Aqua Environment Inc 873-1500 Operation And Maintenance Instruction - Page 2

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AQUA ENVIRONMENT CO. INC.
ASSEMBLY & DISASSEMBLY -
MODELS 873-1500 & 5000 REGULATOR
ITEM QTY
PART NO. DESCRIPTION
1
1
895
2
1
893
3
1
879
4
1
848
1
947
5
1
946-1
1
1035-1
6
1
849
7
1
903
8
1
410
9
1
378-2
10
1
379-30
11
2
379-37
12
1
379-38
13
1
379-5
14
1
876-15
1
876-29
15
1
876-15
16
1
876-28
17
1
876-116
18
1
919
1
920
19
1or2
952
20
979-xxxx REPAIR KIT - includes
1,4,5,14,15,16,17,18
NOTES
1. Technical bulletin - 874
895 poppet cartridge assy - drw 896
2. Use Dow silicone grease 111 or
equivalent on threads. Use Cristo-lub MCG
121 on seals. Use Slick 50 EP grease or
equivalent on bearings 11 and 12 and on
threads between items 7 and 9.
3. ASSEMBLY
a. Clean all parts and insure there are no
visible chips or particulates.
b. Inspect vent seat 5 under 10X
magnification at sealing edge. Wipe clean
as required.
c. Install cartridge 1 with seal 16 in
housing 2. Torque to 10 to 20 ft lbs.
d. Install seal 14 on piston 4. Pack heavily
with Cristo-lub MCG 121.
e. Carefully slide piston 4 into hsg 18 as
shown.
f. Install seal 15 and vent seat 5 into
piston as shown.
g. Install seal 16 as shown.
poppet assy
body
cap
piston for -5000
piston for -1500
vent seat (vented)
seat- not vented
spring guide
cap
spring guide
adjusting screw
knob
bearing plate
bearing
spring
seal (2-010 V90) -5000
seal (2-015 V90) -1500
seal (2-010) Vit. 90
seal (2-135 Vit. 90
seal (2-020) vit. 90
piston hsg -5000
piston hsg -1500
mount nut - optional
items
drw 875-1500&5000 pg 2 of 2
h. Screw cap 3 and body 2 together. Hold cap
3 downward so seat 5 does not fall out during
assembly. Torque to 20 to 40 ft lbs using a
strap wrench. Insure metal to metal contact
is made between body and piston housing. As
indicated by sudden increase of torque.
i. Install spring guide 8. then bearing plate
11, then bearing 12, then second bearing
plate 11, then spring 13, then spring guide 6
into cap as shown. Use ample Slick 50 EP
grease or equivalent on the bearings.
Silicone spray can be used to coat these parts
and act as a preservative.
j. Screw cap 7 onto cap 3. Hold cap 7
downward so parts stay in place during
assembly. Torque to about 20 ft lbs.
k. Install adjusting screw 9 and knob 10 as
shown using Slick 50 or EP grease.
4. model 873-xxxxNA denotes fixed
adjustment and uses a bolt and locking nut
instead of items 9 and 10.
5. model 873-xxxxNV denotes non vented
regulator.
10
11
12
VENT
13
7
14
6
18
15
16
4
3
17
2
inlet
9
8
7
6
4
5
3
2
outlet
1