Control Unit 9910-GH50

Control Unit 9910-GH50
Control Unit 9910-GH50
The Model 9910-GH50 Control Unit is designed for the control of pressure up to 725 psi and flows up to 51 gpm.
It consists of an adjustable pressure relief valve, pressure gauge, and a manual pressure release lever.
Pressure
Release Lever
Pressure
Gauge
Main
Bypass
Outlet
Pressure
Adjustment
Knob
Remote
Mounting
Bracket
Flange
Installation
Direct Mounting:
1. Remove the two Allen bolts (Ref. 23)* from the flange
(Ref. 24)* on the control unit. Retain the bolts for later.
Do not misplace the o-ring.
2. Locate the outlet elbow (Ref. 52)** on the top of the
discharge manifold of the pump.
3. Using thread sealant, attach the flange onto the outlet
elbow. Tighten the flange to the desired orientation.
4. Verify o-ring is in place on the flange. Place the control unit onto the flange in the desired orientation, and
replace and tighten the bolts previously removed in
step 1.
5. Connect the bypass hose to the bypass port hose
barb (Ref. 38)* and run it unrestricted back to the
tank.
6. Connect the desired amount of lines to the outlet port
hose barbs (Ref. 42)**. Unused ports can be shut off
with the ball valve, or they can be plugged.
*Refer to diagram on page 7.
** Refer to diagram on page 10 or 12.
Remote Mounting:
1. Remove the two Allen bolts (Ref. 23)* from the flange
on the control unit.
2. Position the mounting bracket (Ref. 66)* over the
flange in the desired position. Replace and secure
bolts.
3. With high pressure hose, connect the NPT flange on
the control unit to the NPT elbow at the top of the discharge manifold of the pump.
4. Connect the bypass hose to the bypass port hose
barb (Ref. 38)* and run it unrestricted back to the
tank.
5. Connect the desired amount of lines to the outlet port
hose barbs (Ref. 42)**. Unused ports can be shut off
with the ball valve, or they can be plugged.
NOTE: For all discharge connections, use hose rated
equal to or greater than the maximum pressure rating
Operation
1. Refer to the pump operation instructions for proper
operation of the pump.
2. The control unit can be put into full bypass mode by
lifting the pressure release lever into the up position.
3. With the pressure release lever in the down (pressure)
position, pressure can be controlled with the adjust-
ment knob at the end of the relief valve. Turning it
clockwise will increase the operating pressure and
turning it counterclockwise will decrease the pressure.
4. Flow can be controlled with the ball valves on each of
the outlet ports.
-6-
Parts List for Control Unit 9910-GH50
66
REF.
NO.
PART
NUMBER
23 9910-620610
24 9910-550394
25 9910-550350
31 9910-1880290
32 9910-130170
35 9910-280220
36 9910-130171
37 9910-550210
38 9910-550370
39 9910-550242
40 9910-390740
41 9910-680412
42 9910-680423
43 9910-680432
44 9910-680442
45 9910-680460
46 9910-680470
47 9910-680480
48 9910-680490
49 9910-680500
50 9910-680510
51 9910-680520
52 9910-680530
53 9910-680540
54 9910-680550
55 9910-680700
56 9910-680570
58 9910-660130
59 9910-180150
63 9910-680452
65 9910-320420
66 9910-1150590
* Order separately
DESCRIPTION
Bolt
Flange 3/4” G(F)
O-Ring
Pressure gauge
Pipe reducer
O-Ring
Plug
Hose barb (Optional)
Elbow (Standard)
Ring Nut
Diaphragm (Buna)
Valve body
Upper valve side
Discharge flange
Tension adj. support
Valve seat
Valve
Valve piston
Piston valve
Regulating spring
Spring guide
Lever guide
Pin
Pin
Pin
Bolt
Bolt
Control knob
Nut
Control lever
Spring
Remote mounting bracket*
QTY.
REQ’D
2
1
4
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
4
1
1
1
1
1
-7-
9910-KIT1936
Repair Kit
REF. NO.
QTY.
25
35
38
40
45
46
65
4
1
1
1
1
1
1
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