pb025nmdl4sm-rev1119
sandpiperpump
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com
14
• Model PB¼ Non-Metallic
Main Air Distribution Valve and Pilot Valve
1.2
1.1
1.1
1.4
1.4
1.3
1.5
6
28
4
11
1.4
26
3
17
28
5
15
10
21
27.1
27
26.1
1.3
1.5
Air Distribution Valve Servicing
See repair parts drawing, remove screws.
Step 1:
Remove end cap retainer (1.5).
Step 2:
Remove end cap (1.3).
Step 3:
Remove spool part of (1.1) (caution: do not scratch).
Step 4:
Press sleeve (1.1) from body (1.2).
Step 5:
Inspect O-Rings (1-4) and replace if necessary.
Step 6:
Lightly lubricate O-Rings (1-4) on sleeve (1.1).
Step 7:
Press sleeve (1.1) into body (1.2).
Step 8:
Reassemble in reverse order, starting with step 4.
Note: Sleeve and spool (1-1) set is match ground to a specified
clearance. Sleeve and spools (1-1) cannot be interchanged.
Pilot Valve Servicing
With Pilot Valve removed from pump.
Step 1:
Remove snap ring (21).
Step 2:
Remove sleeve (26), inspect O-Rings (26.1),
replace if required.
Step 3:
Remove spool (27) from sleeve (27.1),
inspect O-Rings (3E), replace if required.
Step 4:
Lightly lubricate O-Rings (26.1) and (27.1).
Reassemble in reverse order.
Main Air Valve Assembly Parts List
Item Part Number Description
Qty
1 031.107.551 Valve, Main Air
1
1.1 031.106.000 Sleeve and Spool Set (Includes O-Rings)
1
1.2 095.077.551 Body, Air Valve
1
1.3 165.074.551 Cap, End, Air Valve
2
1.4 560.101.360 O-Ring
8
1.5 675.051.115 Ring, Retaining
2
ATEX Compliant
IMPORTANT
Read these instructions completely, before installation
and start-up. It is the responsibility of the purchaser
to retain this manual for reference. Failure to comply
with the recommendations stated in this manual will
damage the pump, and void factory warranty.
Main Air Valve Assembly Parts List
Item Part Number Description
Qty
1 031.107.503 Valve, Main Air (Conductive Acetal)
1
1.1 031.106.000 Sleeve and Spool Set (Includes O-Rings)
1
1.2 095.077.503 Body, Air Valve
1
1.3 165.074.503 Cap, End, Air Valve
2
1.4 560.101.360 O-Ring
8
1.5 675.051.115 Ring, Retaining
2
Pilot Valve Assembly Parts List
Item Part Number Description
Qty
21 675.047.115 Ring, Retaining
1
26 755.038.000 Sleeve, Pilot Valve (Includes O-Ring)
1
26.1 560.066.360 O-Ring
6
27 775.038.000 Spool, Pilot Valve (Includes O-Ring)
1
27.1 560.029.374 O-Ring
6
4: AIR
END
