E-3
–
MODELS WITH RELIEF VALVES
CAUTION
ATTENTION
Optional built-in relief valve is intended for momentary protection of the pump against
overpressure. It is
Not
intended to be a pressure or flow control device. Continuous bypass of
pumped liquid through this valve will cause liquid to heat up very rapidly. Excessive temperature
rise will damage the pump.
The optional externally connected relief valve can be used as a pressure or flow control device if
its bypass line is piped back to fluid tank and not the pump inlet. Minimum and maximum relief
valve set pressures are 60 psid (4.1 Bar) and 255 psid (17.6 Bar) respectively.
DANGER
Relief valves are pre-set at factory. DO NOT TAMPER WITH RELIEF VALVE. Tampering with
relief valve will void pump warrantee and can cause bodily injury or loss of life. If relief valve
must be adjusted, return pump to factory.
F. PARTS LIST TABLE – TABLE 2
IDP QTY DESCRIPTION
IDP
QTY
DESCRIPTION
1 1
Housing
11
1
Ball Ring
2 1
Inlet
Cover 13
1
Key
3
0, 2 or 4 Bolt (See Note)
15
1
Retaining Ring
4 1
Inboard
Cover 16X
1
Seal
5
4
Bolt (Ext. RV)
19
1
Breakdown Bushing (Steel Pumps Only)
6
4,6 or 8 Bolt (See Note)
26X
1
O-Ring (-118 to -162)
7
1
Power Rotor
31X
1
O-Ring (See Note)
8 2
Idler
Rotor 47
2
Plug
10
1
O-Ring (Ext. RV)
95
1
Pin
X = Minor Repair Kit Item
Note:
IDP 3: Qty 4 on axial inlet versions of all pump sizes (95 through 162).
IDP 3: Qty 2 on all other versions of 95 size pumps.
IDP 3: Qty 0 on all other versions of sizes 118 through 162.
IDP 6: Qty 4 on axial inlet versions of all pump sizes (95 through –162).
IDP 6: Qty 6 on all other versions of 95 size pumps.
IDP 6: Qty 8 on all other versions of sizes 118 through 162.
IDP 31: Qty 2 on –95 pump.
G. INSPECTION
The Interval for inspection and replacement of worn parts varies with properties of pumped liquid and
can only be determined by experience. All internal parts of 3G Series pumps are lubricated by pumped
fluids. Pumping liquid which contains abrasive materials or liquid that is corrosive will significantly
reduce service life and call for shorter service intervals. A worn pump will be noticeable by excessive
vibration, noise, reduction in flow output and/or reduction in system pressure.
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