Check Valve Repair - VERDER VERDERAIR VA 25 Repair Parts

Check Valve Repair

NOTE: Kits are available for new check valve balls and
seats in a range of materials. See page 26 to order kits
in the material(s) desired. An o-ring kit and fastener kits
also are available.
NOTE: To ensure proper seating of the check balls,
always replace the seats when replacing the balls. Also,
on models with manifold o-rings, replace the o-rings.
Disassembly
1. Follow the Pressure Relief Procedure on page 9.
Disconnect all hoses.
2. Remove the pump from its mounting.
3. Use a 10 mm socket wrench to remove the outlet
manifold fasteners (6). See F
NOTE: For plastic pumps
VA25(HE)PP, and VA25(HE)KP), use hand tools only
until thread-locking adhesive patch releases.
4. Remove the o-rings (12, not used on some models),
seats (10), and balls (11).
5. Turn the pump over and remove the inlet manifold.
Remove the o-rings (12, not used on some models),
seats (10), and balls (11).
Reassembly
1. Clean all parts and inspect for wear or damage.
Replace parts as needed.
2. Reassemble in the reverse order, following all notes
in F . 6. Be sure the ball checks (10-12) and mani-
IG
folds (4, 5) are assembled exactly as shown. The
arrows (A) on the fluid covers must point toward the
outlet manifold (4).
12 859.0089
. 6.
IG
(VA25(HE)CC,
1
Torque to 90 in-lb (10.2 N•m). See Torque Instructions,
page 16.
2
Arrow (A) must point toward outlet manifold.
3
Not used on some models.
Aluminum pump
shown
5
1
6
F . 6. Ball check valve assembly
IG
6 1
4
11
3
12
10
3
12
3
2
A
7
11
12 3
10
12
3
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