic
